Truck auxiliary signs are an indispensable part of the road traffic sign system. They play a role in supplementing information to the main traffic signs, helping truck drivers and other vehicles better understand regulations, instructions and warnings on the road. This article will provide detailed information on truck auxiliary signs according to the QCVN 41:2019/BGTVT Standard.
Classification and Meaning of Truck Auxiliary Signs
According to QCVN 41:2019/BGTVT, truck auxiliary signs are usually rectangular or square, placed below the main traffic sign. Except for sign No. S.507 “Turning Direction” which can be used independently, placed on the back of the curve opposite the direction of travel or in the middle of the safety island where the roads intersect. Here are some common types of truck auxiliary signs:
1. Sign S.501 “Scope of Application of the Sign”
Sign S.501 Scope of Application
This sign indicates the length of the road section where the main traffic sign is valid, and is often used with warning, prohibition or command signs.
2. Sign S.502 “Distance to the Signaled Object”
Sign S.502 Distance to Object
This sign indicates the distance from the sign’s location to the dangerous, prohibited, or noteworthy location ahead.
3. Sign S.503 “Direction of Application of the Sign”
Sign S.503 Direction of Application
This sign indicates the direction in which the main traffic sign is effective (left, right, both directions, forward, backward). For example, sign S.503a placed under a no-parking sign indicates that the prohibition applies to the right side of the road.
4. Sign S.504 “Lane”
This sign is placed on the lane and under the main traffic sign to indicate which lane is subject to the sign’s effect.
5. Sign S.505 “Type of Vehicle”
Sign S.505 Type of Vehicle
This sign specifies which type of vehicle must comply with the main traffic sign, such as trucks, buses, and motorbikes.
6. Sign S.507 “Turning Direction”
Sign S.507 Turning Direction
This sign warns of dangerous turns and safe turns for drivers.
7. Sign S.508 “Time Indication”
This sign specifies the effective time of the main traffic sign, which can be a time of day, even/odd days, or days of the week.
8. Sign S.509 “Explanation of the Main Sign”
Sign S.509 Explanation
This sign supplements information to the main traffic sign, such as the safe height for vehicles passing under power lines.
Importance of Truck Auxiliary Signs
Truck auxiliary signs help truck drivers understand traffic regulations, avoid violations and ensure safety on the road. Understanding the meaning of each type of auxiliary sign is very important, helping drivers operate vehicles safely and efficiently.
Conclusion
Understanding truck auxiliary signs is essential for all truck drivers. Strictly complying with the regulations on traffic signs helps ensure traffic safety and avoid unnecessary risks. Always pay attention to and comply with traffic signs to contribute to building a safe and civilized traffic environment.
