Skip to main content


TRB’s Transit Cooperative Research Program (TCRP) Report 158: Improving ADA Paratransit Demand Estimation: Regional Modeling presents a sketch planning model and regional models designed to help metropolitan planning organizations and transit operators better estimate the probable future demand for Americans with Disability Act (ADA) complementary paratransit service, as well as predict travel by ADA paratransit-eligible individuals on all public transportation modes.

Both models permit more detailed forecasts and deeper understanding of the travel behavior of ADA paratransit-eligible people. All model parameters and coefficients are contained in the report and a fully implemented version is available on a CD-ROM that is included with the print version of the report.

The CD-ROM is also available for download from TRB’s website as an ISO image. Links to the ISO image and instructions for burning a CD-ROM from an ISO image are provided below.

Help on Burning an .ISO CD-ROM Image

Download the .ISO CD-ROM Image

(Warning: This is a large file and may take some time to download using a high-speed connection.)

CD-ROM Disclaimer - This software is offered as is, without warranty or promise of support of any kind either expressed or implied. Under no circumstance will the National Academy of Sciences or the Transportation Research Board (collectively "TRB") be liable for any loss or damage caused by the installation or operation of this product. TRB makes no representation or warranty of any kind, expressed or implied, in fact or in law, including without limitation, the warranty of merchantability or the warranty of fitness for a particular purpose, and shall not in any case be liable for any consequential or special damages.

Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2012. Improving ADA Paratransit Demand Estimation: Regional Modeling. Washington, DC: The National Academies Press.

Import this citation to:

Publication Info

96 pages |  8.5 x 11 |  Paperback
ISBN: 978-0-309-25838-8

What is skim?

The Chapter Skim search tool presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter. You may select key terms to highlight them within pages of each chapter.

loading iconLoading stats for Improving ADA Paratransit Demand Estimation: Regional Modeling...