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)