1Ken Daley. Electronic tolling experience from the melbourne city link, 7th ITS World Congress [C]. Turin, ITALY,2000
2Jack Klodzinski, Haitham M. Deek AI. Evaluation of open road tolling and express lanes on toll road facilities, Proceeds of second gulf conference on roads[C]. Abu Dhabi, 2004
3WindRiver Systems Inc. VxWorks programmer's guide 5.5 [EB]. U. S. A, 2002
4ATMEL Data Sheet of ARM920T-based Microcontroller AT91RM9200 [EB/OL]. U.S. A, 2006