Multi purpose communications system for intelligent roadways bas

Details Multi purpose communications system for intelligent roadways bas Multi purpose communications system for intelligent roadways bas

1994-03-04

1998-12-08

Hofsass, Jeffery

Communications: electrical

External condition vehicle-mounted indicator or alarm

Highway information

340 931, 340988, 364436, 364437, 455 491, 455 70, G08G 109

Patent

active

058476636

ABSTRACT:
Real-time, multi-purpose advisories that inform users of roadways on upcoming situations, require frequent gathering and interpreting of information gleaned from road systems, and then feedingback information by means of repeated, spoken descriptives pertinent to each driver's location and heading. A system that provides all this, plus supports interactive communications between specific vehicles and a control center for purposes of describing roadway incidents, for the dispatch of emergency services; to request aid if stranded; to request destination directions; to receive destination-specific alternate-route advisories; etc., is described by the invention. Communication system simplification, essential to system practicality, is realized by time compressed, digitized spoken messages that flow thru single frequency, unidirectional repeaters, each message representing about 30 seconds of spoken descriptive advisory compressed into less than one second. These packets are dropped off and digitally stored at designated repeater sites for radio transmission of the original spoken message to all, or to specific vehicles in that repeater's vicinity.

REFERENCES:
patent: 4962457 (1990-10-01), Chen et al.
patent: 5173691 (1992-12-01), Sumner
patent: 5214793 (1993-05-01), Conway et al.
patent: 5289183 (1994-02-01), Hessett et al.

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