Electric and/or electronic measuring, checking (supervision) and/or signalling apparatus and/or instruments, in particular for road transport, recording devices and/or apparatus and/or installations for measuring, recording distances and/or speeds, radar detectors, speed control devices, speed measuring devices, speed measuring equipment, laser speed detectors, electronic and/or electric display equipment, electric and/or electronic display devices, electric and/or electronic display boards, electronic and/or electric displays, speed displays, traffic counting devices, apparatus and installations for monitoring and/or controlling traffic, programs for evaluating traffic counts and/or monitoring results.