workzonesafety.org - Downstream Effects of Speed Photo–Radar Enforcement and Other Speed Reduction Treatments on Work Zones - Comments http://www.workzonesafety.org/research/record/9985 Comments for "Downstream Effects of Speed Photo–Radar Enforcement and Other Speed Reduction Treatments on Work Zones" en Downstream Effects of Speed Photo–Radar Enforcement and Other Speed Reduction Treatments on Work Zones http://www.workzonesafety.org/research/record/9985 http://www.workzonesafety.org/research/record/9985#comment Books and Reports Law Enforcement Photo Enforcement Speed Control Speeding Temporary Traffic Control Mon, 26 Oct 2009 11:41:06 -0500 j-whipple1 9985 at http://www.workzonesafety.org