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  USA  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

Filing Info

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