Inventor

PIEROWICZ JOHN A

US2 patents

Patents

2 patents

US6516273B1Feb 4, 2003

Method and apparatus for determination and warning of potential violation of intersection traffic control devices

VERIDIAN ENGINEERING INC154 citations92

US6624782B2Sep 23, 2003

System and method for avoiding accidents in intersections

VERIDIAN ENGINEERING INC111 citations91