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The Oregon Statewide Model is an integrated model that focuses on forecasting the dynamic interaction between Oregon’s economy, land use, and transportation systems. To address the complexity and challenges associated with the dynamic interaction, the Statewide Model is made up of three sub models:
- Economic Model: determines the growth of the state’s economy,
- Location Model: allocates productions and transactions, and
- Transport Model: allocates trips to routes.
The model facilitates analysis of complex economic, land use, and transportation interactions and helps to answer policy and transportation issues that affect the State’s economy and transportation network. Some examples of modeling applications include:
- Modeling a new north-south freeway in Eastern Oregon to evaluate whether population and traffic growth would be diverted from the Willamette Valley to the east side of the state. Modeling revealed a new highway would not shift growth away from the Willamette Valley. This study was prompted by a legislative directive to ODOT to study the construction of such a freeway.
- Modeling the possible effects of a Newberg-Dundee bypass on inducing additional development in Yamhill County. The potential for induced growth resulting from the construction of the bypass has been a significant issue in the bypass planning process. The model was used successfully to evaluate the nature and general magnitude of induced growth effects. The results were very important to the land use exceptions process and subsequent court appeal.
- Modeling the economic effects of deteriorating bridges on the Oregon economy. The model was used to evaluate the economic effects of several approaches to the bridge problem, including no repairs and using load restrictions. Modeling revealed a program carefully staging the repairs of key bridges would provide 90% of the economic benefits of repairing all the bridges for nearly half the cost. This staging plan formed the basis of the Bridge Delivery Program funded by the Oregon Legislature.
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