What are the regulations for speed bumps on urban roads?

[HoldenFitz]

According to national transportation technical standards, traffic facilities applied to roads, including speed bumps, must be manufactured to specific specifications. The regulations stipulate that the long side of a speed bump should be 250~500mm, the wide side 200~400mm, and the height 3~10mm. The height of speed bumps is particularly critical, as excessively high speed bumps may cause traffic accidents when vehicles pass at high speeds. The purpose of speed bumps: Speed bumps alert drivers to reduce their speed, especially in harsh environments such as mining sites where heavy vehicles are the primary traffic and flow is high. The quality of speed bumps: Under such conditions, the quality and material of speed bumps are undoubtedly paramount, but their specifications also play a significant role. Speed bumps of different specifications exhibit noticeably different capabilities in withstanding pressure and impact.