Based on width error introduced by car rearview mirror in currently dynamic width and height measurement

design width and height measuring system based on expert knowledge base. The system combines expert knowledge base and database

remove width of car rearview mirror effectively. Through verification of on-site data from an oversize check station where vehical width and height measuring system is installed. The results show that measurement accuracy of width meet"regulations of oversize and overweight carrier vehical on the road"

and accuracy as high as 98. 8 %.