Abstract
This paper covers a unique Swedish transportation-planning tool called the Environmental Zone. The objective of the Environmental Zone is to curb and ameliorate air pollution from heavy traffic in sensitive urban environments. The aim has been to analyze the benefit of the Environmental through modeling the pollution emission in Stockholm Municipality. A review of the history of the Environmental Zone implementation processes, and the methodology used for evaluating their impacts was conducted through interviews with municipal authorities. Finally the paper is critical of the process leading to the implementation and evaluation done on the Environmental Zone, and provides recommendations for improvements. (Author/publisher).