OREGON NOW TESTS ALL STATE HIGHWAY SIGNAL CONTROLS

The testing program was initiated in an effort to minimize failures at turn on, reduce infantile failures, prolong in-service of equipment, and assure strict conformance to contract specifications. The construction is described of a test chamber, the installation of refrigeration equipment, and the construction of the control console. The console is divided into 4 sections, each section capable of testing one eight phase controller and containing pilot light indications on all signal circuits detector test switches, 30 Amp. variable transformer for voltage variation, volt-meter and sufficient switches to test all controller inputs. Output jacks are also included for timing tests, monitor testing and chart recorders. Telephone dials accurately introduce a selected number of vehicle calls when conducting added initial tests. Additional features include load detector amplifier testing and a digital vehicle and pedestrian actuation simulator. After operation of the test facility for a year it is concluded that a possible 92 percent failure reduction was achieved. A significant reduction in maintenance calls has also been noticed.

• Corporate Authors:

  International Municipal Signal Association

  P.O. Box 187
  San Juan Capistrano, CA  United States  92675
• Authors:
  • Judson, R
• Publication Date: 1975-9

Media Info

• Features: Photos;
• Pagination: p. 12-13
• Serial:
  • IMSA Signal Magazine
  • Volume: 11
  • Issue Number: 5
  • Publisher: International Municipal Signal Association

Subject/Index Terms

• TRT Terms: Amplifiers; Consoles; Equipment; Equipment maintenance; Failure; Loops (Control systems); Monitoring; Pedestrians; Signalization; Simulation; Specifications; State highways; Telephone; Testing; Training simulators; Voltmeters
• Uncontrolled Terms: Monitors; Timing
• Old TRIS Terms: Loops (Electrical)
• Subject Areas: Highways; Maintenance and Preservation; Operations and Traffic Management; Pedestrians and Bicyclists;

Filing Info

• Accession Number: 00128794
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 21 1976 12:00AM