Effects of land use on trip generation in urban areas : comparison between estimated trip generation rates and planning practices in Dar es Salaam, Tanzania

Abstract

In developing countries cities, the development of planned urban areas is associated with rapid changes in land uses. The number of vehicles trips generation in the planned area is related to the types, patterns and characteristics of land uses in that particular area. However, still it is unclear to what extent the change of land use affect trip generation rates in urban planned areas. This study has examined the effects of land use changes on trip generation rates for different residential land uses. A methodology for deriving trip generation rates for different residential land uses was developed. Additionally, the study made comparisons between vehicles trip generation rates provided in land use and transport planning manuals for local practitioners and rates obtained in the study area. Furthermore, the study identified the factors considered by planners and policy makers in order to reduce the effects of land use change in planned urban areas. This study therefore recommended the need of conducting site or city specific vehicle trip rates rather than adopting trip rates from different transport manuals.