The link between accessibility and social equity attracts much attention for promoting sustainability. However, there is no comprehensive approach to elevate the role of accessibility in evaluating transportation system over social equity by considering the variety of urban opportunities and population groups from green transportation perspective. Our goal is to develop such a framework to evaluate transportation equity by focusing on accessibility via transit and cycling. Applying the framework to Fresno, California, and Cincinnati, Ohio with different development patterns, we delineate service areas at block-group level with five time-thresholds. The service area is used to count the number of urban opportunities: jobs, dining, churches, libraries, parks, multi-use paths, schools. We then use statistical comparison and geographical mapping to identify accessibility gap to these opportunities between advantaged and disadvantaged groups defined by income, property value, education, vehicle ownership, race, and age. The results indicate the extent of differences in accessibility is sensitive to threshold specification of grouping population. The findings suggest that the efficiency of transit service needs to be improved to reach the same level of cycling, while they do help with the accessibility for economically disadvantaged neighborhoods. Considering school enrollment, the accessibility to opportunities in Fresno performs differently while students in Cincinnati benefit from good accessibility to most resources. The results of accessibility to multi-use paths highlight the need of providing more efficient green transportation facilities for less wealthy neighborhoods. Variation in accessibility between groups underscores the importance of developing policies to meet the needs of diverse social groups.

无障碍获取与社会公平之间的联系在促进可持续发展方面引起了广泛关注。但是，没有一种综合的方法可以通过从绿色交通的角度考虑城市机会和人口的多样性来提高交通便利性在评估交通系统而不是社会公平性方面的作用。我们的目标是建立一个评估运输公平性的框架，其重点是通过公交和自行车的可达性。将框架应用于具有不同开发模式的加利福尼亚州弗雷斯诺市和俄亥俄州辛辛那提市，我们以五个时间阈值划分了块组级别的服务区域。服务区用于计算城市机会的数量：工作，餐饮，教堂，图书馆，公园，多用途路径，学校。然后，我们使用统计比较和地理映射来确定在优势和劣势群体之间这些机会之间的可及性差距，这些群体由收入，财产价值，教育，车辆拥有，种族和年龄定义。结果表明，可访问性差异的程度对分组人口的阈值规范敏感。研究结果表明，需要提高过境服务的效率，以达到相同的骑自行车水平，同时它们确实有助于为经济上处于劣势的社区提供便利。考虑到学校的入学情况，在弗雷斯诺市获得机会的机会有所不同，而在辛辛那提市的学生则受益于大多数资源的获得。通向多用途道路的结果突出表明，需要为较贫穷的社区提供更有效的绿色交通设施。群体之间可及性的差异强调了制定政策以满足不同社会群体需求的重要性。