Analysis of Delay by Alternative Passing Opportunities on Two Lane Highways
Journal Title: International Journal of Engineering and Science Invention - Year 2017, Vol 6, Issue 12
Abstract
As of December 31, 2016, the total number of national highways in Korea is 13,948 km (about 12.9% of all roads), of which about 6,000 km (42.9% of the national highways) are two lane roads. Since 2000, many two lane roads have been extended as part of the interregional mobility policy, resulting in high standard and over-investment controversy for extended four-lane roads. Since then, the government has been asking for reasonable engineering grounds (e.g. demand base) for construction of new roads or already designed roads. In this situation, it is necessary to envision efficient operation improvement technique through low budget input rather than unconditionally expanding roadway by 4th lane. Therefore, in this study, we tried to provide the grounds for applying to the domestic market by referring to the various operating methods (overtaking opportunities) applied abroad in order to increase the capacity of two lane roads in Korea and to operate them safely and efficiently. The results of the field survey and the simulation of two lane roads were analyzed for the sections where the 100% overtaking prohibition section, the 100% overtaking section (1km), and the overtaking lane were installed. As a result, the two lane road with the overtaking lane has an effect of about 8.7% in terms of the traffic volume of 1,000 cars compared with the traffic lane, and the service level is also improved. This can be used as a reference for providing overtaking opportunities on two lane roads, and it is possible to elicit the overtaking period or the length of the overtaking interval through the detailed analysis of the overtaking rate.
Authors and Affiliations
Young Rok Kim, Chun Joo Yoon
Keywords
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