1. The Geography of Transportation System;Rodrigue,2013
2. Decomposing the decoupling of Danish road freight traffic growth and economic growth
3. Introduction to highway engineering and traffic analysis;Mannering,2012
4. The role of road transportation in local economic development: A focus on Nigeria transportation system;Olamigoke;Dev. Ctry. Stud.,2013
5. 21st Annual Report on the Performance of State Highway Systems (1984–2012);Hartgen,2014