1. Separation function: The traffic isolation belt separates the traffic of motor vehicles, non-motor vehicles and pedestrians, and vertically separates the roads on the road sections, so that motor vehicles, non-motor vehicles and pedestrians can drive separately, which improves the safety of road traffic and improves the traffic order.

2. Blocking function: Traffic barriers will block bad traffic behavior and pedestrians or bicycles or motor vehicles trying to cross the road. It requires the guardrail to have a certain height, a certain density (column) and a certain strength.

3. Warning function: Through installation, the outline on the guardrail is concise and bright, warning drivers to pay attention to the existence of guardrail, pedestrians and non-motor vehicles to prevent traffic accidents.

4. Aesthetic function: The guardrail with different materials, different forms, different shapes and different colors can achieve harmony and coordination with the road environment.

It can be seen that the urban traffic barrier is not only the simple isolation of roads, but also a key purpose is to express and transmit urban traffic information to people and vehicles, establish traffic rules, maintain traffic order, and make urban traffic achieve safe, fast, orderly, smooth and convenient effects.

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