Improving ADA Paratransit Demand Estimation: Regional Modeling (2012) / Chapter Skim
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1 C h a p t e r 1 The Americans with Disabilities Act of 1990 (ADA) created a requirement for ADAcomplementary paratransit service for all public transit agencies that provide fixed-route transit service.
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2 Improving aDa paratransit Demand estimation: regional Modeling Phase II Research Compared to the TCRP Report 119 tools, the models developed in this research are intended to permit more detailed forecasts and to deepen understanding of the travel behavior of ADA paratransit-eligible people. Two models were produced: • A sketch planning model, which allows a planner to enter a small number of variables by means of a spreadsheet interface and explore how these variables affect predicted trip-making on ADA paratransit and other modes in the Dallas-Fort Worth area.
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Summary 3 and walking or going by wheelchair. For each trip, respondents provided trip purpose, mode of travel, trip duration, and exact point of origin and destination.
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4 Improving aDa paratransit Demand estimation: regional Modeling Trips per person registered for ADA paratransit would decline, which corresponds with the experience of ADA paratransit operators that older people travel less than younger people, while the number of registered people would increase, which corresponds to the fact that older people are more likely to have disabilities than younger people. The drop in trips per registered person is much larger than the increase in registered persons, so a 10% increase in the senior population would create a 2.2% reduction in total ADA paratransit trips.
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Summary 5 of older people, including many women who have outlived their spouses and more women raising children alone. People who live alone may make more trips because they cannot delegate activities to others.
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6 Improving aDa paratransit Demand estimation: regional Modeling Sensitivity to Travel Time Travel times on ADA paratransit are typically much longer than times for similar trips by private car. ADA regulations4 prohibit "substantial numbers of trips with excessive trip lengths" but do not specify what is excessive.
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Summary 7 numbers of significantly untimely pick-ups," but in later interpretations FTA has been clear that timely drop-offs are also an important part of on-time performance.5 In the Stated Preference analysis that was part of the ADA paratransit user survey, half of respondents were asked to make tradeoffs involving late pick-ups and half were asked to make similar tradeoffs involving late drop-offs. The analysis found that a change of 5% in the frequency of late pick-ups was valued the same as a $1.06 fare change, but a change of 5% in the frequency of late drop-offs was valued the same as a $1.41 fare change.
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8 Improving aDa paratransit Demand estimation: regional Modeling Further Research and Development This is the first attempt to develop a disaggregate regional model of travel by ADA paratransiteligible individuals, so numerous unanswered questions and opportunities for further development remain. Disaggregate model of registration.
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Summary 9 the study area. This information is available in many large regional travel models.
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