BART'S HARDWARE--FROM BOLTS TO COMPUTERS
In 1965 BART began the Mt. Diablo Test Track. Three laboratory cars were built and used to test new technology. The testing program included reduction of sound and vibration, propulsion equipment and power supply, transit vehicle trucks, automatic train operation, rails and rail support, and aerial structures, tubes, and tunnels. Five propulsion system were tested, and dc chopper control was selected. The Rohr built transit cars, 250 of them, feature cantilever seat construction, noise suppression, air conditioning, and glare free lighting. The car trucks are equipped with derail detectors connected into the automatic train operation system. On aerial structures and in tunnels, rail is fastened directly to the concrete slab or tunnel invert. For the Berkeley Hills tunnel, which crosses the Hayward Fault, rails were mounted on timber ties to permit speedy realignment. The Trans Bay Tube contains both horizontal and vertical curvature. Fifty-seven prefabricated sections were floated into position, then sunk. The Trans Bay Tube terminates in a ventilation building at each end. Cathodic protection is used. Welded rail was used, and the second pour technique for concrete. BART purchases power at 34.5 kvac. This power system has seven sections. An I section steel third rail provides strength and the top running surface for overrunning pickup shoes. Aluminum inserts carry the current. A J shaped cover protects against accidental contact. Automatic train operation handles speed regulation, programmed station stops, and train door operation. Line supervision provides best possible service schedules. Train protection maintains the safety of the operation.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00189235
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Supplemental Notes:
- This article is the third of a series on BART. Refer to RRIS #041625 Section 23 for a note on special availability.
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Corporate Authors:
Institute of Electrical and Electronics Engineers (IEEE)
3 Park Avenue, 17th Floor
New York, NY United States 10016-5997 -
Authors:
- Friedlander, G D
- Publication Date: 1972-10
Media Info
- Features: Figures;
- Pagination: p. 60-72
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Serial:
- IEEE Spectrum
- Volume: 9
- Issue Number: 10
- Publisher: Institute of Electrical and Electronics Engineers (IEEE)
- ISSN: 0018-9235
Subject/Index Terms
- TRT Terms: Automatic train control; Cathodic protection; Communications; Data communications; Derailments; Detectors; Electric power transmission; Fastenings; Faults; Network analysis (Planning); Railroad electrification; Rapid transit; Rapid transit cars; Suspended structures; Test tracks; Third rail; Transportation; Transportation planning; Tunneling; Tunnels; Ventilation systems
- Identifier Terms: Berkeley Hills Tunnel; San Francisco Bay Area Rapid Transit District
- Old TRIS Terms: Aerial structures; Geological faults; Trans bay tube
- Subject Areas: Bridges and other structures; Operations and Traffic Management; Transportation (General);
Filing Info
- Accession Number: 00041623
- Record Type: Publication
- Source Agency: IEEE Spectrum
- Files: TRIS
- Created Date: Jun 15 1976 12:00AM