Calibration of Speed Enforcement Down-The-Road Radars

We examine the measurement uncertainty associated with different methods of calibrating the ubiquitous down-the-road (DTR) radar used in speed enforcement. These calibration methods include the use of audio frequency sources, tuning forks, a fifth wheel attached to the rear of the vehicle with the r...

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Bibliographic Details
Published inJournal of research of the National Institute of Standards and Technology Vol. 114; no. 3; pp. 137 - 148
Main Authors Jendzurski, John, Paulter, Nicholas G
Format Journal Article
LanguageEnglish
Published United States National Institute of Standards and Technology 01.05.2009
Superintendent of Documents
[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
Subjects
Calibration
Law enforcement
Maintenance and repair
Measurement
Methods
Radar
Radar systems
Speed
Traffic violations
United States
radar
down the road radar
uncertainty
calibration
DTR radar
traffic radar
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Summary:We examine the measurement uncertainty associated with different methods of calibrating the ubiquitous down-the-road (DTR) radar used in speed enforcement. These calibration methods include the use of audio frequency sources, tuning forks, a fifth wheel attached to the rear of the vehicle with the radar unit, and the speedometer of the vehicle. We also provide an analysis showing the effect of calibration uncertainty on DTR-radar speed measurement uncertainty.
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Guest Researcher, Office of Law Enforcement Standards, Electronics and Electrical Engineering Laboratory, National Institute of Standards and Technology, U.S. Department of Commerce.
Office of Law Enforcement Standards, Electronics and Electrical Engineering Laboratory, U.S. Department of Commerce. Official contribution of the National Institute of Standards and Technology, not subject to copyright in the U.S.A.
ISSN:1044-677X
2165-7254
DOI:10.6028/jres.114.009