If traffic needs to be closed or a carriageway is occupied for a long time due to the maintenance project, except for emergency situation, the management and maintenance unit shall issue to the public the information of construction and traffic control together with the traffic police department 15 days ahead of time.
养护工程施工需封闭交通或长时间占用行车道时，除紧急情况外，管养单位应在项目开工前15天，联合公安交警部门向社会发布施工及交通管制信息。