Patent ID: 7908751

Claim:
A method for optical chassis measurement of motor vehicles at a testing site that has at least one measuring unit having two imaging devices associated with one another in position and location, comprising the steps of: orienting the measuring units with respect to the testing site with reference characteristics located fixedly at the testing site; effecting evaluation in an evaluation device on a basis of orientation data and associated data obtained, for determining chassis data of a motor vehicle; in addition to the reference characteristics located fixedly at the testing site, positioning at least one reference device which is usable in mobile fashion at the testing site with reference characteristics; and with a totality of reference characteristics defining a uniform measuring station coordinate system, and thus in a higher-order measurement device, orientation data of the measuring units are obtained; and after the vehicle is driven to the testing site, from the measuring units oriented in the measuring station coordinate system, determining coordination of auto body characteristics (K 1 , K 2 ) located on the vehicle and making the measuring station coordinate system known and available to the evaluation device for each measuring unit, based on said determined coordination of the auto body characteristics, for determining chassis data independently of the reference characteristics.