Transportation Impact Statement: a New Tool for Joint Land Use Transportation Planning
SHIFTAN Y, BEN-ELlA E and SHEFER D, Technion, Israel
This paper advances a new approach to transportation and land-use planning: the Transportation Impact Statement (TIS). Current planning practice suffers from a lack of understanding and tools to evaluate the complex relationships between land use and tran
This paper advances a new approach to transportation and land-use planning: the Transportation Impact Statement (TIS). Current planning practice suffers from a lack of understanding and tools to evaluate the complex relationships between land use and transportation. Consequently, land-use development frequently overloads the transportation system. TIS exposes the complex interdependencies through a multi- modal and regional assessment of the impact of land-use development on the transportation system. The paper offers a theoretical background for this new approach and an empirical illustration of its potential use through a case study based on the city of Haifa in Israel. The objective of the study is to investigate the local and regional transport related impacts of proposed developments thus guiding the planning decision making process. The impact of the proposed land use developments on the transportation system was studied under several transportation scenarios including travel demand management strategies, using the metropolitan data base and travel demand modeling system. The results show that the total amount of trips generated by the proposed developments is by far inconsistent with the transportation network's capabilities to accommodate forecasted demand under all transport scenarios, including travel demand management measures. Excess demand on the road network was estimated, for all scenarios, by using a novel" procedure of user identification on congested links. There are a number of key implications to the results. First, TIS clearly extends our understanding of land use development on the transportation system and should be used for decision making regarding development approving. Second, TIS stresses the importance of transit and TDM strategies in the planning process as mitigation measures. Third, TIS illustrates the need for of a wider (i.e. non-site) planning perspective - including overall metropolitan planning goals and objectives.
Association for European Transport