Since the network toll collection throughout the country, ETC lane has become the mainstream model of non-cash charges. But there are still some vehicles using cash, Wechat, Alipay and other payment methods. Under the new toll charging mode, the on-site toll collectors need to face more abnormal events with the increasing working pressure. How to relieve the working pressure of on-site toll collectors, to optimize the configuration of toll collectors and to reduce the operation pressure of enterprises have become the difficulties of each expressway management unit.