@article{ref1,
title="Detection of impaired drivers through measurement of speed and alignment",
journal="Proceedings International Council on Alcohol, Drugs and Traffic Safety Conference",
year="1981",
author="Bragg, Barry W. E. and Dawson, N. and Kirby, D. and Goodfellow, G.",
volume="1981",
number="",
pages="1341-1353",
abstract="This study deals with roadside survey of impaired drivers. 460 drivers who passed through the observation sites were stopped and breath-tested. These drivers were selected randomly from the traffic flow once an interviewer was available. BAC and speed/alignment data were obtained, the latter being measured by a pneumatic tube device. The device has two parallel pneumatic tubes perpendicular to the traffic flow for the measurement of speed and two tubes aligned in a &quot;V&quot; pattern for the measurement of lateral placement. 32 (7%) of the drivers were legally impaired (80 mg% or greater), 28 (6,1%) had a BAC between 50 and 70 mg% and 400 (86,9%) had a BAC less than 49 mg%. (Author/TRRL)<p />",
language="",
issn="",
doi="",
url="http://dx.doi.org/"
}