1. Manual of Uniform Traffic Control Devices of Canada;Council on Uniform Traffic Control Devices for Canada,1985
2. A new and improved model of passing sight distances on two-lane highways;Glennon,1988
3. Model for calculating safe passing distances on two-lane rural roads;Lieberman;Transpn. Res. Record,1982
4. Manual of Geometric Design Standards for Canadian Roads;Roads and Transportation Association of Canada,1986