1. Speed Photo–Radar Enforcement and Its Effects on Speed in Work Zones
2. Brewer MA, Pesti G, Schneider WH. 2005. Identification and testing of measures to improve work zone speed limit compliance, Publication FHWA/TX-06/0-4707-1, FHWA, US Department of Transportation.
3. Chin SM, Franzese O, Greene DL, Hwang HL, Gibson RC. 2002. Temporary losses of highway capacity and impacts on performance, Publication No. ORNL/TM-2002/3, Oak Ridge National Laboratory, US Department of Energy.
4. FHWA. 2009. Manual on uniform traffic control devices for streets and highways, US Department of Transportation, Washington, D.C. §6C.01.