Collective Actions for Relieving Urban Traffic Congestion: Empirical Lessons from 'No Driving for A Day per Week' Policy in Seoul

抄録

The purpose of this paper is to analyze how the 'No Driving for A Day per Week' (NODAD) policy can address traffic congestion in Seoul, Korea. The policy is composed of main and supplementary programs. The main program is based on voluntary participation of individual drivers. The supplementary programs includes incentives and monitor programs. Incentives can be divided into monetary and non-monetary. These supplementary programs play important roles to encourage voluntary participation and to keep sincere commitment, resulting in the effectiveness of the entire policy. Diverse interactions among the policy, user groups (individual drivers), resource system (road network), and external factor (new technology) are also investigated. Monitoring program with a new technology, such as Radio Frequency Identification (RFID), is expected to increase the efficiency of the policy, because the violation of voluntary participation can be easily detected by the RFID technology.