摘要: |
Indicators are an increasingly popular way to present information about a community, region or agency. As is true for most statistical measures, indicators are descriptive by their nature. This report focuses primarily on sustainable transportation indicators (STI). Despite the proliferation of indicators-and the proliferation of interest in indicators-there have been only very few and scattered attempts to develop comprehensive sustainability indicators for transportation systems. None have been built from the measures and indicators already collected by local and regional transportation agencies in California. This research addresses that gap, devising and testing sustainable transportation indicators that may be effective and practicable in California. In so doing, it builds on both recent research and practice in the U.S., Canada and Europe. In addition to an extensive review of the literature, a two-stage survey of transportation professionals and several case studies (three in California plus one of Switzerland) are used to assess the current status of sustainable transportation indicators. |