Abstract
This paper describes the results of TDM implementation with toll discount for ETC vehicles, which is intended to mitigate congestion for an uninterrupted flow section of the Tomei Expressway. As an initial trial for mitigation of congestion on Japanese intercity expressways, the TDM was implemented during the New Year period of 2007. Though traffic congestion still occurred partly because of increased daily traffic volume and insufficient shift of traffic demand from peak hours to off-peak hours, it is estimated that total delay is reduced by 35% as compared to the one predicted in case of no TDM implementation. It seems difficult to expect the shift traffic if the amount of discount is less than 1000 yens or so. Moreover, it is found from a questionnaire survey that about 50% of targeted drivers were aware of the New Year early morning discount and the induced demand was about 2%. Finally some issues are also addressed.
