1. AASHTO (American Association of State Highway and Transportation Officials) (2004). A Policy on Geometric Design of Highways and Streets, Fourth Edition, Washington, D.C.
2. Carlson, P.J., J.D. Miles, and P. K. Johnson (2006). Daytime High-Speed Passing Maneuvers Observed on Rural Two-Lane, Two-Way Highways: Findings and Implications. Transportation Research Record, Journal of the Transportation Research Board, No 1961, Transportation Research Board of the National Academies, Washington, D.C., pp. 9-15.
3. Catbagan, Jerome L. and Hideki Nakamura (2008). Probability-Based Follower Identification in Two-Lane Highways. Transportation Research Record, Journal of the Transportation Research Board, No. 2088, National Research Council, Washington, D.C., pp. 218-226.
4. Delaware Department of Transportation (DelDOT) (2009). DelDOT Manual on Uniform Traffic Control Devices (MUTCD) – Part 3: Markings –Frequently Asked Questions. May 2009. http://www.deldot.gov/information/business/drc/manuals/deldot_mutcd_part_3_faq.pdf. Accessed Dec. 19, 2009.
5. Dixon, Michel P., Satya Sai Kumar Sarepali, and Kevin Allen Young (2006). Field Evaluation of Highway Capacity Manual 2000 Analysis Procedures for Two-Lane Highways. Transportation Research Record, Journal of the Transportation Research Board, No. 1802, TRB, National Research Council, Washington, D.C., pp. 125-132.