How far is it reasonable to set up road speed bumps in residential areas?

At present, the commonly used speed bumps mainly include spike speed bumps, hump speed bumps, cement table speed bumps, thermoplastic vibration speed bumps, groove speed bumps, speed bumps and so on.

Principles that must be followed when setting speed bumps.

Judging from the use effect of speed bumps in recent years, speed bumps are a double-edged sword. Setting speed bumps scientifically can effectively improve road traffic safety, otherwise it may have little effect and even become a man-made roadblock on the expressway. In order to make it play an effective role, we must pay attention to the following principles when formulating specific implementation plans [4]:

2.2. 1 targeted principle

That is to say, it is necessary to analyze and determine the type, shape, size, material, connection and installation mode of the speed bump according to the road grade, traffic flow structure, actual average speed, road alignment and pavement material.

System principle

The location and number of speed bumps must be based on investigation or real vehicle road test.

Compatibility principle

Mandatory speed bumps must be used in conjunction with other traffic safety facilities (warning signs, markings, etc.). ) to ensure the safety and efficiency of use.

Design of speed bump

Based on the defects of ordinary speed bumps and the special traffic structure of urban roads (mainly cars), this paper mainly adopts speed bumps of various shapes, and leaves enough space in the middle of each small speed bump for cars, motorcycles and bicycles to pass conveniently and comfortably. The top view of the improved speed bump setting is shown in Figure 3.

Because the car has good braking performance and easy speed control, the appropriate length and spacing of speed bumps can be set according to the wheel track and tire width of the car, so that the car can pass at low speed without bumping.

According to the values of wheel track and tire section width in Table 1 and Table 2, it is suggested that the spacing between speed bumps should be 0.35m and the spacing between adjacent speed bumps should be 2m in residential quarters, schools, enterprises and institutions.

Other specific road sections require on-the-spot investigation. According to the traffic flow structure, the unsafe factors in the road are set according to the specific conditions of the targeted principle, systematic principle and supporting principle.