05490079 is referenced by 145 patents and cites 13 patents.

A system for automated toll collection which utilizes Global Positioning System technology. The invention includes a Toll Tag 24 which comprises GPS sensor 32, signpost sensor 36, gatekey transmitter 38, and processing & recording module 40. Module 40 is comprised of memory 30 storing known toll location, computer or toll area detector 34, memory for time and location 42, and time clock 44. Once computer 34 determines that a toll area has been entered, it records the entry in memory 42 and activates transmitter 38 to send a signal to sentry receiver 52 which communicates same to toll authority exchange 26.

Title
System for automated toll collection assisted by GPS technology
Application Number
8/293352
Publication Number
5490079
Application Date
August 19, 1994
Publication Date
February 6, 1996
Inventor
Robert P Lindsley
Lucas
TX, US
Claude A Sharpe
McKinney
TX, US
Agent
Richard L Donaldson
James C Kesterson
Assignee
Texas Instruments Incorporated
TX, US
IPC
G07B 15/00
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