Sidewalks play a pivotal role in urban mobility of everyday life. Ideally, sidewalks provide a safe walkway for pedestrians, link public transportation facilities, and equip people with routing and navigation services. However, there is a scarcity of open sidewalk data, which not only impacts the accessibility and walkability of cities but also limits policymakers in generating insightful measures to improve the current state of pedestrian facilities. As one of the most famous crowdsourced data repositories, OpenStreetMap (OSM) could aid the lack of open sidewalk data to a large extent. However, completeness and quality of OSM data have long been a major issue. In this paper, we offer a preliminary study on the availability and trustworthiness of OSM sidewalk data. First, we compare OSM sidewalk data coverage in over 50 major cities in the United States. Then, we select three major cities (Seattle, Chicago, and New York City) to further analyze the completeness of sidewalk data and its features, and to compute a trustworthiness index leveraging historical OSM sidewalk data.
翻译：理想的情况是,人行道为行人提供安全的行走通道,连接公共交通设施,为人们提供路由和导航服务,然而,公开的人行道数据很少,不仅影响城市的无障碍和行走能力,而且限制决策者制定有见地的措施以改善行人设施的现状。作为最著名的众源数据储存库之一,OpenStreetMap(OSM)可以在很大程度上帮助缺乏露天人行道数据。然而,OSM数据的完整性和质量长期以来一直是一个主要问题。在本文件中,我们初步研究了OSM人行道数据的可用性和可靠性。首先,我们比较了美国50多个主要城市的OSM人行道数据覆盖情况。然后,我们选择了三个主要城市(Searttle、芝加哥和纽约市)进一步分析人行道数据的完整性及其特征,并利用历史的OSM人行道数据,并计算出一个可靠的信标。
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