Long-Distance and Rural Travel Transferable Parameters for Statewide Travel Forecasting Models (2012) / Chapter Skim
Currently Skimming:
Pages 37-46
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 37... ...
37 This chapter of the Guidebook identifies alternate approaches and contexts to developing parameters that are more fully developed in later chapters. Although some of the suggestions in this chapter were not feasible to undertake in the final analysis for this study, these are still important considerations should additional analysis be warranted in the future, either at the national level or for the purposes of individual statewide model development efforts.
|
From page 38... ...
38 Long-Distance and rural travel transferable parameters for Statewide travel Forecasting Models • Available transportation modes; • Key employment types/industries; • Proximity to tourist destinations; and • Source of model parameter. Population density is a potential indicator of model transferability.
|
From page 39... ...
transferability and typologies 39 • Friction factors, gamma functions, or utilities for long-distance travel by trip purpose; • Auto occupancy rates for rural vehicle trips by trip purpose; and • Party size for long-distance trips by trip purpose. In addition to the transferable parameters itemized above, and the dynamics noted earlier in this chapter, reasonableness values are documented in later chapters for the following: • Percent of rural trips by purpose; • Percent of long-distance trips by trip purpose; • Average (mean)
|
From page 40... ...
40 Long-Distance and rural travel transferable parameters for Statewide travel Forecasting Models deal with person trips and starting with vehicle trips almost precludes a mode choice process, transferable parameters in this study are provided for person trips rather than vehicle trips. Long-distance trip-making was considered at 2–3 different thresholds to determine how parameters differ at each threshold.
|
From page 41... ...
transferability and typologies 41 annual statistics must be considered (including weekends and holidays) in analyzing longdistance trip-making.
|
From page 42... ...
42 Long-Distance and rural travel transferable parameters for Statewide travel Forecasting Models transferable parameters that have the widest applicability (e.g., Add-On states already have rural samples for their statewide models, so perhaps the audience for this report is more than likely the non-Add-On states)
|
From page 43... ...
transferability and typologies 43 "commuting zones" established by the U.S. Department of Agriculture (http://www.ers.usda.gov/ briefing/rurality/lmacz/)
|
From page 44... ...
44 Long-Distance and rural travel transferable parameters for Statewide travel Forecasting Models methods. This is the point at which it could be useful to conduct analyses with and without weekends and holidays.
|
From page 45... ...
transferability and typologies 45 Proximity to modal alternatives and urban areas impacts the quantity, trip purpose, and travel mode of rural and long-distance trips. The biggest problem with using modal proximity in a rural typology is that the NHTS and ATS do not include information on respondents' proximity to transportation modes.
|
From page 46... ...
46 Long-Distance and rural travel transferable parameters for Statewide travel Forecasting Models found that trip rates were not statistically different for households in different population sizes. Therefore the report presents urban trip generation data by different trip purposes.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.