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((short description|Class of Australian passenger cars))
((Use dmy dates|date=November 2019))
((Infobox train
| background = 
| name = Z type carriage
| image = BZN271.jpg
| imagesize = 300px
| imagealt = 
| caption = Carriage BZN271
| interiorimage = Z-car-interior.jpg
| interiorimagealt = 
| interiorcaption = Interior of a first class ACZ carriage
| service = 1957–2006 (As Z sets), now used with [[N type carriage|N sets]] to provide additional capacity.
| manufacturer = [[Victorian Railways]]
| ordernumber = 
| factory = [[Newport Workshops]]
| family = 
| replaced = 
| yearconstruction = 1957–1966
| yearservice = 1957
| refurbishment = 1983-1995 (conversions to ACZ and general reconditioning); 1998-2013 refurbished to [[N type carriage|BZN/BTN]] style carriages; refurbished again from 2008-2016.
| yearscrapped = 
| numberconstruction = 
| numberbuilt = 
| numberservice = 
| numberpreserved = 
| numberscrapped = 
| formation = Additional cars for [[N type carriage|N sets]]
| diagram = 
| code = 
| fleetnumbers = 
| capacity = 
| operator = [[V/Line]], [[Heritage railway|various heritage operators]]
| depots = 
| lines = 
| carbody = Steel
| carlength = ((convert|71|ft|6|in|m|2|abbr=on)) over body, ((convert|74|ft|8|in|m|2|abbr=on)) over coupling points (Sitting cars)<br />
((convert|75|ft|m|2|abbr=on)) over body, ((convert|78|ft|2|in|m|2|abbr=on)) over coupling points (VAM1/SZ287)
| width = ((convert|9|ft|9|in|m|2|abbr=on)), ((convert|10|ft|1+15/16|in|m|2|abbr=on)) over handrails (AZ, ACZ, BCZ, BZ, BZS, BZN & BTN), ((convert|10|ft|5/8|in|m|2|abbr=on)) over handrails (VBK & VFK)
| height = ((convert|13|ft|2+11/16|in|m|2|abbr=on)) (AZ, ACZ, BCZ, BZ, BZS, BZN & BTN), ((convert|13|ft|4+5/8|in|m|2|abbr=on)) (VBK & VFK)
| floorheight = 
| platformheight = 
| entrylevelorstep = 
| doors = Manual swing, 2 per side, since upgraded to power-closing
| art-sections = [[Gangway connection|Rubber corridor connectors]]
| wheeldiameter = 
| wheelbase = 
| maxspeed = ((convert|70|mph|km/h|0|abbr=on))
| weight = 
| axleload = 
| aux = 
| powersupply = Originally axle-mounted generators, now [[head-end power]]
| hvac = 
| bogies = 
| brakes = 
| coupling = Autocouplers
| light = 
| gauge = ((RailGauge|5ft3in|lk=on)),<br /> has operated on ((RailGauge|4ft8.5in|allk=on))
| notes = 
))((Unsourced|section|date=April 2024))
The '''Z type carriages''' are an [[air conditioned]] steel [[Passenger car (rail)|passenger carriage]] used on the [[Rail transport in Victoria|railways of Victoria]], [[Australia]]. The carriages were constructed by the [[Victorian Railways]] from 1957 for use on interstate services.((Citation needed|date=April 2024))

Two major types of carriage were constructed - thirteen AZ first class cars with closely spaced but smaller windows, and twelve BZ second class cars with wider spaced but larger windows (the thirteenth BZ entered service on standard gauge). Carriages were provided with a saloon layout, with 2+2 reversible seating provided, with each row lining up with the windows. First class was provided with more legroom than second. An internal partition existed between the two ends of the saloon, but was removed in later years. A single [[twinette]] sleeping car was also built in a Z type body shell, entering service in 1963; it had 20 berths.((Citation needed|date=April 2024))

A number of carriages were placed onto [[standard gauge]] [[bogies]] from 1962 for use on interstate trains such as the ''[[Spirit of Progress]]''. With the end of these trains in the 1980s they were placed back onto the broad gauge. During this time a number of AZ type carriages were provided with conductors work stations / compartments and recoded to ACZ at this time.

The Z type cars were made redundant by the early 1990s with the introduction of the [[V/Line Sprinter|Sprinter]] railcars, most Z Sets were broken up, with the formation of [[West Coast Railway (Victoria)|West Coast Railway]] effective Sunday 19 September 1993 to run Melbourne ~ Geelong ~ Warrnambool Passenger Rail Services under contract to the Victorian Governments Dept. of Transport, Carriages: ACZ's: 252, 255, 257 & BZ's: 267, 269, 270 were obtained by [[West Coast Railway (Victoria)|West Coast Railway]]. After the demise of WCR, [[V/Line]] reacquired ACZ 252, ACZ 257 & BZ267, with preservation groups such as [[R707 Operations]] acquiring ACZ 255 & BZ 270 & [[Steamrail Victoria]] acquiring BZ 269.((Citation needed|date=April 2024))

The cars still with [[V/Line]] were refurbished from 1995, being provided with 2+3 seating in the [[N type carriage]] style, with some carriages also receiving wider doors and toilets with wheelchair access. Today only a handful of Z type carriages remain in unaltered form, these being ACZ255 & BZ270 with [[R707 Operations]].

[[V/Line]] maintains ACZ 257 (now reclassed as  BCZ 257 ~ an economy class carriage, with the WCR 2001-era upgraded conductors work station / compartment) now reversed to be at the West End, while still maintaining its Z type interior as modified & refurbished by WCR in there DDA-compliance upgrade of 2001. 

(As part of these upgrades for DDA-Complience by WCR: ACZ's 252 & 257 were permanently turned, with the old east end {that once formerly housed the 1980s-era fitted larger conductors work station / compartments} being subsequently removed & replaced with a DDA-complement disabled toilet, similar to that fitted to [[V/Line]] BZN Carriages, this was hence renamed the new west end of the carriage. The old west end, that once housed the former toilet and washroom compartments divided by the central aisle & saloon entry} was subsequently removed & replaced with a new smaller conductors work station/compartment and hence renamed the new east end of the carriage.)

The remaining Z type carriages in the [[V/Line]] fleet were temporarily removed from service in January 2013 due to cracking occurring in the [[bogie#Railway|bogie]]s.<ref>((cite press release|title=V/Line to remove Z carriages for inspection|url=http://www.vline.com.au/about/news/mediareleases/1350753462/Article.aspx|access-date=2013-05-26|date=2013-01-30|publisher=[[V/Line]]))</ref> The carriages have gradually been returned to service, and as at mid December 2016, only BTN253, BTN254, BZN258, BZN262 and BTN268 were out of service.

==History==
((Empty section|date=September 2016))

==Services==
For much of their life, the Z cars operated as Z sets, however, in the early 1990s most sets were broken up, with carriages merged into [[VicRail N type carriage|N sets]]. They thus currently run on services mixed with Z sets. Until 2010, there was one set still branded as a Z set, set SZ7, however, this set was actually mostly made up of [[Victorian Railways S type carriage|S cars]]. 

The Z type cars currently run on long-distance services to [[Bairnsdale railway station|Bairnsdale]], [[Swan Hill railway station|Swan Hill]] and [[Warrnambool railway station|Warrnambool]], as well as some interurban services. In the past, they also operated on other long-distance and interurban runs. 

With the introduction of more [[V/Line VLocity|V/locity]] trains, the Z cars will be withdrawn from all remaining services, except for Swan Hill, where it is unknown when locomotive-hauled trains will be replaced.<ref>((cite press release|title=Warrnambool Line Upgrade|url=https://bigbuild.vic.gov.au/projects/warrnambool-line-upgrade|access-date=2021-11-12|date=|publisher=Big Build))</ref>

==Design==
The new carriages were essentially a saloon version of the earlier [[S type carriage|S-car]] design, using the most modern amendments to that plan and adjusted for a saloon interior rather than compartments. Each carriage has a body length of 71ft 6in, with diaphragms either end extending to 75ft when loose, compressing by 2in per end when coupled. The shell is 13ft 2¹¹⁄₁₆in from rail height when loaded, and 9ft 9in wide plus external handrails. Couplers are 2ft 11in above rail height on flat track, and the bogies are spaced at 53ft centres, and 9ft 3in from the ends of the body. Axles are spaced 8ft apart within the bogies, and the wheels are 3ft 0¼in diameter.<ref>((Cite web |title=as858 |url=http://pjv101.net/fts/u01/as858.gif |website=pjv101.net))</ref><ref>((Cite web |title=as860 |url=http://pjv101.net/fts/u01/as860.gif |website=pjv101.net))</ref><ref>((Cite web |title=as864 |url=http://pjv101.net/fts/u01/as864.gif |website=pjv101.net))</ref>

The first S and O/J type carriages were designed with full-width diaphragms in mind, using steel plates to give the impression of a single-unit train. 1AZ had curved ends reminiscent of this outline, while 2AZ, 1BZ and 2BZ had flat ends.<ref name="victorianrailways.net">((Cite web |title=AZ passenger cars |url=http://www.victorianrailways.net/pass%20cars/pass%20car%20pages/az/az.html |access-date=2024-04-01 |website=www.victorianrailways.net))</ref><ref name="ReferenceA">((Cite web |title=BZ |url=http://www.victorianrailways.net/pass%20cars/pass%20car%20pages/bz.html |access-date=2024-04-01 |website=www.victorianrailways.net))</ref> The remainder of the class was built with chamfered edges to the body, and all units had exposed rubber diaphragms fitted from new. The walkway through the diaphragms is 2ft 4in wide. Externally the only difference between the first and second class carriages, other than markings indicating as such, was the number and size of windows. Both types had two small windows, one either end per side, for the washroom and toilet. Between those, first class cars had a set of five then a set of seven short windows, while second class cars have three then five longer windows; the gap between window 3 and window 4 is hardly noticeable compared to the gap between 5 and 6 on the first class carriages.

Additionally, the first three vehicles of each class featured a line of rivets along the carriage frame.<ref name="victorianrailways.net"/><ref name="ReferenceA"/> These are thought to be present because those carriage frames had originally been earmarked for future S type carriage builds.((Citation needed|date=April 2024))

===Plumbing===
The earlier cars in each set had a single tank for 140 gallons of cold water, and small air-intake panels either side of the end-of-carriage diaphragms. Later cars had two, much larger air intakes on one side only of each diaphragm, and tanks for 280 gallons of cold water; and in some cases an additional tank for 20 gallons of hot water.((Citation needed|date=April 2024))

===Electrical Systems===
All the broad gauge cars except AZ2, BZ1 and BZ2 were powered via Hypoid motor-generator sets, with a gear ratio of 3.47:1 generating 17&nbsp;kW. The remaining three cars used an alternative system with a 2:57 gear ratio, driving a separate generator set to provide the same 17&nbsp;kW. The standard gauge cars were only powered by an external supply of 3-phase 415 VAC at 50&nbsp;Hz.<ref>((Cite web |title=as865 |url=http://pjv101.net/fts/u01/as865.gif |website=pjv101.net))</ref> When AZ3 and BZ3 operated on standard gauge they could be powered by their Hypoid systems, or if that was disconnected they could also use the head-end power of the train consist. Some cars were fitted with batteries for emergency power supply - 1VBK and 2VBK had 120 V batteries each, and 1VAM had a bank of batteries providing 48 V.<ref>((Cite web |title=as671 |url=http://www.pjv101.net/fts/u01/as671.gif |website=www.pjv101.net))</ref>

Air conditioning was built into the roof of the cars, with fresh air ducts either end of the cars and the distribution ducting formed by the ceiling design. Each car was also fitted with a heating system; between the air and in-floor heaters the total load was between 9000 to 10,500W depending on the car.

==Details==
===Sitting cars AZ, BZ & BZS, VBK & VFK===
((Infobox train
| background       = 
| name             = AZ, VBK
| image            = 
| imagesize        = 
| imagealt         = 
| caption          = 
| interiorimage    = 
| interiorimagealt = 
| interiorcaption  = 
| service          = 
| manufacturer     = [[Victorian Railways]]
| factory          = [[Newport Workshops]]
| family           = Z type
| replaced         = 
| yearconstruction = 1956-1959
| yearservice      = 
| refurbishment    = 
| yearscrapped     = 
| numberconstruction= 
| numberbuilt      = 13
| numberservice    = 
| numberpreserved  = 
| numberscrapped   = 
| formation        = 
| fleetnumbers     = 1-13AZ, later 263AZ; 1-5, later 259-261 & 263VBK (4VBK went straight to ACZ262).
| capacity         = 48 1st class passengers, increased to 56 between 1966-1970.
| operator         = [[Victorian Railways]]
| depots           = 
| lines            = 
| carbody          = Steel
| carlength        = ((convert|71|ft|6|in|m|2|abbr=on)) over body, ((convert|74|ft|8|in|m|2|abbr=on)) over coupling points
| width            = ((convert|9|ft|9|in|m|2|abbr=on)), ((convert|10|ft|1+15/16|in|m|2|abbr=on)) over handrails (AZ), ((convert|10|ft|5/8|in|m|2|abbr=on)) over handrails (VBK)
| height           = ((convert|13|ft|2+11/16|in|m|2|abbr=on)) (AZ), ((convert|13|ft|4+5/8|in|m|2|abbr=on)) (VBK)
| floorheight      = 
| platformheight   = 
| entrylevelorstep = 
| doors            = 
| art-sections     = 
| maxspeed         = 
| weight           = ((convert|48|lt|14|Lcwt|0|qtr|t|2|abbr=on)) (AZ), ((convert|43|lt|9|Lcwt|0|qtr|t|2|abbr=on)) (VBK)
| aux              = 
| powersupply      = Axle-mounted generators (AZ); head-end power (VBK)
| hvac             = 
| bogies           = ((convert|53|ft|m|2|abbr=on)) centres
| brakes           = Westinghouse
| coupling         = Autocouplers
| gauge            = ((Track gauge|5ft3in|lk=on)) & ((Track gauge|4ft8.5in|lk=on)) 
))
((Infobox train
| background       = 
| name             = BZ, VFK, BZS
| image            = 
| imagesize        = 
| imagealt         = 
| caption          = 
| interiorimage    = 
| interiorimagealt = 
| interiorcaption  = 
| service          = 
| manufacturer     = [[Victorian Railways]]
| factory          = [[Newport Workshops]]
| family           = Z type
| replaced         = 
| yearconstruction = 1957-1960
| yearservice      = 
| refurbishment    = 
| yearscrapped     = 
| numberconstruction= 
| numberbuilt      = 13
| numberservice    = 
| numberpreserved  = 2
| numberscrapped   = 
| formation        = 
| fleetnumbers     = 1-12BZ, 1-6VFK, 271-276VFK, 271-276BZS
| capacity         = 64 2nd class passengers, later 68 (BZ only, not VFK or BZS)
| operator         = [[Victorian Railways]]
| depots           = 
| lines            = 
| carbody          = ((convert|71|ft|6|in|m|2|abbr=on))
| carlength        = ((convert|74|ft|8|in|m|2|abbr=on))
| width            = ((convert|9|ft|9|in|m|2|abbr=on)), ((convert|10|ft|1+15/16|in|m|2|abbr=on)) over handrails (BZ & BZS), ((convert|10|ft|5/8|in|m|2|abbr=on)) over handrails (VFK)
| height           = ((convert|13|ft|2+11/16|in|m|2|abbr=on)) (BZ & BZS), ((convert|13|ft|4+5/8|in|m|2|abbr=on)) (VFK)
| floorheight      = 
| platformheight   = 
| entrylevelorstep = 
| doors            = 
| art-sections     = 
| maxspeed         = 
| weight           = ((convert|48|lt|15|Lcwt|0|qtr|t|2|abbr=on)) (BZ & BZS), ((convert|43|lt|19|Lcwt|0|qtr|t|2|abbr=on)) (VFK)
| aux              = 
| powersupply      = Axle-mounted generators (BZ); head-end power (VFK & BZS)
| hvac             = 
| bogies           = ((convert|53|ft|m|2|abbr=on)) centres
| brakes           = Westinghouse
| coupling         = Autocouplers
| gauge            = ((Track gauge|5ft3in|lk=on)) & ((Track gauge|4ft8.5in|lk=on)) 
))

When entering the carriage from a platform, passengers first walk through the vestibule area with swing doors to adjacent carriages through diaphragms. On the opposite side there are three doors; facing the centre of the carriage, the left is for the washroom, the centre to the saloon area and the right to the toilet.((Citation needed|date=April 2024)) The men's washroom includes a power outlet supplying 230vAC. The main saloon compartment was originally divided into two sections, with a partition between. The end adjacent to the men's toilets was for smoking passengers and called the No.1 End, while the end adjacent to the ladies' toilet was for non-smoking passengers and called the No.2 End. All seat pairs were 3ft 8in over armrests and could rotate and recline with footrests provided; and reading lights were provided at least on the first class standard gauge cars. The centre aisle is around 1ft 7½in wide, and illuminated with fluorescent lights. A public address system is fitted for announcements.((Citation needed|date=April 2024))

First class carriages were fitted with one pair of seats per window, to give 20 seats in the No.1/smoking end and 28 in the No.2/non-smoking end; spacing was a little over 4ft.

Second class carriages were similar, but with six rows of four seats in the No.1/smoking end behind three windows, and ten rows of four seats in the No.2/non-smoking end behind five windows. Total capacity was 64.

The first two cars of each class were fitted with timber veneer panels internally. Cars AZ3 and BZ3 were modified to allow quick conversion to standard gauge if needed, and to match most of the stock on the Sydney run they were fitted with laminex interiors in lieu. Later cars repeated this alteration.((Citation needed|date=April 2024))

From the mid 1960s the cars on broad gauge had their layouts modified; the first class carriage seats were respaced drastically to give 56 seats - 24 in the No.1/smoking end and 32 in the No.2/non-smoking end, with spacing reduced to about 3ft 10in. The changes to the second class cars were far more minor, as the change from 64 to 68 seats only required one additional row of seats in line with the smoking/non-smoking partition, which was modified to suit. When these modifications were completed, the tare weight of the cars increased to 48t 14c 1Q 0L. The change occurred later on the standard gauge carriages, some not gaining the extra seats until the mid 1990s when they were returned to broad gauge. Smoking was banned on all trains in Victoria in June 2006.<ref>((Cite web |title=Smoke-free Environment |url=https://www.tobaccoinaustralia.org.au/chapter-15-smokefree-environment/15-7-legislation#_ednref122 |website=www.tobaccoinaustralia.org.au))</ref>

From the 1980s the cars were gradually converted and upgraded to suit the requirements of the [[New Deal (railway)|New Deal]], and the fleet was renumbered as part of that project to match the new reservations and rolling stock management systems. Cars 1-8AZ took on numbers 251-258; cars VBK1-5 became 262, 260, 261, 259 and 263 respectively; cars 1-7BZ were renumbered 264-270, and cars 1-6VFK changed to 271-276. Most cars were modified and some reclassified during the upgrade process, with 1-8AZ, for example, becoming ACZ. VBK263 spent nearly a year operating on the broad gauge system as AZ263 before its conductor compartment was fitted.

When the six standard gauge VFK cars were converted to broad gauge in the 1990s, they were given the code BZS to indicate that they were ex-Standard Gauge, with 64 seats matching the capacity of a typical [[S type carriage|BS]] steel carriage. Cars 271 and 275 were the first to transfer across, in 1990, and the other four were shifted in 1992 in preparation for the replacement of the Melbourne/Sydney Express with an XPT consist. Between 1995-1997 these six cars were refitted internally, with a larger door at one end and seats respaced, to provide sitting for 76 passengers and a parking space for one wheelchair. The new format was called BZN, and the cars were allocated to [[N type carriage|N sets]].

Of the seven BZ carriages, three were sold to West Coast Railway in 1995 for use on their Warrnambool route - 267, 269 and 270. The remaining four - 264, 265, 266 and 268 - were retained by V/Line Passenger. In 1996 BZ265 was converted to the BZN format, matching the changes applied to the six ex-standard gauge carriages; BZ266 followed in 1998. In 1999 the other two were modified to a different format, known as BTN. This had been applied to BCZ263 in the previous year, and used the carriage shell with a new interior identical to that of the [[N type carriage|BN cars]], with 88 seats in a 2+3 format and no special functions. When West Coast Railway's stock was sold off in 2004, V/Line re-acquired BZ267, and in 2007 it was also converted to the BZN format. BZ269 and BZ270 were passed to heritage societies, Steamrail Victoria and 707 Operations (with ACZ255) respectively. BZ270 has been repainted in 707's livery of red with silver, but otherwise is largely unchanged since the extra four seats were added. BZ269 was stripped by Steamrail, renumbered BZ6 and named Hobsons Bay, and now operates as a function car with a bar serving drinks, but otherwise a large open space with no seating provided.

===ACZ 1st Class & Conductor cars===
((Infobox train
| background       = 
| name             = ACZ, BCZ
| image            = File:Vline-bcz257-carriage.jpg
| imagesize        = 300px
| imagealt         = 
| caption          = ACZ carriage before refurbishment
| interiorimage    = 
| interiorimagealt = 
| interiorcaption  = 
| service          = 
| manufacturer     = [[Victorian Railways]]
| factory          = [[Newport Workshops]]
| family           = Z type
| replaced         = 
| yearconstruction = 1984-1985
| yearservice      = 
| refurbishment    = 
| yearscrapped     = 
| numberconstruction= 
| numberbuilt      = 13
| numberservice    = 
| numberpreserved  = 1 (ACZ255 with 707 Operations)
| numberscrapped   = 
| formation        = 
| fleetnumbers     = 
| capacity         = 52 1st class passengers and a small guard/conductor's compartment. Some later 48 seats.
| operator         = [[Victorian Railways]]
| depots           = 
| lines            = 
| carbody          = Steel
| carlength        = ((convert|71|ft|6|in|m|2|abbr=on)) over body, ((convert|74|ft|8|in|m|2|abbr=on)) over coupling points
| width            = ((convert|9|ft|9|in|m|2|abbr=on)), ((convert|10|ft|1+15/16|in|m|2|abbr=on)) over handrails
| height           = ((convert|13|ft|2+11/16|in|m|2|abbr=on))
| floorheight      = 
| platformheight   = 
| entrylevelorstep = 
| doors            = 
| art-sections     = 
| maxspeed         = 
| weight           = ((convert|47|lt|2|Lcwt|0|qtr|t|2|abbr=on))
| aux              = 
| powersupply      = Head-end power
| hvac             = 
| bogies           = ((convert|53|ft|m|2|abbr=on)) centres
| brakes           = Westinghouse
| coupling         = Autocouplers
| gauge            = ((Track gauge|5ft3in|lk=on))
))

Following the introduction of the [[New Deal (railway)|New Deal]] from 1981, the Z fleet carriages were modified and upgraded to suit the new timetable requirements. The fleet was mixed with the [[S type carriage]] group, and the cars were formed into three, four or five carriage sets for long-distance running. Each set used an ACZ car at what would be the southern/eastern end at Spencer Street Station, in lieu of the earlier practice of vans both ends or shifting the independent guard's van to the opposite end of the train at the end of each run. This allowed much faster turnarounds at termini. Initially, eight ACZ cars were converted from 1AZ through 8AZ, completed by the end of 1985 at Bendigo Workshops for around $57,800 each.<ref>Newsrail June 1982 p.113</ref>

Two further cars were transferred from the standard gauge fleet in 1986, to provide ten ACZ-BRS sets to mix with BZ and BS economy sitting cars. A typical regional consist at the time would have been BS-BZ-BRS-ACZ, plus or minus a BS car depending on requirements. The final three standard gauge VBK cars were converted to broad gauge ACZ in 1990-1991, though all had been renumbered to match the New Deal system by 1987.

The modified ACZ cars had the toilets and four seats removed from the east end, and that space was utilised as the new guard's compartment to match that provided in the new [[N type carriage|ACN]] cars. This reduced their sitting capacity from 56 to 52 passengers, with the expectation that most luggage would be stored in an attached luggage van of the [[Victorian Railways box vans#D, DH, DN and DT Parcel Vans (1983-1986)|D series]]. Periscopes were fitted to allow guards to check signals, but as the guards were phased out the small compartment was handed over to conductors as an office area, and the periscopes were removed.

Introduction of the Sprinter fleet from 1993 rendered some of the regional loco-hauled carriage sets obsolete, so the vehicles were withdrawn and stored, typically at Ballarat or Bendigo workshops; and three (252, 255, 257) were sold to West Coast Railway when that company gained operational accreditation. ACZ260 was supposed to be included in the sale but was damaged a few days before the handover; it had been stored at Newport Workshops for 22 years, before rebuilt by V/line in 2017-18 to become a power van for the [[Albury V/Line rail service|Albury]] standard gauge service.

As patronage increased approaching the new millennium they were gradually called back into service, and converted to provide additional Economy seating capacity. In 1995-1996, cars 251, 253, 254, 258, 261 and 263 were all returned to service, reclassed BCZ for economy passengers. Many of these were rotated and attached to the west end of existing sets, rather than reforming their previous consists, to provide a temporary facility for wheelchair storage following passage of the Disability Discrimination Act in 1992. ACZ cars 259 and 262 were retained in service as loose 1st class carriages, for attaching to special consists as required; and ACZ256 was stored at Bendigo pending restoration and conversion to BCZ when the funding for the program ran out, so it was stored indefinitely. It was finally completed and re-entered service in 2000, following damage to some of the Sprinter vehicles and a jump in patronage.

In 2003 cars 251, 253 and 254 were converted to the new BTN format, with 88 seats arranged in 2+3, matching the capacity of the BN sitting carriages; and 256, 258 and 261 were converted to BZN, a modification of the BCZ arrangement with 76 economy seats in lieu of 52 1st class seats. The six cars were paired, then attached to three [[N type carriage]] sets. That left ACZ259, ACZ262 and BCZ263 with V/Line Passenger. When West Coast Railway folded in 2004, V/Line re-purchased cars ACZ252 and ACZ257. In 2006-2007, ACZ257, ACZ259 and ACZ262 were reclassed BCZ (to go with BCZ263), though no internal changes were applied at the time, and ACZ252 was converted to BZN252. BCZ262 was converted to the BZN format in 2008,<ref>((Cite web |title=railpage |url=http://railpage.com.au:443/f-p1111899.htm#1111899 |website=railpage.com.au))</ref> and BCZ259 to BTN259 followed in 2013,<ref>((cite web|url=https://www.railpage.com.au/f-p1882895.htm#1882895|title=New Car Set FN3 and other V/Line fleet changes|website=Railpage|access-date=11 January 2019))</ref> leaving only BCZ257; this vehicle was used to form set Z57 when additional capacity was required on the Geelong line, and in more recent times it has been utilised as a secondary luggage storage area, attached to one of the regular N sets, often rostered to run to Swan Hill where the reduced capacity is manageable, and the increased comfort appreciated.

===BZN & BTN conversions===
((Infobox train
| background       = 
| name             = BTN
| image            = 
| imagesize        = 
| imagealt         = 
| caption          = 
| interiorimage    = 
| interiorimagealt = 
| interiorcaption  = 
| service          = 
| manufacturer     = 
| factory          = 
| family           = Z type
| replaced         = 
| yearconstruction = 1998-2003
| yearservice      = 
| refurbishment    = 
| yearscrapped     = 
| numberconstruction= 
| numberbuilt      = 6
| numberservice    = 
| numberpreserved  = 
| numberscrapped   = 
| formation        = 
| fleetnumbers     = 251, 253, 254 & 263 (ex AZ/ACZ/VBK); 264, 268 (ex BZ)
| capacity         = 88 Economy passengers
| operator         = 
| depots           = 
| lines            = 
| carbody          = Steel
| carlength        = ((convert|71|ft|6|in|m|2|abbr=on)) over body, ((convert|74|ft|8|in|m|2|abbr=on)) over coupling points
| width            = ((convert|9|ft|9|in|m|2|abbr=on)), ((convert|10|ft|1+15/16|in|m|2|abbr=on)) over handrails
| height           = ((convert|13|ft|2+11/16|in|m|2|abbr=on))
| floorheight      = 
| platformheight   = 
| entrylevelorstep = 
| doors            = 
| art-sections     = 
| maxspeed         = 
| weight           = 50 tonnes
| aux              = 
| powersupply      = Head-end power
| hvac             = 
| bogies           = ((convert|53|ft|m|2|abbr=on)) centres
| brakes           = Westinghouse
| coupling         = Autocouplers
| gauge            = ((Track gauge|5ft3in|lk=on))
))
((Infobox train
| background       = 
| name             = BZN
| image            = 
| imagesize        = 
| imagealt         = 
| caption          = 
| interiorimage    = 
| interiorimagealt = 
| interiorcaption  = 
| service          = 
| manufacturer     = 
| factory          = 
| family           = Z type
| replaced         = 
| yearconstruction = 1995-2013
| yearservice      = 
| refurbishment    = 
| yearscrapped     = 
| numberconstruction= 
| numberbuilt      = 15
| numberservice    = 
| numberpreserved  = 
| numberscrapped   = 
| formation        = 
| fleetnumbers     = 252, 256-258, 261-262 (ex ACZ), 265-267 (ex BZ), 271-276 (ex BZS)
| capacity         = 76 Economy passengers & 1 wheelchair parking spot
| operator         = 
| depots           = 
| lines            = 
| carbody          = Steel
| carlength        = ((convert|71|ft|6|in|m|2|abbr=on)) over body, ((convert|74|ft|8|in|m|2|abbr=on)) over coupling points
| width            = ((convert|9|ft|9|in|m|2|abbr=on)), ((convert|10|ft|1+15/16|in|m|2|abbr=on)) over handrails
| height           = ((convert|13|ft|2+11/16|in|m|2|abbr=on))
| floorheight      = 
| platformheight   = 
| entrylevelorstep = 
| doors            = 
| art-sections     = 
| maxspeed         = 
| weight           = 50 tonnes
| aux              = 
| powersupply      = Head-end power
| hvac             = 
| bogies           = ((convert|53|ft|m|2|abbr=on)) centres
| brakes           = Westinghouse
| coupling         = Autocouplers
| gauge            = ((Track gauge|5ft3in|lk=on))
))

The Z sets were gradually dissolved from the mid-1990s, and the cars reallocated to N carriage sets. From 1995-1998 eight cars were converted to BZN, with some seats removed and a wider doorway fitted to make the cars wheelchair-accessible; and in 1998-1999 a further three cars were converted to a more dense seating arrangement, with 88 seats provided in the same layout as the BN carriages. A further three cars of each type were created in 2003, followed by 252 and 267 to BZN in 2007, 262 in 2008 and 259 in 2013.

===Composite Sleeping Car===
<onlyinclude>((Infobox train
| background       = 
| name             = SZ, VAM
| image            = 
| imagesize        = 
| imagealt         = 
| caption          = 
| interiorimage    = 
| interiorimagealt = 
| interiorcaption  = 
| service          = 
| manufacturer     = [[Victorian Railways]]
| factory          = [[Newport Workshops]]
| family           = Z type
| replaced         = 
| yearconstruction = 1963
| yearservice      = 
| refurbishment    = 
| yearscrapped     = 
| numberconstruction= 
| numberbuilt      = 1
| numberservice    = 
| numberpreserved  = 
| numberscrapped   = 
| formation        = 
| fleetnumbers     = 1VAM, later SZ287
| capacity         = 20 sleeping passengers or 12 sleeping, 6 first and 8 second class passengers
| operator         = [[Victorian Railways]] (formerly), [[Seymour Railway Heritage Centre]] (current)
| depots           = 
| lines            = 
| carbody          = Steel
| carlength        = ((convert|75|ft|m|2|abbr=on)) over body, ((convert|78|ft|2|in|m|2|abbr=on)) over coupling points
| width            = ((convert|9|ft|10+9/16|in|m|2|abbr=on))
| height           = ((convert|13|ft|6+11/16|in|m|2|abbr=on))
| floorheight      = 
| platformheight   = 
| entrylevelorstep = 
| doors            = 
| art-sections     = 
| maxspeed         = 
| weight           = ((convert|51|lt|13|Lcwt|0|qtr|t|2|abbr=on))
| aux              = 
| powersupply      = Head-end power
| hvac             = 
| bogies           = ((convert|53|ft|m|2|abbr=on)) centres
| brakes           = Westinghouse
| coupling         = Autocouplers
| gauge            = ((Track gauge|5ft3in|lk=on)) & ((Track gauge|4ft8.5in|lk=on)) 
))
The composite sitting/sleeping car, VAM1, was built with 10 evenly-spaced windows per side, plus a closer window and a door at the No.2 end. Access to the car was via the doors at the No.2 end, or via coupled carriages and the diaphragms linking them to VAM1. The ten windows each represented a single compartment. The first and second compartments at the No.1 end were fitted with bench seats for four people each, while the other eight compartments were fitted with three-person seats divisible with retractable armrests. All seats could fold down to form a bed, and above that was a second bed, giving capacity for up to 20 sleeping passengers or up to 24 first-class and 8 second-class passengers. Generally speaking only the first four compartments at the No.1 end were used for sitting passengers, and the remaining six were used exclusively for sleeping passengers. Partially because of this, the public address system was only wired to the four compartments at the No.1 end, and not the other six. Each compartment also had its own cupboard, shower, toilet, card table and wardrobe. The interior was sheathed with laminex panels.<ref>((Cite web |title=as481 |url=http://www.pjv101.net/fts/u01/as481.gif |website=www.pjv101.net))</ref>

At the No.2 end a small curtained-off area was reserved for the carriage conductor, with a seat to work at. Weight of the car was 51 tons 13 cwt. Water capacity was 280 gallons of cold water, plus 75 gallons of hot water for the showers. The car was fitted with marker lights, backup lamp brackets and tail discs at both ends, allowing it to trail any train. Notably, even though the car would only normally trail trains in New South Wales, the end-of-train marker was a Victorian Railways disc rather than a New South Wales Railways triangle.</onlyinclude>

The car now is under the care of [[Seymour Railway Heritage Centre]] and was restored to service in 2016.

===PZ Power Van===
ACZ260 has been modified and reclassed as power van PZ260, as of 17-Jan-2018.<ref>((cite web|url=https://railgallery.wongm.com/vline-workshops-yards/F123_3266.jpg.html|title=Newly converted power van PZ260 fresh out of Newport Workshops|first1=Marcus|last1=Wong|website=Wongm's Rail Gallery|access-date=11 January 2019))</ref> It was converted to standard gauge for use on the Albury line, then in 2022 the carriage was transferred to the [[Seymour Railway Heritage Centre]] and reclassified 10PZ, in line with its pre-New Deal identity of 10AZ

==In Service==
===Individual cars===
====Sitting cars====
Initially, AZ and BZ cars were allocated to long-distance passenger trains in Victoria. Cars would be attached to ''[[The Vinelander]]'' for [[Mildura railway station|Mildura]], ''[[The Gippslander]]'' to [[Bairnsdale railway station|Bairnsdale]], the ''Great Northern'' to [[Swan Hill railway station|Swan Hill]] and also to [[Albury railway station|Albury]]. If additional cars were available after that, they would be allocated to [[Horsham railway station, Victoria|Horsham]] and/or [[Dimboola railway station|Dimboola]] runs, which may have displaced an [[S type carriage]] or [[E type carriage]] for the runs to [[Warrnambool railway station|Warrnambool]] and [[Yarram railway station|Yarram]].

=====Standard Gauge cars=====
When the [[North East railway line|standard gauge line]] to Albury was opened for passenger traffic, the Victorian Railways planned to convert five each of the AZ and BZ class carriages to standard gauge, to provide extra sitting capacity. This was in conjunction with a handful of [[S type carriage]]s. The five AZ carriages, 9AZ to 13AZ, were converted in the last quarter of 1961, recoded and stored until required for the opening of the new line. They were followed by conversions of BZ cars 9-12, which were similarly stored. At this time the thirteenth BZ-type shell was still under construction and it caught fire on the production line, so 8BZ was quickly modified and was made available for standard gauge service in February 1962. The ten cars were allocated standard gauge codes of VBK 4, 2, 3, 1, 5 and VFK 2, 3, 4, 1 and 6. When 13BZ was completed it was immediately placed on standard gauge as VFK5.

The codes followed NSW carriage code convention, with V indicating Victorian stock, B and F indicating first and second class respectively, and K being a spare third letter to indicate the type. (Incidentally, the class "K" was later used for the Australian National Railways 500/600/700 series passenger carriages leased by V/Line.)

Cars 3AZ and 3BZ were fitted with extra equipment allowing a fast conversion to standard gauge if additional seating capacity was required on the [[Central railway station, Sydney|Sydney]] run, and the extra capacity could be freed from the broad gauge system.

====Sleeping car====
VAM1, a Z-type sleeping and sitting car, entered service on the standard gauge in 1963. This car attached to the rear of the ''[[Spirit of Progress]]'' and was detached at [[Goulburn railway station|Goulburn]], then taken by a separate train to [[Canberra railway station|Canberra]]. When the car was returned to broad gauge on 25 October 1983, it was classed SZ287.<ref name="Newsrail February 1986 p57">Newsrail February 1986 p57</ref>

===Carriage sets===
Operation of fixed carriage sets was not introduced until 1981, with the [[New Deal (railway)|New Deal]] reforms of passenger rail operations and the introduction of the [[N type carriage]]s. Most of the Z cars was placed into sets made up of an ACZ carriage, [[S type carriage|BRS snack car carriage]], and between one and three other BS and BZ carriages.

7BZ was the first to be renumbered to the new scheme, becoming BZ270 on 21 November 1983.<ref name="Newsrail February 1986 p57"/> 2VBK was similarly renumbered to VBK260 on 20 December 1983, and 3VBK to VBK261 on 5 April 1984.<ref>Newsrail February 1986 p58</ref>

In 1984-5 the eight AZ cars had conductor compartments added, and were reclassed as ACZ 251-258, followed by ACZ260 and 262 ex VBK cars 2 and 4 in 1986. 1990-1991 saw the three remaining VBK cars transferred to broad gauge, as ACZ259 (ex VBK259), ACZ261 (ex VBK261) and AZ263 (ex VBK263); the latter was converted to ACZ within a year.

Other cars were simply recoded, with VAM1 moving to broad gauge and being reclassed SZ287, while the seven broad gauge and six standard gauge economy carriages were renumbered 264-276 ex 1BZ-7BZ, VFK1-VFK6.

In the early 1990s the six VFK cars were returned to broad gauge and refitted internally with a better type of seating, being coded BZS to differentiate them from the existing BZ class. This was around the time the [[Riverina Express|Riverina XPT]] was extended to Melbourne.

From 1993 some of the Z sets were broken up as the [[V/Line Sprinter|Sprinter]] railcars arrived, with only two five-car sets remaining: VZ1 and VZ2. The loose cars were utilised as additional cars in the [[N type carriage|N type sets]], with the last Z set being broken up in 2006. A number of loose ACZ / BCZ carriages remain, that can be attached to N type sets.

When West Coast Railway started operating their own trains around 1995, they purchased a handful of carriages from V/Line. Those included ACZ252, 255 and 257, and BZ 267, 269 and 270. ACZ260 was another intended purchase but it had been damaged while on lease to West Coast Railway, before the purchase could occur, so V/Line substituted one of the other three ACZ coaches.

From the early 2000s the Z cars, both ACZ and BZ/BZS, were fitted with upgraded seating to match the N type interiors. Cars rebuilt like this were coded BZN or BTN, depending on whether they were intended to be used as fourth or fifth carriages as attached to an N set.

In December 2008, a N carriage (ACN21) was withdrawn from service to be converted to SG to run on the upgraded Albury-Wodonga line. Before withdrawal this carriage was in N set [[N type carriage|SN7]], along with the BS cars. Because of ACN21's withdrawal, a Z carriage was introduced into the set permanently. The 5 BS cars and the Z car (BCZ257) were joined into a set coded Z57, as a replacement for SN7.

In late 2014, BCZ257 was noted as being semi-permanently coupled to N set VN17 as the fourth carriage. It tends to run on Swan Hill and Bairnsdale services.

Z cars have gradually been returning to service as more bogies are reconditioned. On Thursday 22 September 2016 a test train ran from Melbourne to Geelong and back, with two locomotives, set N11 at the west end and BZN cars 271, 267, 274 and 252.<ref name="facebook.com5"/>

===Set history===
As part of the 1983 [[New Deal (railway)|New Deal]], the steel country passenger rollingstock was organised into sets. The Z sets were numbered 51 to 63, after the ACZ carriages providing the conductor accommodation. However, the sets contained a mixture of [[S type carriage|S]] and Z type carriages.

When West Coast Railway purchased cars from V/Line to operate their Warrnambool service, they acquired ACZ252, ACZ255, ACZ257, BZ267, BZ269 and BZ270. Initially the V/Line logos were covered with white "W" decals, and after the sale was completed on 9 April 1995, the cars were repainted into that company's blue scheme.

Note: Colours are representative only, and do not directly correlate to liveries worn in the era.

After the car identities, "T" indicates through-cabled for head end power; H indicates that the car requires head end power for lighting and air conditioning but is fitted with batteries, and <u>H</u> indicates same without batteries.

{| class="wikitable sortable"
|- bgcolor="#FFFFFF"
!Code
!Set No.
!From
!To
!colspan=2|Car F
!colspan=2|Car E
!colspan=2|Car D
!colspan=2|Car C
!colspan=2|Car B
!colspan=2|Car A (East end)
!Capacity
!Weight
!Length
!Changes to achieve
!Notes
|- 
|Z
|52
|C. June 1986<ref name="auto">Newsrail June 1986 www.facebook.com/photo.php?fbid=10207401899998781&set=p.10207401899998781</ref>
|C. June 1986<ref name="auto"/>
|colspan=2|n/a
|[[E type carriage|BG1]]
|style="background: #002466;"|
|[[S type carriage|BS204]]
|style="background: #FFA500;"|
|[[S type carriage|BS211]]
|style="background: #FFA500;"|
|[[S type carriage|BRS222]]
|style="background: #FFA500;"|
|ACZ252
|style="background: #FFA500;"|
|290
|214t
|114m
|
|
|-
|Z
|53
|C. June 1986<ref name="auto"/>
|C. June 1986<ref name="auto"/>
|colspan=2|n/a
|colspan=2|n/a
|[[S type carriage|BS210]]
|style="background: #FFA500;"|
|[[S type carriage|BS208]]
|style="background: #FFA500;"|
|[[S type carriage|BRS221]]
|style="background: #FFA500;"|
|ACZ253
|style="background: #FFA500;"|
|228
|171t
|91m
|
|
|- 
|Z
|54
|C. June 1986<ref name="auto"/>
|C. June 1986<ref name="auto"/>
|colspan=2|n/a
|colspan=2|n/a
|BZ268
|style="background: #FFA500;"|
|BZ269
|style="background: #FFA500;"|
|[[S type carriage|BRS225]]
|style="background: #FFA500;"|
|ACZ254
|style="background: #FFA500;"|
|236
|179t
|91m
|
|
|- 
|Z
|55
|C. June 1986<ref name="auto"/>
|C. June 1986<ref name="auto"/>
|colspan=2|n/a
|colspan=2|n/a
|[[S type carriage|BS205]]
|style="background: #FFA500;"|
|[[S type carriage|BS202]]
|style="background: #FFA500;"|
|[[S type carriage|BRS224]]
|style="background: #FFA500;"|
|ACZ255
|style="background: #FFA500;"|
|228
|171t
|91m
|
|
|- 
|Z
|55
|C. June 1986<ref name="auto"/>
|C. June 1986<ref name="auto"/>
|colspan=2|n/a
|colspan=2|n/a
|[[E type carriage|BE31]]
|style="background: #002466;"|
|[[S type carriage|BS205]]
|style="background: #FFA500;"|
|[[S type carriage|BRS224]]
|style="background: #FFA500;"|
|ACZ255
|style="background: #FFA500;"|
|236
|171t
|91m
|BS202 faulty; BS205 shifted to Car C and BE31 pulled from E set; then BES50 ex loose replaced BE31 in its set.<ref>((cite web|url=https://www.facebook.com/photo.php?fbid=10207401899998781&set=p.10207401899998781|title=Log In or Sign Up to View|website=www.facebook.com|access-date=11 January 2019))</ref>
|
|-
|Z
|56
|C. June 1986<ref name="auto"/>
|C. June 1986<ref name="auto"/>
|colspan=2|n/a
|colspan=2|n/a
|[[S type carriage|BS203]]
|style="background: #FFA500;"|
|[[S type carriage|BS206]]
|style="background: #FFA500;"|
|[[S type carriage|BRS227]]
|style="background: #FFA500;"|
|ACZ256
|style="background: #FFA500;"|
|228
|171t
|91m
|
|
|- 
|Z
|57
|C. June 1986<ref name="auto"/>
|C. June 1986<ref name="auto"/>
|colspan=2|n/a
|colspan=2|n/a
|BZ270
|style="background: #FFA500;"|
|BZ266
|style="background: #FFA500;"|
|[[S type carriage|BRS226]]
|style="background: #FFA500;"|
|ACZ257
|style="background: #FFA500;"|
|236
|179t
|91m
|
|
|- 
|Z
|58
|C. June 1986<ref name="auto"/>
|C. June 1986<ref name="auto"/>
|colspan=2|n/a
|[[S type carriage|BS212]]
|style="background: #FFA500;"|
|[[S type carriage|BS201]]
|style="background: #FFA500;"|
|[[S type carriage|BS209]]
|style="background: #FFA500;"|
|[[S type carriage|BRS230]]
|style="background: #FFA500;"|
|ACZ258
|style="background: #FFA500;"|
|292
|211t
|114m
|
|
|- 
|Z
|62
|C. June 1986<ref name="auto"/>
|C. June 1986<ref name="auto"/>
|colspan=2|n/a
|colspan=2|n/a
|BZ267
|style="background: #FFA500;"|
|BZ265
|style="background: #FFA500;"|
|[[S type carriage|BRS228]]
|style="background: #FFA500;"|
|ACZ262
|style="background: #FFA500;"|
|236
|179t
|91m
|
|
|- 
|Z
|51
|C. October 1989<ref name="auto1">Newsrail October 1989 www.facebook.com/photo.php?fbid=10207401895398666&set=p.10207401895398666</ref>
|C. October 1989<ref name="auto1"/>
|colspan=2|n/a
|[[S type carriage|BS210]]
|style="background: #FFA500;"|
|[[S type carriage|BS202]]
|style="background: #FFA500;"|
|[[S type carriage|BRS222]]
|style="background: #FFA500;"|
|[[S type carriage|BS208]]
|style="background: #FFA500;"|
|ACZ251
|style="background: #FFA500;"|
|292
|211t
|114m
|
|
|- 
|Z
|53
|C. October 1989<ref name="auto1"/>
|C. October 1989<ref name="auto1"/>
|colspan=2|n/a
|[[E type carriage|BE4]]
|style="background: #002466"|
|[[S type carriage|BS201]]
|style="background: #FFA500;"|
|[[S type carriage|BRS230]]
|style="background: #FFA500;"|
|[[S type carriage|BS213]]
|style="background: #FFA500;"|
|ACZ253
|style="background: #FFA500;"|
|300
|211t
|114m
|
|
|- 
|Z
|54
|C. October 1989<ref name="auto1"/>
|C. October 1989<ref name="auto1"/>
|colspan=2|n/a
|[[E type carriage|BE34]]
|style="background: #002466" |
|[[S type carriage|BS205]]
|style="background: #FFA500;"|
|[[S type carriage|BRS229]]
|style="background: #FFA500;"|
|[[S type carriage|BS206]]
|style="background: #FFA500;"|
|ACZ254
|style="background: #FFA500;"|
|300
|211t
|114m
|
|
|- 
|Z
|55
|C. October 1989<ref name="auto1"/>
|C. October 1989<ref name="auto1"/>
|colspan=2|n/a
|colspan=2|n/a
|BZ270
|style="background: #FFA500;"|
|[[S type carriage|BRS224]]
|style="background: #FFA500;"|
|BZ267
|style="background: #FFA500;"|
|ACZ255
|style="background: #FFA500;"|
|236
|171t
|91m
|
|
|- 
|Z
|57
|C. October 1989<ref name="auto1"/>
|C. October 1989<ref name="auto1"/>
|colspan=2|n/a
|colspan=2|n/a
|colspan=2|n/a
|BZ266
|style="background: #FFA500;"|
|[[S type carriage|BRS228]]
|style="background: #FFA500;"|
|ACZ257
|style="background: #FFA500;"|
|168
|135t
|69m
|
|
|- 
|Z
|58
|C. October 1989<ref name="auto1"/>
|C. October 1989<ref name="auto1"/>
|colspan=2|n/a
|colspan=2|n/a
|BZ269
|style="background: #FFA500;"|
|[[S type carriage|BRS221]]
|style="background: #FFA500;"|
|BZ265
|style="background: #FFA500;"|
|ACZ258
|style="background: #FFA500;"|
|236
|171t
|91m
|
|
|- 
|Z
|60
|C. October 1989<ref name="auto1"/>
|C. October 1989<ref name="auto1"/>
|colspan=2|n/a
|[[E type carriage|BE19]]
|style="background: #002466" |
|[[S type carriage|BS204]]
|style="background: #FFA500;"|
|[[S type carriage|BRS223]]
|style="background: #FFA500;"|
|[[S type carriage|BS211]]
|style="background: #FFA500;"|
|ACZ260
|style="background: #FFA500;"|
|300
|211t
|114m
|
|
|- 
|Z
|62
|C. October 1989<ref name="auto1"/>
|C. October 1989<ref name="auto1"/>
|colspan=2|n/a
|colspan=2|n/a
|colspan=2|n/a
|[[S type carriage|BS212]]
|style="background: #FFA500;"|
|[[S type carriage|BRS225]]
|style="background: #FFA500;"|
|ACZ262
|style="background: #FFA500;"|
|164
|131t
|68m
|
|
|- 
|Z
|52
|1999-08-xx
|1999-08-xx
|colspan=2|n/a
|colspan=2|n/a
|BS212
|style="background: #00BFFF;"|
|BRS224
|style="background: #00BFFF;"|
|BZ270
|style="background: #00BFFF;"|
|ACZ252
|style="background: #00BFFF;"|
|
|
|
|
|
|- 
|Z
|62
|1990-04-15
|1990-04-15<ref>Newsrail June 1990</ref>
|colspan=2|n/a
|[[S type carriage|BS206]]
|style="background: #FFA500;"|
|[[S type carriage|BS208]]
|style="background: #FFA500;"|
|[[S type carriage|BRS221]]
|style="background: #FFA500;"|
|[[S type carriage|BS211]]
|style="background: #FFA500;"|
|ACZ262
|style="background: #FFA500;"|
|292
|211t
|114m
|
|
|- 
|Z
|57
|1990-12-16
|1990-12-16
|colspan=2|n/a
|colspan=2|n/a
|colspan=2|n/a
|BZ267
|style="background: #FFA500;"|
|[[S type carriage|BRS228]]
|style="background: #FFA500;"|
|ACZ257
|style="background: #FFA500;"|
|236
|171t
|91m
|
|Was running with SJ282-SJ284 west end, D316-VMAP7-VMAP10 west end

|- 
|FZ
|56
|1990-12-17
|1990-12-17
|colspan=2|n/a
|colspan=2|n/a
|BZ270
|style="background: #FFA500;"|
|[[S type carriage|BRS227]]
|style="background: #FFA500;"|
|BZ265
|style="background: #FFA500;"|
|ACZ256
|style="background: #FFA500;"|
|236
|171t
|91m
|
|
|- 
|"Z"
|59
|1997-04-09<ref name="auto2">Newsrail July 1997 p.225</ref>
|
|colspan=2|n/a
|BCZ258H
|style="background: #B22222;"|
|BCZ251H
|style="background: #B22222;"|
|[[S type carriage|BS216<u>H</u>]]
|style="background: #B22222;"|
|[[S type carriage|BS217<u>H</u>]]
|style="background: #B22222;"|
|ACZ259<u>H</u>
|style="background: #B22222;"|
|
|
|
|
|
|- 
|VZ
|1
|2005-11-26<ref name="railpage.com.au">((cite web|url=https://www.railpage.com.au/f-p394931.htm|title=V/Line Cars Update 26/11-Consists, N5 Composite Brake Blocks|website=Railpage|access-date=11 January 2019))</ref>
|
|colspan=2|n/a
|BTN251
|style="background: #B22222;"|
|BZN256
|style="background: #B22222;"|
|BTN253
|style="background: #B22222;"|
|ACZ259
|style="background: #B22222;"|
|D335
|style="background: #B22222;"|
|
|
|
|Ex-West Coast Railway.
|
|- 
|VZ
|2
|2005-11-26<ref name="railpage.com.au"/>
|
|colspan=2|n/a
|colspan=2|n/a
|BZN261
|style="background: #B22222;"|
|BS216
|style="background: #B22222;"|
|BTN268
|style="background: #B22222;"|
|ACZ262
|style="background: #B22222;"|
|
|
|
|Ex-West Coast Railway.
|
|- 
|FZ
|3
|
|2004-11-26<ref name="railpage.com.au1">((cite web|url=https://railpage.com.au/f-t14063.htm|title=Vline &quot;BS&quot; Cars and What services they are used on|website=Railpage|access-date=11 January 2019))</ref>
|colspan=2|n/a
|BTN253
|style="background: #B22222;"|
|BS215
|style="background: #B22222;"|
|BZ267
|style="background: #B22222;"|
|ACZ257
|style="background: #B22222;"|
|PCO2
|style="background: #B22222;"|
|268 + 10 tonnes
|262t
|115m
|Ex-West Coast Railway.
|ACZ257 wheelchair accessible west end door.
|- 
|Z
|3
|2004-11-26<ref name="railpage.com.au1"/>
|Before 2005-11-28<ref>((cite web|url=https://www.railpage.com.au/f-p392419.htm#392419|title=V/Line Cars Update 26/11-Consists, N5 Composite Brake Blocks|website=Railpage|access-date=11 January 2019))</ref>
|colspan=2|n/a
|colspan=2|n/a
|BS215
|style="background: #B22222;"|
|BZ267
|style="background: #B22222;"|
|ACZ257
|style="background: #B22222;"|
|PCO2
|style="background: #B22222;"|
|
|
|
|Remove BTN253
|ACZ257 wheelchair accessible west end door.
|- 
|Z
|57
|2009-03-29<ref>((cite web|url=http://vicsig.net/index.php?page=passenger&set=Z&number=57|title=VICSIG|website=vicsig.net|access-date=11 January 2019))</ref>
|2010-08-09<ref>((cite web|url=https://railgallery.wongm.com/vline-melbourne/E105_6721.jpg.html|title=The last run of set SZ7: N474 leads the up South Geelong service at Yarraville|first1=Marcus|last1=Wong|website=Wongm's Rail Gallery|access-date=11 January 2019))</ref>
|[[S type carriage|BS217]]
|style="background: #B22222;"|
|[[S type carriage|BS219]]
|style="background: #B22222;"|
|[[S type carriage|BS216]]
|style="background: #B22222;"|
|[[S type carriage|BS218]]
|style="background: #B22222;"|
|[[S type carriage|BS215]]
|style="background: #B22222;"|
|BCZ257
|style="background: #B22222;"|
|364
|283.7t
|137m
|Power doors fitted on entry to service.
|Sometimes referred to as SZ7 because all the remaining S type carriages were included in the consist. First run was #8231 1655 Spencer Street to Marshall. BS carriages taken from set SN7.
|}

Unlike the H and N sets, the Z sets were usually labelled just as Z with the number, regardless of the number of cars in the set. FZ (four car) and VZ (five car) sets were only identified as such from about 2004, when the sets became more fixed.

As the Z sets were dissolved, their carriages were converted to BZN or BTN cars for inclusion in [[N type carriage#Set history|N sets]]. As at July 1997, there were seven FN type sets with a BZN included in their consist, plus two VN sets with a BZ and BCZ, and one Z set, Z59, as ACZ259-BZ-BS-BS-BCZ51H (The BS cars were BS216 and BS217). Additionally, one ACZ and three BCZ cars were spares, not allocated to active sets.<ref>Newsrail July 1997 p.215</ref>

===Current status===
By current codes. 251-263 are ex-AZ/ACZ/VBK, 264-276 are ex-BZ/VFK, 287 is ex-SZ/VAM.

====V/Line fleet====
As at September 2015, 22 remained in service with V/Line. Of those, nine were out of service awaiting new bogie frames.<ref>"Vline's growing Vlocity fleet reflects rising patronage" ''[[Railway Digest]]'' September 2015 page 25</ref> Another four had been restored to service by mid December 2016.<ref name="facebook.com5"/>

*In service, V/Line Passenger: BTN 251, 253, 259, 263; BZN 252, 256, 261, 265, 267, 271-276, BCZ 257, PZ 260
*Under repair, V/Line Passenger: BTN 254, 264 & 268; BZN 258, 262 & 266

[[File:BCZ257.jpg|thumb|BCZ257 at Southern Cross on Platform 4]]
[[File:PZ260.jpg|thumb|PZ260]]

The allocation as at early 2018 is, or will be:

=====Original AZ carriages=====
*BTN251 - Set [[N type carriage|VN10]] from January 2017.<ref name="facebook.com5">((cite web|url=https://www.facebook.com/groups/VictorianRailwayEnthusiasts/|title=Victorian Railway Enthusiasts|website=www.facebook.com|access-date=11 January 2019))</ref>
**Previous allocations: Z59 (5-car) as BCZ251H at 1997-04-09<ref name="auto2"/>
*BZN252 - Set [[N type carriage|FN13]] from January 2017.<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|FN10]] from September 2016.<ref name="facebook.com5"/>
*BTN253 - Set [[N type carriage|VN18]] from January 2017.<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|VN17]].<ref name="facebook.com5"/> Was a loose car (BCZ253T) at 1997-04-09<ref name="auto2"/>
*BTN254 - Stored at Newport Workshops, awaiting new bogies.<ref name="facebook.com5"/> Will proceed to set VN14.<ref name="facebook.com5"/>
**Previous allocations: [[N type carriage|FN18]] circa 2008-2012; [[N type carriage|FN3]] circa 2007; [[N type carriage|N17 (5-car)]] as BCZ254<u>H</u> at 1997-04-09<ref name="auto2"/>
*BZN256 - Set [[N type carriage|VN3]] (formerly FN3).<ref name="facebook.com5"/>
**Previous allocations: x
*BCZ257 - Set [[N type carriage|VN19]] from January 2017.<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|FN9]] from January 2016. Was coupled to FN6 for a time, but not officially part of the consist. Was given to 707 Operations in early 2023.
*BZN258 - Stored at Newport Workshops, awaiting new bogies.<ref name="facebook.com5"/> Will proceed to set VN14.<ref name="facebook.com5"/>
**Previous allocations: [[N type carriage|VN17]] circa 2001-2015; Z59 (5-car) as BCZ258H at 1997-04-09<ref name="auto2"/>
*BTN259 - Set [[N type carriage|VN6]] from January 2017.<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|VN12]].<ref name="facebook.com5"/> Z59 (5-car) as ACZ259<u>H</u> at 1997-04-09<ref name="auto2"/>
*ACZ260 - Modified and reclassed as PZ260
**Previous allocations: x
*BZN261 - Set [[N type carriage|VN17]]<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|FN3]],<ref name="facebook.com5"/> [[N type carriage|N4 (5-car)]] as BCZ261<u>H</u> at 1997-04-09<ref name="auto2"/> West end was damaged in shunting side-swipe in morning of Wednesday 20 August 1997.<ref>Newsrail December 1997 p.387</ref>
*BZN262 - Stored at Newport Workshops, awaiting new bogies.<ref name="facebook.com5"/> Will proceed to set VN10.<ref name="facebook.com5"/>
**Previous allocations: [[N type carriage|FN3]] from 2008, and [[N type carriage|FN5]] circa 2010. Was a loose car (ACZ262<u>H</u>) at 1997-04-09<ref name="auto2"/>
*BTN263 - Set [[N type carriage|VN17]]<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|FN14]].<ref name="facebook.com5"/> [[N type carriage|FN12]] as BCZ263<u>H</u> at 1997-04-09<ref name="auto2"/>

=====Original BZ carriages=====
*BTN264 - Set [[N type carriage|VN3]].<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|FN14]],<ref name="facebook.com5"/> [[N type carriage|N4 (5-car)]] as BZ264H at 1997-04-09<ref name="auto2"/>
*BZN265 - Set [[N type carriage|FN9]].<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|FN19]].<ref name="facebook.com5"/> Was a loose car (BZN265<u>H</u>) at 1997-04-09<ref name="auto2"/>
*BZN266 - Set [[N type carriage|VN5]] (was FN5).<ref name="facebook.com5"/>
**Previous allocations: [[N type carriage|N17 (5-car)]] as BZ266H at 1997-04-09<ref name="auto2"/>
*BZN267 -  Set [[N type carriage|FN4]]<ref>((cite web|url=https://www.facebook.com/groups/vicsig/|title=Vicsig|website=www.facebook.com|access-date=11 January 2019))</ref>
**Previous allocations: Set [[N type carriage|FN14]] late 2016.<ref name="facebook.com5"/> Set [[N type carriage|FN4]] from 2009.<ref name="facebook.com5"/>
*BTN268 - Workshops. Will go to VN11.<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|FN13]].<ref name="facebook.com5"/> Set [[N type carriage|FN10]] temporarily in August 2016.<ref name="facebook.com5"/>
*BZN271<u>H</u> - Set [[N type carriage|VN19]].<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|FN11]] from 2013.<ref name="facebook.com5"/> [[N type carriage|FN1]] at 1997-04-09<ref name="auto2"/>
*BZN272<u>H</u> - Set [[N type carriage|VN12]].<ref name="facebook.com5"/>
**Previous allocations: [[N type carriage|FN10]] circa 1995; [[N type carriage|N9 (4-car)]] at 1997-04-09<ref name="auto2"/>
*BZN273<u>H</u> - Set [[N type carriage|VN10]].<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|FN19]]<ref name="facebook.com5"/> in 2016, [[N type carriage|FN15]] at 1997-04-09<ref name="auto2"/>
*BZN274<u>H</u> - Set [[N type carriage|VN6]] (was FN6).<ref name="facebook.com5"/><ref>((cite web|url=https://www.facebook.com/photo.php?fbid=10153946179973595&set=gm.1111160622253292&type=3&theater|title=Log In or Sign Up to View|website=www.facebook.com|access-date=11 January 2019))</ref>
**Previous allocations: Was a loose car (BZN274<u>H</u>) at 1997-04-09<ref name="auto2"/>
*BZN275<u>H</u> - Set [[N type carriage|FN18]] from 2016.
**Previous allocations: [[N type carriage|FN19]] circa 1995 through 1997.<ref name="auto2"/>
*BZN276<u>H</u> - Set [[N type carriage|VN11]].<ref name="facebook.com5"/>
**Previous allocations: Set [[N type carriage|VN17]] 2016,<ref name="facebook.com5"/> [[N type carriage|FN10]] circa 1995-1997, also in 2007 and 2016 (temporarily withdrawn during bogie issues).<ref name="auto2"/>
Sets SN1, SN15, SN16 and soon SN8 are on standard gauge, exclusively operating with N type carriages; and sets N2 and N7 were dissolved to provide carriages to form those.

====Preserved====
* In service, 707 Operations, Newport West Block: ACZ255, ACZ257, BZ270
* In service, Seymour Railway Heritage Centre: VAM1 (SZ287), PZ10 (PZ260, ACZ260)
* In service, Steamrail, Newport West Block: BZ269 "Hobsons Bay"

==References==
((Reflist|30em))

==Further reading==
*[http://vlinecars.com/fivezsets.htm V/Linecars.com: VZ sets]
**[http://vlinecars.com/aczcars.htm V/Linecars.com: ACZ/BCZ cars]
**[http://vlinecars.com/bzcars.htm V/Linecars.com: BZ cars]
**[http://vlinecars.com/bzncars.htm V/Linecars.com: BZN cars]
**[http://vlinecars.com/btncars.htm V/Linecars.com: BTN cars]
*[http://www.pjv101.net/cd/pages/c323m.htm Peter J Vincent: AZ cars]
**[http://www.pjv101.net/cd/pages/c295m.htm Peter J Vincent: ACZ cars]
**[http://www.pjv101.net/cd/pages/c386m.htm Peter J Vincent: BCZ cars]
**[http://www.pjv101.net/cd/pages/c477m.htm Peter J Vincent: VBK cars]
*[http://www.pjv101.net/cd/pages/c329m.htm Peter J Vincent: BZ cars]
**[http://www.pjv101.net/cd/pages/c484m.htm Peter J Vincent: VFK cars]
**[http://www.pjv101.net/cd/pages/c403m.htm Peter J Vincent: BZS cars]
*[http://www.pjv101.net/cd/pages/c402m.htm Peter J Vincent: BZN cars]
*[http://www.pjv101.net/cd/pages/c024m.htm Peter J Vincent: VAM / SZ car]

((VRLocos))

[[Category:Victorian Railways carriages]]

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