%0 Journal Article
%T Detection of impaired drivers through measurement of speed and alignment
%J Proceedings International Council on Alcohol, Drugs and Traffic Safety Conference
%D 1981
%A Bragg, Barry W. E.
%A Dawson, N.
%A Kirby, D.
%A Goodfellow, G.
%V 1981
%N 
%P 1341-1353
%X 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 "V" 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 />
%G 
%I International Council on Alcohol, Drugs and Traffic Safety
%@ 
%U http://dx.doi.org/