1. Urban transportation and equity: a case study of Beijing and Karachi;Ahmed;Transport. Res. Part A: Policy Practice,2008
2. Vulnerable populations: who are they?;AJMC;Am. J. Managed Care,2006
3. Public policy implications of harmonizing engineering technology with socio-economic modeling: application to transportation infrastructure management;Andrijcic;Transport. Res. Part A: Policy Practice,2013
4. Some theoretical aspects of road traffic research;Wardrop;Proc. Inst. Civ. Eng.,1952
5. ASCE, 2017. American Society of Civil Engineers (ASCE) 2017 “Infrastructure Report Card” [online]: https://www.infrastructurereportcard.org/wp-content/uploads/2016/10/2017-Infrastructure-Report-Card.pdf (accessed 5/2/18).