Drug Free Zones in Portland, OR: Situational Crime Prevention or Something Else?

Jennifer B. Robinson, University of Ottawa

The effects of the drug free zones in Portland, Oregon, as an example of a situational crime prevention measure, upon rates and locations of concentrations of drug sales are examined from 1990 through 1998. A combination of techniques are used to describe the spatial and temporal variation in drug sales patterns in the City of Portland, while controlling for block level characteristics and police officer allocation over time, including a growth curve multi-level model and location quotients. This research focuses on policy questions concerning the nature of the drug free zone legislation in light of the finding of the non-significant effect of the drug free zones on numbers of drug sales arrests in Portland's block groups.

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Updated 05/20/2006