Expressway Toll System Design And Development

Today the highway constructions grow fast in our country which leads frequent transformations on highway toll collection system.The toll collection system is becoming more and more quick,accuratejust and efficient.The on-line toll collection system of highway improves as possible the disadvantage of the old toll collection system,which looks on the highway net as a whole and avoids the automobiles from parking in the highway net,so,it has become an inevitable trend in the toll collection of highway.This passage makes discussion on the development of the highway toll collection system and the trend of today's technology. Then ,this passage give an elaborate introduction on the design,key technology and some realization of the on-line toll collection of highway.The first chapter makes introduction on highway and the highway toll collection system,demonstrates on the necessity and feasibility of the on-line toll collection and introduces the general structure of it.The second chapter analyses the structure and the operation flows of charge lane , designs the data types and realizes the charge lane subsystem through rational software modules.The third chapter designs a mathematic model for the toll settlement subsystem in the charge center,gives the precept of making the toll-table in consideration of discounting,uses the toll "key" and double checkout to insure the reliability of toll settlement and designs the transmission and the key tables in database. The Fourth chapter analyses the sub-system of IC cards management and demonstrates how to emit cards and how to manage the secret key.