Patent ID: 7226265

Claim:
At a docking bay for loading and unloading a heavy-duty vehicle, an apparatus for chocking at least one tire of said vehicle to prevent motion of the vehicle away from said docking bay during said loading and unloading, said apparatus including: a) chock means for wedging between said tire and a surface on which the tire is resting, to block motion of said tire and a wheel on which the tire is mounted away from said docking bay; b) sensor means mounted on said chock means far detecting a predetermined selected component of said vehicle, said sensor means selected from the group consisting of an inductive proximity sensor and a capacitive proximity sensor; c) a programmable microcontroller, said microcontroller being electrically connected to said sensor means; and d) indicator means electrically connected to said microcontroller for indicating a condition selected from the group consisting of, a properly positioned chock means and an improperly positioned chock means, whereby said sensor means detects a steel belt of said tire being chocked, so that at least an individual performing said loading and unloading is alerted to said condition by said indicator means.