Patent ID: 6744378
Filing Date: 2004-06-01
Classification: E01F,G08G

Abstract:
In a vehicular roadway sensor comprising a conductive elastomeric housing having a sensor wire groove and one or more signal wire in said sensor wire groove, said sensor wire groove comprised of an airgap portion and a sensing wire portion for receiving and maintaining one or more insulated sensing wires in a fixed relation to establish a residual charge relationship with said conductive elastomeric housing so that when said fixed relationship is changed by the wheels of a vehicle on said housing a signal voltage is induced in said sensor, and one or more insulated signal carrying conductors connected to said one or more sensor wires, respectively, the improvement comprising, said one or more insulated signal carrying conductors being mounted in said conductive elastomeric housing so that vehicular traffic traversing said conductive elastomeric housing does not induce significant signals in said one or more insulated signal carrying conductors and wherein each insulated signal-carrying wire is covered with a rubber insulation.