Study Potential Capacity of the U-turn in order to increase efficiency and safety : A case study of U-turn Infront of Rajamangala University of Technology Rattanakosin Salaya Campus

Abstract

Improving road expansion is affecting demand to change direction of the traffic to the desired direction. Causing demand to return the car. The car that U-turn will affect traffic in the same direction and the opposite side. This research aims to study the Potential Capacity of U-turn point on Put Ta Monthon 5 road or 3414 Highway at kilometers, 9+500 near the Rajamangala University of Technology Rattanakosin Salaya Campus. As a criterion for indicating improvement in the next step. The main consideration is potential capacity. The analysis of the Critical Gap, Conflicting, Main flow and the Follow-up time. To increases capability the U-turn point design. Resulting in increases the safety of staff and students in the university. The results showed that during peak hours, traffic volume, was over the potential capacity, and also the U-turn point is dangerous because it has to cut the main traffic flow is an amount much. Suggestions for further studies Agreed to study the impact of traffic in case of increasing capacity in the U-turn, such as increasing the number of U-turn In the direction of arrival in Bangkok.