TRB’s Transportation Research Record: Journal of the Transportation, No. 2114 includes 10 papers that explore increasing the efficiency of road development aid; bus rapid transit systems in India; citywide transit integration in Sao Paulo, Brazil; carbon dioxide emissions from land transport in India; and transportation greenhouse gas mitigation in Nanchang, China. This issue of the TRR also examines safety assessment of taxi drivers in Singapore, an evaluation of road safety actions promoted by a nongovernmental organization, road crash history and risk groups in India, safety performance of rural signalized intersections in South Korea, and pedestrian level of service at signalized intersections in China.