Improving Our Understanding of How Highway Congestion and Pricing Affect Travel Demand (2012) / Chapter Skim
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Pages 32-37
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From page 32... ...
32 C h a p t e r 2 This chapter describes the main data sources selected and used for the estimation of models that are described in detail in Chapter 3. To support the specification and estimation of advanced modeling components in C04, the team required certain types of information that are typically not available, but that were needed to overcome certain critical data issues surrounding the joint analysis of congestion and pricing.
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33 et al.
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34 A sample SP scenario is shown in Figure 2.1. Each scenario included four choice alternatives: • Travel on a free route outside peak periods; • Travel on a tolled route outside peak periods; • Travel on a free route during peak periods; and • Travel on a tolled route during peak periods.
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35 because in the context of cordon pricing, that would mean not traveling to downtown San Francisco at all. (Additional survey questions about that possibility were asked, but they were not analyzed as part of the C04 project.)
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36 follow-on question was included to ask if the person would travel before or after the peak. So, there were effectively seven choice alternatives: • Use the express lane during the peak period; • Use the express lane before the peak period; • Use the express lane after the peak period; • Use the existing free lanes during the peak period; • Use the existing free lanes before the peak period; • Use the existing free lanes after the peak period; and • Use a new bus service via the express lane (in any period)
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37 drove on one of the priced highway links, the distance was recorded by the GPS unit, and the user charge was displayed on a taxi meter–like device in the vehicle and deducted from the household's remaining budget. The household could keep any budget remaining at the end of the pricing period.
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