1. Akçelik, R., 2011. An assessment of the Highway Capacity Manual 2010 roundabout capacity model. TRB International Roundabout Conference, May.
2. Andrey, J.C., Mills, B.E., Vandermolen, J., 2001. Weather information and road safety.
3. lme4: Linear mixed-effects models using Eigen and S4;Bates;R package version,2014
4. Traffic congestion and greenhouse gases;Barth;Access Magaz.,2009
5. To illuminate or not to illuminate: roadway lighting as it affects traffic safety at intersections;Bullough;Acc. Anal. Prevent.,2013