Detecting speeding vehicles including means for detecting the transverse position of a vehicle

摘要

A machine for detecting traffic offences comprises means 1, 3 for measuring the speed of transit v of a vehicle V along a carriageway and, connected to these, camera means 5 for capturing an image of the vehicle. Means F3 are also provided for detecting the transverse position d of the vehicle across the carriageway. The camera means are controlled as a function of the transverse position d. The camera means may include a camera unit whose viewing angle is oriented as a function of the detected transverse position. The camera means may include multiple camera units oriented in different directions, the image of the vehicle being captured by one of the units selected as a function of the detected transverse position. The means for measuring the speed of transit of the vehicle may include a laser transducer that emits and receives at least two mutually parallel laser beams, the speed being calculated as a function of the length of time that lapses between the obscuring of the first laser beam and that of the second laser beam by the vehicle.