1. Roess RP, Prassas ES, McShane WR (2004) Traffic engineering. Prentice Hall, Upper Saddle River
2. Chakroborty P, Das A (2003) Principles of transportation engineering. PHI Learning Pvt. Ltd, New Delhi
3. Garber N, Hoel L (2014) Traffic and highway engineering. Cengage Learning, Toronto
4. May AD (1990) Traffic flow fundamentals. Prentice Hall, Englewood Cliffs
5. Fruin JJ (1971) Pedestrian planning and design. Elevator World Inc., Ala., New York