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TPO begins scoping travel‑demand model update; household survey needs 2,000 more responses
Summary
Staff outlined scoping work for a major travel‑demand model update, discussed tradeoffs in model resolution and run time, and reported the household-travel survey is behind target with about 1,000 recruited and a 3,000-sample goal.
The Knoxville Regional Transportation Planning Organization moved forward on June 23 with scoping for a major update to its travel‑demand model and described the household-travel survey that will feed the update. Staff said the model currently validated to a 2022 base year needs a substantive update and that the MPO will issue a request for proposals once scoping, costs and data needs are finalized.
“It's a mathematical representation of travel demand and supply to help us try to plan for the future,” Mike, the TPO technical presenter, said when describing the region’s travel‑demand model and the reasons for an update. Staff explained the model is a hybrid between a traditional four‑step model and more advanced activity‑based models; the update will trade off model spatial resolution, run time and cost. Staff told the board the study area includes 10 counties (to be reconsidered where Sevier…
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