The speed bump is a traffic facility installed on the road to slow down the passing vehicles. The shape is generally strip-shaped or dot-shaped. The material is mainly rubber, and some are metal. Generally, yellow and black are used to attract visual attention and make the road slightly arched. In order to achieve the purpose of vehicle deceleration, the speed bumps produced by wholesale manufacturers of transportation facilities are generally set at highway crossings, industrial and mining enterprises, schools, entrances of residential quarters and other sections where vehicles need to slow down and sections that are prone to traffic accidents. New traffic-specific safety settings for motor vehicles and non-motor vehicles. Speed ​​bumps greatly reduce the occurrence of accidents at various traffic intersections and are traffic safety facilities.
The speed bump is one of the vertical speed control measures. By changing the height or material of a certain section of the road, the motor vehicle is forced to slow down according to the principles of heart and physiology to achieve the purpose of safety. The deceleration is achieved by affecting the driving psychology of the driver.
When the vehicle passes through the speed bump at a high speed, the violent vibration will be transmitted to the driver from the tire through the body and the seat. The vertical curve can generate a vertical acceleration, resulting in strong physiological stimulation (including vibration stimulation and visual stimulation) and psychological stimulation. Physiological stimuli prompt drivers to feel a strong sense of discomfort, while psychological stimuli deepen the driver's unsafe doubts and further reduce the driver's sense of safety on the road environment. Usually, the driver thinks that the greater the discomfort, the less safe the vehicle is, that is, the less sense of security. Therefore, the setting of the speed bump will reduce the driver's expectation of driving safety and riding comfort, prompting the driver to choose a lower expected speed. Guided by the desired speed, the driver will actively drive the vehicle to approach and pass through the speed bump at a lower speed. The ideal speed bump must ensure that the vehicle will not run out of control when the vehicle passes, and the important safety components will not be broken and other dangerous situations, and should have high driving and structural safety.
Therefore, the ideal speed bump should have the following characteristics: with the increase of vehicle speed, the driving safety can be maintained at a stable level or even improved after reducing to a certain extent. The driver's ride comfort is at a high level when the speed is lower than the road speed limit, and when the speed is higher than the road speed limit and lower than 85% of all speeding vehicles, the ride comfort deteriorates rapidly with the increase of vehicle speed, higher than The speed of the speeding vehicle can be maintained at a stable low level at 85% of the speed. The effectiveness of speed bumps depends to a large extent on the speed at which the vehicle is running. Therefore, in order to ensure the safety and comfort of drivers, the speed limit of the road must be reasonably set, and the geometric size of the speed bump must be scientifically designed.