3m Innovative Properties Company

Greenfield Enterprises, Inc

Kevin Judge

Gary V Jones

Richard Keegan

James C Beck

Ronald Hatch

For qualification for traffic preemption an area is defined and if the vehicle is in the area it can obtain preemption. The vehicle's position is determined, in one embodiment, by use of differential GPS.

Automatic determination of traffic signal preemption using GPS, apparatus and method

An electronic compass system and method in which an automatic calibration process is available while the vehicle is in use. The procedure uses a binning process to collect and count data points which automatically triggers the automatic calibration process, and which is also used for manual calibration. Also, there is a procedure for detecting and rejecting anomalous magnetic events outside the vehicle through a jitter phenomenon.

Navigation system and method

Automatic determination of traffic signal preemption using GPS,

Growing community of inventors

Palos Verdes Estates, CA, United States of America

Kevin Judge