CROSSING PROTECTION AT LOW COST
THE MILWAUKEE ROAD, WORKING WITH THE SERVO CORPORATION OF AMERICA, HAS DEVELOPED AN AUTOMATIC RAILROAD CROSSING PROTECTION SYSTEM DESIGNED TO PROVIDE A MAXIMUM OF PROTECTION AT MINIMUM COST, IN SLOW-SPEED SWITCHING AREAS. THE MILWAUKEE YARD IN MADISON, WISCONSIN, IS CITED AS A TYPICAL EXAMPLE OF WHAT CAN BE ACCOMPLISHED WITH THE SYSTEM. THE NEW CONTROLS WILL RETURN THEIR ORIGINAL COST IN ABOUT TWO YEARS. TRANSDUCERS SENSE THE MOVEMENT OF ENGINES, RAILROAD CARS OR TRAINS AND IN CONJUNCTION WITH ASSOCIATED EQUIPMENT, DETERMINES THE DIRECTION OF MOVEMENT, PROVIDES TIMING, AND ACTUATES CROSSING CONTROLS TO PERMIT THE MOVEMENT OF VEHICULAR TRAFFIC DURING ALL SAFE PERIODS. AUDIO FREQUENCY OVERLAY CIRCUITS AT THE CROSSINGS CAUSE THE PROTECTION EQUIPMENT TO FUNCTION IF RAILROAD CARS OR LOCOMOTIVES OCCUPY THAT AREA. THIS CROSSING CONTROL SYSTEM WAS RECOMMENDED FOR LOW-SPEED, INDUSTRIAL SWITCHING AREAS WHERE TRAIN SPEEDS RANGE FROM 2 TO 25 MPH. TESTS HAVE INDICATED THAT THE EQUIPMENT IS RELIABLE AT SPEED UP TO 80 MPH. THE EQUIPMENT OPERATES EFFECTIVELY FROM -40 F TO 150 F.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/1586268
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Supplemental Notes:
- Vol 163, No 18, PP 30, 31, 37
- Publication Date: 1967-11-13
Media Info
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Serial:
- Railway Age
- Publisher: Simmons-Boardman Publishing Corporation
- ISSN: 0033-8826
- Serial URL: http://www.railwayage.com
Subject/Index Terms
- TRT Terms: Areas; Audio frequency; Economic benefits; Electric circuits; Engines; Equipment; Highway safety; Protection; Railroad cars; Railroad grade crossings; Railroad signals; Railroad trains; Sensors; Speed; Switching; Temperature; Traffic signal control systems; Transducers; Warning signs; Warning systems
- Old TRIS Terms: Circuits
- Subject Areas: Economics; Highways; Railroads; Safety and Human Factors; Security and Emergencies; Vehicles and Equipment;
Filing Info
- Accession Number: 00219944
- Record Type: Publication
- Files: TRIS
- Created Date: Feb 6 1994 12:00AM