GB1431901A - Traffic control systems - Google Patents

Traffic control systems

Info

Publication number
GB1431901A
GB1431901A GB1195672A GB1195672A GB1431901A GB 1431901 A GB1431901 A GB 1431901A GB 1195672 A GB1195672 A GB 1195672A GB 1195672 A GB1195672 A GB 1195672A GB 1431901 A GB1431901 A GB 1431901A
Authority
GB
United Kingdom
Prior art keywords
store
traffic
signals
sets
frequency
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
GB1195672A
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB1195672A priority Critical patent/GB1431901A/en
Publication of GB1431901A publication Critical patent/GB1431901A/en
Priority to HK28477A priority patent/HK28477A/en
Priority to MY7700286A priority patent/MY7700286A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/07—Controlling traffic signals
    • G08G1/081—Plural intersections under common control
    • G08G1/082—Controlling the time between beginning of the same phase of a cycle at adjacent intersections

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuits Of Receivers In General (AREA)
  • Traffic Control Systems (AREA)

Abstract

1431901 Road-traffic signals PLESSEY CO Ltd 15 June 1973 [15 March 1972] 11956/72 Heading G4Q In a traffic signal control system wherein sets of traffic signals are controlled according to one or more predetermined plans, the system comprises an integrated circuit store at each of two or more sets of signals and it is arranged that each store operates in synchronism with the frequency of an electrical mains supply. Each store may be a re-circulating shift register store or a random access store. A crystal-controlled oscillator may be added to compensate for missing or additional pulses from a generator synchronized to the mains frequency when the pulse repetition frequency falls outside predetermined limits. A "green wave" may be arranged. Information words and time settings provide for (a) each intersection incorporating a filter lane and (b) plans for different traffic conditions, e.g. "off-peak".
GB1195672A 1972-03-15 1972-03-15 Traffic control systems Expired GB1431901A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1195672A GB1431901A (en) 1972-03-15 1972-03-15 Traffic control systems
HK28477A HK28477A (en) 1972-03-15 1977-06-09 Improvements in or relating to traffic control systems
MY7700286A MY7700286A (en) 1972-03-15 1977-12-31 Improvements in or relating to traffic control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1195672A GB1431901A (en) 1972-03-15 1972-03-15 Traffic control systems

Publications (1)

Publication Number Publication Date
GB1431901A true GB1431901A (en) 1976-04-14

Family

ID=9995742

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1195672A Expired GB1431901A (en) 1972-03-15 1972-03-15 Traffic control systems

Country Status (3)

Country Link
GB (1) GB1431901A (en)
HK (1) HK28477A (en)
MY (1) MY7700286A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014059247A1 (en) * 2012-10-12 2014-04-17 GE Lighting Solutions, LLC Led traffic lamp control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014059247A1 (en) * 2012-10-12 2014-04-17 GE Lighting Solutions, LLC Led traffic lamp control system
US9721467B2 (en) 2012-10-12 2017-08-01 GE Lighting Solutions, LLC LED traffic lamp control system

Also Published As

Publication number Publication date
HK28477A (en) 1977-06-17
MY7700286A (en) 1977-12-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee