抄録
Transportation impact assessment for large-scale development project has recently become a requirement. Such assessment has to make some important considerations: accumulation effects of projects in a certain area, characteristics of transportation activities and appropriateness of the trip generation rate. This paper analyzes the effects of the above factors on the transportation demand forecast for the Tokyo Waterfront Subcenter. The finding are: 1) Accumulation of such projects changes modal split. 2) Transportation impact is not only limited to the project area but goes beyond the project boundaries. 3) Transportation impact may be underestimated depending on the chosen trip generation rate.
