Patent ID: 6326902
Filing Date: 2001-12-04
Classification: G08G

Abstract:
In a vehicular roadway sensor comprising a conductive elastomeric housing having a base and a cavity surface in said base, a sensor wire groove in said cavity surface, 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 sensing wire portion, and one or more insulated signal-carrying conductors connected to said one or more sensor wires, respectively, the improvement comprising, said cavity surface having one or more signal wire grooves therein and said one or more insulated signal conductors being adhesively secured in said one or more signal wire grooves, respectively, so that vehicular traffic traversing said conductive elastomeric housing does not induce significant signals in said one or more insulated signal-carrying conductors.