Spatial Allocation Effects of Forecast Land Uses on Statewide Mobile Source Emissions

Transportation planners and engineers in the travel demand forecasting industry have developed and applied models using the four-step process for approximately forty years. These models have been widely supported and have supplied many traffic forecasts for regional, corridor, and community planning efforts. They also have been used to examine statewide travel demand issues such as congestion management and the long-range effects of forecast land development as related to capacity sufficiency. Further, since the 1990 Clean Air Act Amendments, these types of models have been used to estimate mobile source emissions supporting transportation conformity analyses.