G - Physics – 08 – G
Patent
G - Physics
08
G
235/134, 340/31
G08G 1/01 (2006.01) G08G 1/133 (2006.01)
Patent
CA 1118861
ABSTRACT OF THE DISCLOSURE A position indicator for automobiles, trucks, and other vehicles includes a numerical display of the vehicle posi- tion with respect to an interstate highway by providing a readout of the mile marker location of the vehicle. The display is actuated by an electrical circuit including a presettable up/down counter in which the initial location of the vehicle with respect to a reference marker along the highway is stored. Subsequent vehicle movement increments or decrements the stored count in response to the receipt of vehicle movement pulses from a pulse generator. A cali- bration circuit is provided to accurately calibrate the system for different vehicles. In one embodiment, a digital keyboard is provided for entering the initial vehicle position information as well as position information as to events along the roadway. A memory circuit is employed to store, for subsequent recall and display, the event location. A warning system is provided to alert the driver with a visual and/or audible alarm when the vehicle approaches one of the stored event locations.
314187
Borden Ladner Gervais Llp
Prince Corporation
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