N-UNCOUNT [usually NOUN n] 道路安全措施，交通缓行措施，交通稳静化(如通过收窄道路、加设障碍物等以限制车速，提升道路安全度) Traffic calming consists of measures designed to make roads safer, for example making them narrower or placing obstacles in them, so that drivers are forced to slow down. 道路安全措施，交通缓行措施，交通稳静化(如通过收窄道路、加设障碍物等以限制车速，提升道路安全度)