In this research, an integrated gravity-based model was built, and a scenario analysis was conducted to project the demand levels for routes related to the highway projects suggested in TINA-Turkey. The gravity-based model was used to perform a disaggregated analysis to estimate the demand...

Substantial resources are devoted to infrastructure investment planning. However, considerable distance remains between planning outcomes on the one hand and policy decisions and implementation on the other. This paper looks at the reasons for this difference form the perspective of the...