Evaluation of SPIDRE Impaired Driving Enforcement Program

The University of Maryland (UMD) in partnership with the University of Maryland Baltimore (UMB), and the National Opinion Research Center (NORC) will conduct an evaluation of the State Police Impaired Driving Reduction Effort (SPIDRE). This special team of seven officers has been active in Prince George's County, Montgomery County and Baltimore County and has already made numerous traffic stops and driving-under-the-influence (DUI) arrests averaging 100 DUI arrests per year each. This differential intervention across counties in Maryland allows UMD and NORC to take advantage of a natural quasi-experimental design (intervention vs. comparison group), allowing us greater ability to determine whether these increased DUI enforcement efforts are reducing impaired driving.