CH223873A - Installation for traffic control at a crossroads. - Google Patents

Installation for traffic control at a crossroads.

Info

Publication number
CH223873A
CH223873A CH223873DA CH223873A CH 223873 A CH223873 A CH 223873A CH 223873D A CH223873D A CH 223873DA CH 223873 A CH223873 A CH 223873A
Authority
CH
Switzerland
Prior art keywords
crossroads
installation
traffic control
traffic
control
Prior art date
Application number
Other languages
French (fr)
Inventor
Bell Telephone Manufac Anonyme
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of CH223873A publication Critical patent/CH223873A/en

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
CH223873D 1938-06-04 1939-05-31 Installation for traffic control at a crossroads. CH223873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE223873X 1938-06-04

Publications (1)

Publication Number Publication Date
CH223873A true CH223873A (en) 1942-10-15

Family

ID=3866145

Family Applications (1)

Application Number Title Priority Date Filing Date
CH223873D CH223873A (en) 1938-06-04 1939-05-31 Installation for traffic control at a crossroads.

Country Status (5)

Country Link
US (1) US2300613A (en)
BE (1) BE428437A (en)
CH (1) CH223873A (en)
FR (1) FR855566A (en)
NL (1) NL57785C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521683A (en) * 1944-06-29 1950-09-12 Eastern Ind Inc Traffic detection apparatus
US3235738A (en) * 1962-05-14 1966-02-15 Sensi Tronics Inc Photoelectric apparatus for detecting objects in an area

Also Published As

Publication number Publication date
BE428437A (en)
US2300613A (en) 1942-11-03
FR855566A (en) 1940-05-15
NL57785C (en)

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