Examination of Road Traffic Data and Demand Estimation Methods with the view to estimating the Amount of Environmental Loads

Abstract

Most of the estimation methods of transport related environmental loads are the applications of those existing transport demand estimation methods. Conversely, this paper is aimed to examine the problems with road traffic data and the demand estimation methods with the view to estimating environmental loads. The existing methods are classified, while their characteristics and ranges of applications are also showed. A test calculation included, the main problems that are related to 1) grasping the amount of environmental loads, 2) using average travel speed as an index of traffic conditions, and 3) using traffic flow simulation are examined.