Driving while suspended by individuals who have been convicted of an i
mpaired driving offense is a significant highway safety problem. Such
offenders present four times the risk of involvement in a fatal crash
at a blood alcohol concentration (BAC) over 0.10. A previous report by
the authors demonstrated that a vehicle immobilization program in Fra
nklin County (Columbus), Ohio, significantly reduced driving-under-the
-influence (DUI) recidivism rates for multiple DUI offenders. This stu
dy evaluated a somewhat different application of the same law in Hamil
ton County (Cincinnati), Ohio, where vehicles were impounded rather th
an immobilized, and obtained similar results-a reduction in repeat DUI
offenses by multiple offenders both while their vehicles were being h
eld by the police and after they were returned to the offenders. (C) 1
998 Elsevier Science Ltd. All rights reserved.