AU476361B2 - Failsafe railroad-highway grade crossing protection system - Google Patents

Failsafe railroad-highway grade crossing protection system

Info

Publication number
AU476361B2
AU476361B2 AU55737/73A AU5573773A AU476361B2 AU 476361 B2 AU476361 B2 AU 476361B2 AU 55737/73 A AU55737/73 A AU 55737/73A AU 5573773 A AU5573773 A AU 5573773A AU 476361 B2 AU476361 B2 AU 476361B2
Authority
AU
Australia
Prior art keywords
failsafe
railroad
protection system
grade crossing
crossing protection
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
AU55737/73A
Other versions
AU5573773A (en
Inventor
O. G. DARROW and THOMAS C. VAUGHN JOHN
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.)
Westinghouse Air Brake Co
Original Assignee
Westinghouse Air Brake Co
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 Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Publication of AU5573773A publication Critical patent/AU5573773A/en
Application granted granted Critical
Publication of AU476361B2 publication Critical patent/AU476361B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L29/00—Safety means for rail/road crossing traffic
    • B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
    • B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
    • B61L29/286—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated using conductor circuits controlled by the vehicle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
AU55737/73A 1972-09-07 1973-05-16 Failsafe railroad-highway grade crossing protection system Expired AU476361B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28687272A 1972-09-07 1972-09-07

Publications (2)

Publication Number Publication Date
AU5573773A AU5573773A (en) 1974-11-21
AU476361B2 true AU476361B2 (en) 1976-09-16

Family

ID=23100535

Family Applications (1)

Application Number Title Priority Date Filing Date
AU55737/73A Expired AU476361B2 (en) 1972-09-07 1973-05-16 Failsafe railroad-highway grade crossing protection system

Country Status (4)

Country Link
US (1) US3781541A (en)
AU (1) AU476361B2 (en)
CA (1) CA965863A (en)
IT (1) IT996636B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172576A (en) * 1977-06-21 1979-10-30 General Signal Corporation Highway crossing system with motion detecting apparatus
US4365777A (en) * 1979-08-17 1982-12-28 Modern Industries Signal Equipment, Inc. Train approach detector
GB8320509D0 (en) * 1983-07-29 1983-09-01 Westinghouse Brake & Signal Proving safe operation
US4893119A (en) * 1987-09-08 1990-01-09 Nasatka Barrier, Inc. Method and apparatus for operating a vehicle barricade
US5098044A (en) * 1989-12-22 1992-03-24 General Railway Signal Corporation Highway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipment
US5092544A (en) * 1989-12-22 1992-03-03 General Railway Signal Corp. Highway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipment
US5022613A (en) * 1990-04-26 1991-06-11 Safetran Systems Corporation AC and battery backup supply for a railroad crossing gate
US5459663A (en) * 1993-12-10 1995-10-17 Union Switch & Signal Inc. Cab signal apparatus and method
US7075427B1 (en) * 1996-01-12 2006-07-11 Eva Signal Corporation Traffic warning system
US6381506B1 (en) 1996-11-27 2002-04-30 Victor Grappone Fail-safe microprocessor-based control and monitoring of electrical devices

Also Published As

Publication number Publication date
IT996636B (en) 1975-12-10
US3781541A (en) 1973-12-25
AU5573773A (en) 1974-11-21
CA965863A (en) 1975-04-08

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