Patent ID: 7187302
Filing Date: 2007-03-06
Classification: G08G

Abstract:
1. Apparatus for assessing the accuracy of a roadside traffic monitoring station having data measurement means for measuring a parameter of vehicles passing a predetermined measurement point and the moment in time at which each vehicle passes the measurement point, the apparatus comprising: data recording means for recording the parameter of each vehicle and moment in time that vehicle passes the measurement point as measured by the data measurement means; an Instrumented Probe Vehicle having an onboard measuring system for measuring the parameter of the Instrumented Probe Vehicle; timing means for determining the moment in time at which the location of the Instrumented Probe Vehicle as measured by the locating means corresponds to the location of the measurement point; and data processing means for identifying the parameter of the Instrumented Probe Vehicle as measured by the data measurement means from the moment in time at which the Instrumented Probe Vehicle passes the measurement point.