上海市公路管理处于1981年11月5日上午8时至6日上午8时连续24小时内,进行首次大规模的公路交通流量比重的测试和调查。调查测试在市郊1,400公里的112条公路上设208个站进行,三个处属养路工区和十个县的公路管理所共组织3,500多名干部、工 Shanghai Highway Management Office conducted the first large-scale test and investigation of the proportion of highway traffic flow within 24 hours from 8:00 am on November 5, 1981 to 8:00 am on the 6th. The survey test conducted 208 stations on 112 highways of 1,400 kilometers in the suburbs, and more than 3,500 cadres were organized by three road management agencies in the road maintenance work area and ten counties