Meaning and effect of square traffic signs

According to QCVN 41:2019/BGTVT, in addition to the square shape as the name suggests, this group of signs is also recognized by its own colors, each type has a different meaning. Specifically:

- Square signs: These signs mainly have a blue background with white drawings. If the background is white, the drawings and writing are black.

Signs are used to indicate directions or necessary things to help traffic participants in controlling vehicles and guiding traffic on the road smoothly and safely.

- Square auxiliary sign: This sign has a white background, black drawings and letters or a blue background, white letters. Square auxiliary signs are placed right below the main sign.

Some common types of square traffic signs.

Supplementary signs are often placed in combination with main signs (prohibition signs, command signs, danger and warning signs, and directional signs) to explain and supplement for better understanding.

According to QCVN 41:2019/BGTVT, some square traffic signs are currently in use such as:

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

Sign I.406 “Priority over narrow roads”: With this traffic sign, motor vehicle users have the right of way on narrow roads.

Sign I.407a “One Way Street”: This sign is usually placed after an intersection.

Sign I.408 “Parking”: Signs used to indicate permitted parking areas, parking lots, bus stations...

Sign I.409 “U-turn”: Sign indicating the location where U-turns are allowed.

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

Sign I.413a “The road ahead has a lane reserved for passenger cars”: Used to indicate to traffic participants that the road ahead has a lane reserved for passenger cars going in the opposite direction.

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

Sign I.418 “Entry at prohibited turns”: The sign is used to indicate passage at intersections where turns are prohibited.

Sign I.423 (a,b) “Pedestrian crossing location”: Indicates pedestrians and traffic participants the location for pedestrian crossing.

BAO HUNG

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