ITS Benefits >> Speed photo-radar enforcement decreased average car speeds in work zones up to 7.9 mi/hr in median lanes and 7.7 mi/hr in shoulder lanes at highway work zones, being equally as effective as the presence of police patrols with emergency lights off.

Oct 2, 2013 | Policy News

Speed Photo-Radar Enforcement Evaluation in Illinois Work Zones (January 2010) ITS Benefits Database http://www.itsbenefits.its.dot.gov

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ITS Benefits >> Speed photo-radar enforcement decreased average car speeds in work zones up to 7.9 mi/hr in median lanes and 7.7 mi/hr in shoulder lanes at highway work zones, being equally as effective as the presence of police patrols with emergency lights off.

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