Browse Prior Art Database

PASSIVE TRAFFIC ADVANCE WARNING SYSTEMS

IP.com Disclosure Number: IPCOM000008925D
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2002-Jul-24
Document File: 2 page(s) / 108K

Publishing Venue

Motorola

Related People

Ernst Otto Disque: AUTHOR [+2]

Abstract

Upon activation of a vehicle's brakes, a signal is transmitted to any immediately following vehicle. This signal activates the brake lights of the follow- ing vehicle and may provide an audible warning to the driver. The following vehicle re-transmits the signal to the next vehicle in the traflic stream.

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MO-LA Technical Developments

PASSIVE TRAFFIC ADVANCE WARNING SYSTEMS

by Ernst Otto Disque and Siegfried Punzenberger

ABSTRACT

  Upon activation of a vehicle's brakes, a signal is transmitted to any immediately following vehicle. This signal activates the brake lights of the follow- ing vehicle and may provide an audible warning to the driver. The following vehicle re-transmits the signal to the next vehicle in the traflic stream.

INTRODUCTION

  This paper describes a technology of an early warning system for slow or stopping traftic installed in motor vehicles.

PROBLEM(S) TO BE SOLVED

  Road traffic commonly results in streams of moving vehicles, long queues and traffic jams on streets and highways. In situations like these the likelihood of being involved in an accident, e.g., hit- ting the vehicle in front or getting hit by being the vehicle behind, increases significantly.

  The current technology is that upon activation of the brakes of a vehicle its brake lights are lit. No further action is initiated by this unless and until the driver of the vehicle behind notices the braking action of the vehicle in front. Also, any additional

queuing vehicle is at a great disadvantage if the vehicle in front has failed to notice the braking action of the one in front of it at first and then sud- denly stops.

PROPOSED SOLUTION TO THE PROBLEM

  In the system described below the activation of the brake lights of a vehicle in front of another one initiates the sending of information to the vehicle behind and in turn creates audible and/or visual

information for the driver that the vehicle in front is decelerating and he/she has not noticed this. Additionally, or optionally, this signal may cause the brake lights of this (following) vehicle to light (without actually activanng the brakes of this vehi- cle), thus sending information to the next vehicle in the queue. A system like this could significantly shorten the reaction time for vehicle brake initiation thus lowering the probability of accidents in trafIlc jams.

  The system described consists of an infrared, ultrasonic, and/or RF emitting apparatus which is activated by the usage of the brakes on a vehicle or by the subsequent illumination of the brake lights. The above signal (which can be especially coded for this particular use) is emitted to the area behind the vehicle. Depending on the application it can be of a certain strength (power level) to cover the rcquircd distance needed to be "captured" by a receiving device of the vehicle(s), following. The receiving device of the vehicle be...