Strategic Issues Facing Transportation, Volume 6: The Effects of Socio-Demographics on Future Travel Demand (2014) / Chapter Skim
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Pages 52-58
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From page 52... ...
52 7.1 Defining Key Indicators One of the fundamental uses of scenarios is that, if considered plausible, they can help policy makers and other decision makers anticipate and prepare for change. One of the key recommendations from transportation planning decision makers, the potential users of Impacts 2050, was that it would be useful to develop a way to monitor key trends in relation to each scenario.
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From page 53... ...
Key Indicators and Monitoring Approach 53 contingencies robust and resilient over more than one scenario? If not, can they be adapted to cope with the challenges in the scenarios?
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From page 54... ...
54 The Effects of Socio-Demographics on Future Travel Demand rated 3. This exercise establishes the degree of interconnectedness of all indicators.
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Key Indicators and Monitoring Approach 55 of other indicators, so this variable is highly influential on the other variables in the SD model and has an activity score of 26. On the other hand, the higher the passivity index, the more a variable is driven by other variables.
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From page 56... ...
56 The Effects of Socio-Demographics on Future Travel Demand 7.3 Monitoring Key Indicators or Early Warning Signs Economic growth is both a highly active and a highly passive scenario variable. So while it is a driver in the scenarios, it is not recommended as an early warning sign to be monitored.
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From page 57... ...
Key Indicators and Monitoring Approach 57 7.3.3 Transport Supply Indicators: Total Number of Lane Miles for Freeways, Arterials, Other Highways, and Transit It is assumed that state and local transportation agencies will have the necessary database to monitor this indicator. 7.3.4 Social and Policy Indicators: Attitudes Favoring Clean Energy and Environmental Protection and the Introduction of a Carbon Tax Ongoing national surveys provide insights into the trends in America's environmental attitudes, such as the Pew Research Center and Gallup.
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From page 58... ...
58 The Effects of Socio-Demographics on Future Travel Demand be progressively calibrated for successive years -- 2015, 2020, etc., which will refine the simulated long-term outcomes and allow for monitoring the indicators over time. Thus, transportation agencies that regularly use Impacts 2050 will in some way be "reinventing" it.
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