1. Roadside Design Guide;American Association of State Highway and Transportation Officials (AASHTO),2011
2. Unreported collisions with post-and-beam guardrails in Connecticut, Iowa, and North Carolina;Ray;Transp Res Rec,2001
3. Guidance on Treatment of the Economic Value of a Statistical Life (VSL) in U.S. Department of Transportation Analyses 2015 Adjustment. Special Memorandum to Secretarial Officers and Modal Administrators;Thomson,2011
4. Revised Departmental Guidance on Valuation of Travel Time in Economic Analyses;Trottenberg,2011