Patent ID: 7107138

Claim:
An automatic means to disconnect or disable a motor vehicle speed control system when a motor vehicle is decelerating, and a coincident road surface change from dry or damp to wet or snow covered is detected; comprising: a means to detect and to signal the presence or absence of water on a roadway surface; a means to detect and to signal the presence or absence of accumulated snow on a roadway surface; a means to detect and to signal the presence or absence of vehicular deceleration: a means to logically determine that programmed requirements for outputting a disable signal has been met, and to generate and output a disable signal; a means to logically determine that programmed requirements for generating a disable signal have not been met, and to inhibit the output of the disable signal; a means to override a programmed logic controller and to disable the output signal of the programmed logic controller; a means to disable or disconnect the vehicle speed control system when the presence of roadway surface water or snow is detected, and the vehicle is decelerating; and a means to enable or re-enable the vehicle speed control system in the absence of a disable or disconnect signal from the programmed logic controller.