Key to railway track
and platform alignment
Building or facility
Scissors crossover
Side platforms
Service directions
Island platform
1
2
Platform order
Flat crossings
Tunnel portals
Over another tunnel
B1 (upper)
Platforms on
B2 (lower)
separate levels
(↑ examples)
 
Tunnel portals to viaduct
Bridge over metro track
System boundary
Bridge over river
Platforms not in use
Passing line (exterior)
Bridge over water body
Border
Line end on open track