FR2732471B1 - METHOD FOR MEASURING THE SEPARATION DISTANCE BETWEEN TWO VEHICLES IN CIRCULATION - Google Patents

METHOD FOR MEASURING THE SEPARATION DISTANCE BETWEEN TWO VEHICLES IN CIRCULATION

Info

Publication number
FR2732471B1
FR2732471B1 FR9503881A FR9503881A FR2732471B1 FR 2732471 B1 FR2732471 B1 FR 2732471B1 FR 9503881 A FR9503881 A FR 9503881A FR 9503881 A FR9503881 A FR 9503881A FR 2732471 B1 FR2732471 B1 FR 2732471B1
Authority
FR
France
Prior art keywords
vehicles
circulation
measuring
separation distance
separation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
FR9503881A
Other languages
French (fr)
Other versions
FR2732471A1 (en
Inventor
Jean Claude Preti
Machet Jean Michel Eynard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SFIM Trafic Transport
Original Assignee
SFIM Trafic Transport
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SFIM Trafic Transport filed Critical SFIM Trafic Transport
Priority to FR9503881A priority Critical patent/FR2732471B1/en
Publication of FR2732471A1 publication Critical patent/FR2732471A1/en
Application granted granted Critical
Publication of FR2732471B1 publication Critical patent/FR2732471B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
    • G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
    • G01S13/92—Radar or analogous systems specially adapted for specific applications for traffic control for velocity measurement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/932—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles using own vehicle data, e.g. ground speed, steering wheel direction
FR9503881A 1995-04-03 1995-04-03 METHOD FOR MEASURING THE SEPARATION DISTANCE BETWEEN TWO VEHICLES IN CIRCULATION Expired - Fee Related FR2732471B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9503881A FR2732471B1 (en) 1995-04-03 1995-04-03 METHOD FOR MEASURING THE SEPARATION DISTANCE BETWEEN TWO VEHICLES IN CIRCULATION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9503881A FR2732471B1 (en) 1995-04-03 1995-04-03 METHOD FOR MEASURING THE SEPARATION DISTANCE BETWEEN TWO VEHICLES IN CIRCULATION

Publications (2)

Publication Number Publication Date
FR2732471A1 FR2732471A1 (en) 1996-10-04
FR2732471B1 true FR2732471B1 (en) 1997-06-06

Family

ID=9477671

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9503881A Expired - Fee Related FR2732471B1 (en) 1995-04-03 1995-04-03 METHOD FOR MEASURING THE SEPARATION DISTANCE BETWEEN TWO VEHICLES IN CIRCULATION

Country Status (1)

Country Link
FR (1) FR2732471B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410263B (en) * 1999-11-12 2003-03-25 Robert Ing Sierzega MEASURING METHOD FOR DETERMINING AND DOCUMENTING THE DISTANCE OF TWO VEHICLES
FR2823352B1 (en) * 2001-04-04 2009-04-24 Positive VEHICLE INTERDISTANCE CONTROL INSTALLATION
FR2873480B1 (en) * 2004-07-21 2008-05-30 Sagem METHOD AND SYSTEM FOR MONITORING VEHICLES IN TRAVEL
CN1302444C (en) * 2005-03-25 2007-02-28 上海百太信息科技有限公司 A digital image shooting system triggered by acceleration signal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173010A (en) * 1975-05-01 1979-10-30 Hoffmann Anton R Traffic sign and improved system for recording vehicle speed
DE3335747A1 (en) * 1983-10-01 1985-04-11 Ulrich 4350 Recklinghausen Lüding Method and device for monitoring the change in spacing of, in particular, motor vehicles on roads
IL86202A (en) * 1988-04-27 1992-01-15 Driver Safety Systems Ltd Traffic safety monitoring apparatus
GB2269693B (en) * 1992-08-11 1995-08-02 Truvelo Manufacturers Traffic monitoring
DE4235232A1 (en) * 1992-10-15 1994-04-21 Refit E V Verein Zur Regionalf Continuous determination of vehicle speeds and distances - using video-camera with vertical optical axis above road and successively timed exposures referred to uniformly spaced reference planes.

Also Published As

Publication number Publication date
FR2732471A1 (en) 1996-10-04

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Legal Events

Date Code Title Description
TP Transmission of property
CD Change of name or company name
ST Notification of lapse

Effective date: 20131231