00149219

Component

http://onlinepubs.trb.org...s/trr/1976/597/597-006.pdf

http://scholar.google.com...gram&publication_year=1976

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.

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.

01411453

FCP 42l1024

C-1-12

p. 36-37

1976

Transportation Research Record

0309025664

Digital/other

Figures (1) ; References (1) ; Tables (1)

Acceptance tests; Design; Electric insulating materials; Inductance; Loop detectors; Maintenance practices; Mathematical models; Vehicle detectors

Models

Design; Highways; Maintenance and Preservation; Operations and Traffic Management

TRIS, TRB

Mar 30 1977 12:00AM

• EVALUATION OF RAISED PAVEMENT MARKERS FOR REDUCING INCIDENCES OF WRONG-WAY DRIVING (ABRIDGMENT)
• GUIDELINES FOR APPLICATION OF SELECTED SIGNS AND MARKINGS ON LOW-VOLUME RURAL ROADS
• OPTIMAL CONTROL OF ISOLATED TRAFFIC SIGNALS (ABRIDGMENT)
• PLATOON DISPERSION CHARACTERISTICS ON ONE-WAY SIGNALIZED ARTERIALS (ABRIDGMENT)
• PROGRESSIVE SIGNAL SYSTEM IN A NETWORK OF ARTERIAL STREETS (ABRIDGMENT)
• SOME RESULTS ON GUIDELINES FOR TREATMENT OF THE TRAFFIC CONGESTION ON STREET NETWORKS
• SPEED REDUCTION IN SCHOOL ZONES (ABRIDGMENT)
• STABILITY OF OCCUPANCY-BASED LIBRARY TRAFFIC CONTROL SYSTEMS
• TRAFFIC-RESPONSIVE RAMP CONTROL THROUGH THE USE OF A MICROCOMPUTER (ABRIDGMENT)
• TRUCK BLOCKAGE OF SIGNALS