Submitted on: 30 March 1998.
Revised on: 18 May 1998.
Accepted on: 15 June 1998.
___________________Journal of Intelligent Transportation Systems
Submitted on: 08 July 1998.
Revised on: 23 August 1998.
Accepted on: 03 October 1998.
___________________Journal of Intelligent Transportation Systems
http://reply.papertrans.cn/2/175/17464/17464-33.png
http://reply.papertrans.cn/2/175/17464/17464-34.png
Submitted on: 15 March 2006.
Revised on: 14 April 2006.
Accepted on: 11 May 2006.
___________________Journal of Intelligent Transportation Systems
Submitted on: 01 July 2010.
Revised on: 15 September 2010.
Accepted on: 07 November 2010.
___________________Journal of Intelligent Transportation Systems