FR706839A - Improvements to optical signaling devices for traffic regulation - Google Patents

Improvements to optical signaling devices for traffic regulation

Info

Publication number
FR706839A
FR706839A FR706839DA FR706839A FR 706839 A FR706839 A FR 706839A FR 706839D A FR706839D A FR 706839DA FR 706839 A FR706839 A FR 706839A
Authority
FR
France
Prior art keywords
traffic regulation
signaling devices
optical signaling
optical
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
John Roger Haynes
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 FR706839A publication Critical patent/FR706839A/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
    • G08G1/085—Controlling traffic signals using a free-running cyclic timer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR706839D 1929-12-04 1930-12-02 Improvements to optical signaling devices for traffic regulation Expired FR706839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB706839X 1929-12-04

Publications (1)

Publication Number Publication Date
FR706839A true FR706839A (en) 1931-06-30

Family

ID=10494099

Family Applications (1)

Application Number Title Priority Date Filing Date
FR706839D Expired FR706839A (en) 1929-12-04 1930-12-02 Improvements to optical signaling devices for traffic regulation

Country Status (2)

Country Link
BE (1) BE378661A (en)
FR (1) FR706839A (en)

Also Published As

Publication number Publication date
BE378661A (en)

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