GB655876A - Radio control system for traffic signals - Google Patents

Radio control system for traffic signals

Info

Publication number
GB655876A
GB655876A GB34075/47A GB3407547A GB655876A GB 655876 A GB655876 A GB 655876A GB 34075/47 A GB34075/47 A GB 34075/47A GB 3407547 A GB3407547 A GB 3407547A GB 655876 A GB655876 A GB 655876A
Authority
GB
United Kingdom
Prior art keywords
aerial
input impedance
changes
roadway
detector
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
Application number
GB34075/47A
Other languages
English (en)
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.)
Siemens Schweiz AG
Albiswerk Zuerich AG
Original Assignee
Siemens Albis AG
Albiswerk Zuerich AG
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 Siemens Albis AG, Albiswerk Zuerich AG filed Critical Siemens Albis AG
Publication of GB655876A publication Critical patent/GB655876A/en
Expired 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
    • G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
GB34075/47A 1946-09-05 1947-12-23 Radio control system for traffic signals Expired GB655876A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH270146T 1946-09-05

Publications (1)

Publication Number Publication Date
GB655876A true GB655876A (en) 1951-08-08

Family

ID=33480351

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34075/47A Expired GB655876A (en) 1946-09-05 1947-12-23 Radio control system for traffic signals

Country Status (5)

Country Link
US (1) US2622140A (es)
BE (1) BE478044A (es)
CH (1) CH270146A (es)
FR (1) FR956864A (es)
GB (1) GB655876A (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2358269A (en) * 2000-01-11 2001-07-18 Roke Manor Research Vehicle detection

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965893A (en) * 1955-05-31 1960-12-20 Eastern Ind Inc Vehicle detector
US3056106A (en) * 1958-07-14 1962-09-25 Gamewell Co Infrared detectors
US3042303A (en) * 1959-04-24 1962-07-03 Gen Railway Signal Co Object or vehicle detection system
US3109157A (en) * 1959-06-15 1963-10-29 Gen Signal Corp Directional traffic control system
US3045909A (en) * 1959-06-15 1962-07-24 Gen Railway Signal Co Pulsed ultrasonic detector
US3042899A (en) * 1959-06-16 1962-07-03 Gen Railway Signal Co Ultrasonic vehicle detection system
US3110007A (en) * 1959-10-14 1963-11-05 Gen Signal Corp Ultrasonic vehicle detector
US3063179A (en) * 1959-10-16 1962-11-13 Gen Railway Signal Co Vehicle parking area gate control system
US3046519A (en) * 1959-10-28 1962-07-24 Gen Railway Signal Co Ultrasonic vehicle detection system
US3105953A (en) * 1960-01-25 1963-10-01 Gen Signal Corp Directional sonic vehicle detector
US3110008A (en) * 1960-05-09 1963-11-05 Gen Signal Corp Vehicle detection apparatus
US3176266A (en) * 1960-08-12 1965-03-30 Gen Signal Corp Vehicular traffic detection system
US3152315A (en) * 1961-01-27 1964-10-06 Lab For Electronics Inc Aircraft tracking and indicating system
US3278922A (en) * 1963-11-14 1966-10-11 Gen Electric Position and motion detector
US3663937A (en) * 1970-06-08 1972-05-16 Thiokol Chemical Corp Intersection ingress-egress automatic electronic traffic monitoring equipment
GB9107476D0 (en) * 1991-04-09 1991-05-22 Peek Traffic Ltd Improvements in vehicle detection systems
IT1395919B1 (it) * 2009-09-24 2012-11-02 Agla Elettronica S R L Sistema per rilevare automaticamente la presenza o assenza di oggetti in una predeterminata porzione di spazio da controllare, per esempio per rilevare i posti auto liberi o occupati in un parcheggio

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1658953A (en) * 1924-12-11 1928-02-14 Firm Of M J Goldberg Signaling apparatus
US1917243A (en) * 1929-09-13 1933-07-11 Paul S Edwards Ultra sensitive relay
US1898432A (en) * 1929-10-02 1933-02-21 Paul S Edwards Reactance controlled relay
US2031951A (en) * 1932-02-25 1936-02-25 Bell Telephone Labor Inc Burglar alarm system
US2238041A (en) * 1939-03-03 1941-04-15 Dickens Harry Power control system
US2290771A (en) * 1939-04-25 1942-07-21 Rca Corp Relay system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2358269A (en) * 2000-01-11 2001-07-18 Roke Manor Research Vehicle detection

Also Published As

Publication number Publication date
FR956864A (es) 1950-02-09
US2622140A (en) 1952-12-16
BE478044A (es) 1948-01-31
CH270146A (de) 1950-08-15

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