Meaning and effect of square traffic signs

According to the Vietnamese National Standard QCVN 41:2019/BGTVT, in addition to their square shape as the name suggests, this group of traffic signs is also identifiable by its distinct colors, each with a different meaning. Specifically:

- Square directional signs: These signs primarily have a blue background with white illustrations. If the background is white, the illustrations and text are black.

Road signs are used to indicate directions or other necessary information to help road users control their vehicles and guide traffic on the road, ensuring convenience and safety.

- Square supplementary signs: These signs have a white background with black drawings and text, or a blue background with white text. Square supplementary signs are always placed directly below the main sign.

Some common types of square traffic signs.

Supplementary signs are often placed in conjunction with main signs (prohibition signs, mandatory signs, danger and warning signs, directional signs) to provide explanation and additional information for better understanding.

According to the Vietnamese National Standard QCVN 41:2019/BGTVT, some square-shaped traffic signs currently in use include:

Sign I.405c “Dead end ahead”: This sign is placed 300-500 meters before a dead end, and an additional sign must be placed every 100 meters.

Traffic sign I.406 “Priority on narrow roads”: With this traffic sign, motorized vehicles have the right to proceed first on narrow roads.

Sign I.407a “One-way street”: This sign is usually placed after an intersection.

Sign I.408 “Parking Area”: This sign indicates places where parking is permitted, such as parking lots, bus stations, etc.

Sign I.409 “U-turn area”: This sign indicates a location where U-turns are permitted.

Sign I.410 “U-turn area”: Used to indicate an area where vehicles are permitted to make a U-turn.

Traffic sign I.413a “Road ahead has a lane for passenger cars”: Used to indicate to road users that the road ahead has a lane reserved for passenger cars traveling in the opposite direction.

Sign I.413 (b,c) “Turn onto a road with a lane for passenger cars”: This sign is used to indicate to road users that at an intersection, turning right or left leads to a road with a lane specifically for passenger cars.

Sign I.418 “Route at intersections where turning is prohibited”: This sign indicates a route where turning is prohibited at intersections.

Sign I.423 (a,b) “Pedestrian crossing point”: Indicates pedestrians and road users of the designated pedestrian crossing point.

BAO HUNG

Source