The road signs used in Mexico are regulated by Secretaría de Comunicaciones y Transportes's Directorate-General for Roads (Dirección General de Carreteras), and uniformized under a NOM standard[1] and the Manual de Señalización y Dispositivos para el Control de Tránsito en Calles y Carreteras (Manual of Signage and Traffic Control Devices for Streets and Highways),[2] which serves as a similar role to the MUTCD developed by the Federal Highway Administration. The signs share many similarities with those used in the United States and Canada. Like Canada but unlike the United States, Mexico has a heavier reliance on symbols than text legends.[3]
Before the eventual promulgation of an updated federal NOM standard in 2023,[1] with a comprehensive catalog of signs for use in urban contexts—absent in previous norms[note 1]—, signage varied greatly across states;[4][note 2] for instance, the state of Jalisco applied its own sign standard to state highways that is based on the 2011 NOM standard, whose signs were largely identical to those designed for the 1986 Manual de Dispositivos. Among other things, mandatory signs are circular, as in the European and some South American countries but unlike in the federal NOM standard.[5]
This country drives to the right.
SR-6: Stop
SR-7: Yield
SR-8: Customs
SR-9: Speed limit
SR-10: Right turn only
SR-11: Ahead only
SR-11a: Keep right
SR-11b: Left permitted
SR-11c: Right permitted
SR-12: Left turn only
SR-13: Trucks keep right
SR-14: Two-way traffic
SR-15: Height limit
SR-16: Width limit
SR-17: Weight limit
SR-18: Overtaking prohibited
SR-19: Passenger vehicles prohibited from stopping
SR-20: No stopping
SR-21: Parking permitted
SR-22: No parking
SR-23: Right turn prohibited
SR-24: Left turn prohibited
SR-25: U-turn prohibited
SR-25a: U-turn permitted
SR-26: No entry
SR-27: Pedal cycles, heavy vehicles and motorcycles prohibited
SR-27a: Motorcycles prohibited
SR-28: Animal-drawn vehicles prohibited
SR-29: Agricultural vehicles prohibited
SR-30: Pedal cycles prohibited
SR-31: Pedestrians prohibited
SR-32: Heavy vehicles prohibited
SR-33: Use of audible signals prohibited
SR-34: Seat belt required
SR-35: No switching to left lane
SR-35a: No switching to right lane
SR-36: Motor vehicles prohibited
SR-37: One way (left)
SR-37a: One way (right)
SR-9a: Maximum speed limit (plaque)
SP-6: Curve (left)
SP-6a: Curve (right)
SP-7: Sharp curve (left)
SP-7a: Sharp curve (right)
SP-8: Reverse curve (left)
SP-8a: Reverse curve (right)
SP-9: Sharp reverse curve (left)
SP-9a: Sharp reverse curve (right)
SP-10: Winding road (left)
SP-10a: Winding road (right)
SP-11: Crossroads
SP-12: T-junction (left)
SP-12a: T-junction (right)
SP-14: Delta junction
SP-14: Branch junction (left)
SP-14a: Branch junction (right)
SP-15: Y-junction (left)
SP-15a: Y-junction (right)
SP-16: Roundabout
SP-17: Merging traffic
SP-18: Two-way traffic
SP-19: Exit ahead
SP-20: Symmetrical narrowing
SP-21: Asymmetrical narrowing
SP-22: Drawbridge
SP-23: Narrow bridge
SP-24: Clear width
SP-25: Clear height
SP-26: Ford
SP-27: Unpaved road ahead
SP-28: Slippery road
SP-29: Steep descent
SP-30: Falling rocks
SP-31: Stop sign ahead
SP-31a: Yield sign ahead
SP-32: Pedestrians
SP-33: School crossing
SP-33a: School zone
SP-34: Domestic livestock
SP-35: Railroad crossing
SP-36: Tractors
SP-37: Traffic signals ahead
SP-38: Divided road begins
SP-38a: Fork
SP-38b: Divided road ends
SP-39: Cyclists
SP-40: Loose chippings
SP-41: Bump ahead
SP-41a: Uneven surface
SP-42: Tunnel ahead
SP-43: Dangerous crosswinds
OD-12: Chevron
SPP-1: Men working
SPP-2: Pile of materials on the way
SIP-8: Detour
SIS-1: Airport
SIS-7: Litter container
SIS-8: Parking zone
SIS-11: Gas station
SIS-17: Hospital
SIS-19: Bus stop
SIS-20: Rail station
SIS-13: Hotel
SIS-22: Restaurant
SIS-51: Disabled accessible ramp
Advance directional sign
SIR-1: Railroad crossing