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一九八一年四月十六至廿七日,在北京召开了国道交通情况调查工作座谈会。参加座谈的有北京、山西、辽宁、黑龙江、上海、江苏、浙江、山东、河南、湖南、广东、广西、四川、云南、陕西、甘肃、宁夏、内蒙等十八个省(市、自治区)的交通部门的代表,还有北京工业大学、北京市交通工程研究所以及交通部公路局、计划局、公路科研所、科技情报所和公路规划设计院的有关同
From April 16 to April 27, 1981, a state-of-the-road traffic situation investigation meeting was held in Beijing. Those attending the forum included 18 provinces (municipalities and autonomous regions) such as Beijing, Shanxi, Liaoning, Heilongjiang, Shanghai, Jiangsu, Zhejiang, Shandong, Henan, Hunan, Guangdong, Guangxi, Sichuan, Yunnan, Shaanxi, Gansu, Ningxia and Inner Mongolia Representatives of the transportation department, and Beijing University of Technology, Beijing Institute of Transportation Engineering and the Ministry of Transportation Highway Bureau, Bureau of Planning, Highway Research Institute, Science and Technology Information Office and Highway Planning and Design Institute of the relevant