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Sustainable transportation infrastructure investments and mode share changes: A 20-year background of Boulder, Colorado

机译：可持续交通基础设施投资和方式份额变化：科罗拉多州博尔德市成立20年

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This case study examines transportation infrastructure investments along with data revealing mode share in order to highlight correlations between investments in sustainable transportation infrastructure ('supply') and patterns of non-automobile mode share ('demand'). The analysis assesses data from Boulder, Colorado, a city that has made substantial efforts to improve its multi-modal transportation infrastructure and services by investing in pedestrian, bicycle, and transit infrastructure and services. We aim to describe connections between supply and demand by measuring two phenomena: the extent of transportation infrastructure investments supporting pedestrian, bicycle, and transit modes made between 1990 and 2009 and the share of these modes during the same 20 years period. Results illustrate an overall increase in transit and bicycle mode share and a decrease in single occupancy vehicle share, with consistent pedestrian share. We conclude that Boulder's investments in improving mode choices through new infrastructure and services supporting non-automobile modes are associated with increasing share of non-automobile modes. This is despite national trends that indicate an increasing automobile mode share. Regardless of the reasons for the positive trends experienced in Boulder, the presence of robust pedestrian, bicycling, and transit infrastructure has clearly coincided with evolving travel preferences. Boulder therefore serves as an example for other cities desiring to focus on developing policies and infrastructure that expand the availability of non-automobile modes. (C) 2014 Elsevier Ltd. All rights reserved.
机译：本案例研究研究了交通基础设施投资以及数据揭示模式份额，以突出可持续交通基础设施投资（“供应”）与非汽车模式份额（“需求”）之间的相关性。该分析评估了科罗拉多州博尔德市的数据，该市已经做出了巨大的努力，通过投资于行人，自行车和公交基础设施和服务来改善其多式联运基础设施和服务。我们旨在通过测量两种现象来描述供需之间的联系：1990年至2009年间支持行人，自行车和公交方式的交通基础设施投资的规模，以及在相同的20年期间这些方式所占的份额。结果表明，在交通和自行车模式份额总体增加的情况下，单人车辆份额有所下降，而行人份额保持不变。我们得出的结论是，博尔德通过支持非汽车模式的新基础设施和服务来改善模式选择的投资与非汽车模式份额的增加有关。尽管有国家趋势表明汽车模式所占份额在增加，但这仍然存在。无论博尔德出现积极趋势的原因是什么，健壮的行人，自行车和公交基础设施的存在显然与不断发展的出行偏好相吻合。因此，博尔德（Boulder）成为其他希望集中精力制定政策和基础设施以扩大非汽车模式可用性的城市的榜样。 （C）2014 Elsevier Ltd.保留所有权利。

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