1. A Policy on geometric design of highways and streets . (1994). Am. Assn. of State Hwy. and Transp. Officials (AASHTO) Washington D.C.
2. Easa S. M. (1993). Should vehicle 15-percentile speed be used in railroad grade crossing design? ITE J. 36(8) 37–46.
3. Mason J. M. Jr. Fitzpatrick K. and Harwood D. W. (1989). “Intersection sight distance requirements for large trucks.” Transp. Res. Rec. 1208 Trans. Res. Board Nat. Res. Council Washington D.C. 47–58.
4. McGee H. W. Rizzo R. S. and Tustin B. (1984). Highway design and operations standards affected by vehicle characteristics . Rep. No. FHWA/RD-86 044 FHWA U.S. Dept. of Transp. Washington D.C.