4STRATHMAN J G. Economics of overloading and the effect of weight enforcement [EB/OL]. http:∥www.upa. pdx. edu/CUS/publications/docs, 2004-08-22.
5EISSON B, GOULD D. Methodology for evaluation of truck weight regulation enforcement programs [A].Transportation Research Record 1249[C]. Washington DC:TRB,1989.16-17.
6CASAVANT K,LENZI J. An economic evaluation of the fee and fine structure for overloaded trucks in Washington [J]. Transportation Quarterly, 1993, 47(2):281-294.