1. A Policy on Geometric Design of Highways and Streets. AASHTO, Washington, D.C., 2004.
2. Geometric Design Guide for Canadian Roads. Transportation Association of Canada. Ottawa, Ontario, Canada, 1999.
3. A Policy on Geometric Design of Highways and Streets. AASHTO, Washington, D.C., 1994.
4. Guide for Design of Pavement Structures. AASHTO, Washington, D.C., 1993.