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FR858450A - Improvements to automatic devices to regulate street traffic - Google Patents

Improvements to automatic devices to regulate street traffic

Info

Publication number
FR858450A
FR858450A FR858450DA FR858450A FR 858450 A FR858450 A FR 858450A FR 858450D A FR858450D A FR 858450DA FR 858450 A FR858450 A FR 858450A
Authority
FR
France
Prior art keywords
automatic devices
street traffic
regulate
regulate street
traffic
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
Other languages
French (fr)
Inventor
Lennox Clemens Walters
Herman Rosen
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 filed Critical
Application granted granted Critical
Publication of FR858450A publication Critical patent/FR858450A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/096—Arrangements for giving variable traffic instructions provided with indicators in which a mark progresses showing the time elapsed, e.g. of green phase

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR858450D 1939-07-28 1939-07-28 Improvements to automatic devices to regulate street traffic Expired FR858450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR858450T 1939-07-28

Publications (1)

Publication Number Publication Date
FR858450A true FR858450A (en) 1940-11-25

Family

ID=9329960

Family Applications (1)

Application Number Title Priority Date Filing Date
FR858450D Expired FR858450A (en) 1939-07-28 1939-07-28 Improvements to automatic devices to regulate street traffic

Country Status (1)

Country Link
FR (1) FR858450A (en)

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