A Signal Optimization Model to Minimize the Total Vehicle Delay on the Freeway Interchange and Local Arterial

• Main Authors: Chen, Yen-Yu, 陳彥佑
• Other Authors: Wang, Jin-Yuan
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/42659922315547114322

博士 === 國立交通大學 === 運輸與物流管理學系 === 102 === Traffic jams are a big issue in most cities. The traffic jam causes energy waste and air pollution. Arterials in some urban areas are often oversaturated in peak hours. Oversaturated conditions include spillback, lane blockage, and unbalance queue which is caused by different turning ratio and will increase lane-changing behavior. Urban networks usually include local arterials and freeway interchanges. Local arterials are within the compass of local governments, but freeways are under the jurisdiction of the Taiwan Area National Freeway Bureau. They have different opinions on traffic signal plans of the intersection which connects with the off-ramp and neighboring intersections. This study proposes a generalized signal optimization model for an interchange area including a segment of the freeway and several arterial intersections under oversaturated conditions. The optimized signal timings from TRANSYT-7F, TRANSYT 14, and the proposed model input into TSIS for comparison. The result presents that the proposed model reduces total delay or increases total throughput under oversaturated conditions as well as near-saturated conditions.