These Guidelines describe how transit agencies, metropolitan planning organisations, and state DOTs can act today to initiate or expand their analytical tools for integrated land use transportation planning. The Guidelines are intended for the general reader having an interest in the effects of transit on land use. The Guidelines describe currently available integrated models, the characteristics of an "ideal" integrated model, and steps that a planning organisation should take in order to support and expand such modelling capability. A more detailed Final Report is available for the practitioner on the TCRP website. Although federal transportation policy, as reflected in the Intermodal Surface Transportation Efficiency Act of 1991 and the Transportation Equity Act for the 21st Century, places a high priority on considering land use in transportation planning, currently available models do not adequately simulate the effects of major transit investments on land use. The U.S. DOT, in conjunction with other federal agencies, undertook the Travel Model Improvement Program (TMIP) to improve the modelling capabilities of the transportation industry, but supporting research is still needed to ensure that the next generation of travel demand models simulates land use and transportation interactions more accurately, and, specifically, the effect of public transit access on land use. The objectives of TCRP Project H-12 were to define the effect of transit access on land use, evaluate the transit access component of current land use models, and augment the ongoing work of the U.S. DOT in the TMIP. In accomplishing these objectives, the University of Toronto, in association with DELCAN Corporation, developed the characteristics of an ideal integrated model and then reviewed six integrated land use transportation models against the features of the ideal. The authors estimate that there may be more than 20 such models available in the world of varying degrees of completeness and integration. The six chosen for review were selected because they are operational in a practical setting and include explicit treatment of prices in the land-development component of the model. These Guidelines summarise the attributes of an "ideal" integrated model and describe how an agency should proceed step by step to build its own integrated modelling capabilities. Six levels of modelling capability are described with a checklist of input and analytical requirements for each level. The Guidelines stress that, to expand capability, a plan is essential and that an incremental approach is most likely to be successful. Data collection is the first step. A good travel demand modelling capability is necessary before an agency should consider advancing to integrated models. A national research and development program for improving integrated land use and transportation models is outlined. The more detailed Final Report for this project is available on the TCRP website as Web Document 9 (www4.nas.edu/trb/crp.nsf). The Final Report contains a discussion of the relationship between public transportation and land use, a review of the six integrated transportation and land use models, and a review of how each model handles public transit. There is an extensive bibliography, and Appendix B describes the logic and equations for a logit-based land allocation model with endogenous price signals. In early 1999, the National Co-operative Highway Research Program published a related product—NCHRP Report 423A, "Land Use Impacts of Transportation: A Guidebook." This document reviews a range of quantitative and qualitative tools available to analyse land use transportation issues, describes case studies of applications, and includes a review of land use models. The report also describes the behavioural framework motivating key actors (e.g., households, developers, and local governments) on the urban scene, and concludes with step-by-step guidelines for conducting land use analysis. An integrated land use model, UrbanSim, will be available by mid 1999. More information on the UrbanSim model can be obtained on the Internet at http://urbansim.org. The NCHRP report may be ordered at the same address as TCRP products (see preceding page). (Author/publisher)
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