INDUCTIVE LOOP VEHICLE DETECTOR: INSTALLATION ACCEPTANCE CRITERIA AND MAINTENANCE TECHNIQUES (ABRIDGMENT)

This paper represents only one step in relieving the pressures of design and maintenance in the field of vehicle detection. The emphasis is placed on enabling the traffic engineer to predict during the design phase whether the system will work with available loop detector amplifiers. Emphasis is also on outlining an exact method of evaluating the sensitivity of a loop and lead in system before the loop detector amplifier is attached to the system. Installation acceptance testing, which includes the measurement of loop resistance, insulation resistance, and inductance, should also include a test for the sensitivity of the loop and lead in system to a standard vehicle or vehicle model. Information on maintenance techniques describes a loop - oscillater, frequency - counter test device and gives procedures and data so that the device can be used to enhance maintenance capability.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/597/597-006.pdf
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=INDUCTIVE+LOOP+VEHICLE+DETECTOR%3a+INSTALLATION+ACCEPTANCE+CRITERIA+AND+MAINTENANCE+TECHNIQUES+(ABRIDGMENT)&author=J.+Ingram&publication_year=1976
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Sponsored by the California Department of Transportation T-0171. Publication of this paper sponsored by Committee on Traffic Control Devices. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Ingram, James W
• Publication Date: 1976

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: p. 36-37
• Monograph Title: Traffic control: signals and other devices
• Serial:
  • Transportation Research Record
  • Issue Number: 597
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Acceptance tests; Design; Electric insulating materials; Inductance; Loop detectors; Maintenance practices; Mathematical models; Vehicle detectors
• Uncontrolled Terms: Models
• Old TRIS Terms: Insulation resistance
• Subject Areas: Design; Highways; Maintenance and Preservation; Operations and Traffic Management;

Filing Info

• Accession Number: 00149219
• Record Type: Publication
• ISBN: 0309025664
• Report/Paper Numbers: FCP 42l1024
• Contract Numbers: C-1-12
• Files: TRIS, TRB
• Created Date: Mar 30 1977 12:00AM