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Appendix C - Analytical Tools for Corridor Analysis
Pages 51-56

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From page 51...
... These techniques are cost effective but may not provide sufficiently corridor specific or detailed evaluation measures for use as the sole basis for corridor comparison and prioritization. • With the possible exception of statewide traffic forecasting models, none of the currently used tools deal with intermodal issues.
From page 52...
... 52 A Guidebook for Corridor-Based Statewide Transportation Planning Analytical Tool Usage 0 2 4 6 8 10 12 Statewide Demand Model Safety/Accident Analysis REMI Project Scoring Model Pavement Management Mobile 6 HPMS Highway Adequacy Model HERS GIS Current LOS Bridge Condition Benefit/Cost Analysis Number of States Figure C-1. Planning tools.
From page 53...
... Statewide Models Statewide travel-demand models are the most frequently used tool for corridor study applications. While the survey only reported 10 states using statewide models, NCHRP Synthesis of Highway Practice 358: Statewide Travel Forecasting Models reported that 26 states have developed a statewide model and that corridor studies are the most common application of this tool.
From page 54...
... 54 A Guidebook for Corridor-Based Statewide Transportation Planning Figure C-2. Corridor analysis options.
From page 55...
... These may include • Traffic growth and roadway LOS, • Pavement deterioration impacts and maintenance cost estimation, • Improvement cost estimation, • User benefit estimation, • Roadway deficiency analysis, and • Benefit/cost ratio estimation and ranking. The HERS user may also conduct analyses focused on particular corridors or regions.
From page 56...
... Emerging Tool: National Travel-Demand Model Scoping work has begun on a national model under the auspices of NCHRP Project 8-36/ Task 70, "Scoping Study for Statewide Travel Forecasting National Model." The objective of this research is to carry out a scoping study to estimate potential usefulness, scope, purposes, costs, and administration of a national travel-forecasting model that can assist states in estimating external trips. Although just the first phase of this study is underway, the national model will be very useful in providing uniform traffic flows from state to state as well as provide a large building block for developing a statewide model.


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