International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 09 | Sep 2024
p-ISSN: 2395-0072
www.irjet.net
VOLUME AND LEVEL OF SERVICE STUDIES IN UNCONTROLLED ROAD INTERSECTION Mousumi Manna1, Bodhisattwa Mahata2, Srijan Mukherjee3 1Student (B.Tech), Department of Civil Engineering, OmDayal Group of Institutions, West Bengal, India. 2Student (B.Tech Department of Civil Engineering, OmDayal Group of Institutions, West Bengal, India.
3Assistant Professor, Department of Civil Engineering, OmDayal Group of Institutions, West Bengal, India. ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract – Uncontrolled Road intersections encounter with unique challenges for traffic management and safety. Understanding
the volume of traffic and the resulting level of service at these intersections are crucial for effective transportation planning and decision-making. The study utilizes a comprehensive data collection process, including classified traffic volume counts, video recording of traffic movements, and manual observations, to gather information on traffic volume and geometric design parameters at selected uncontrolled road intersection. Classified volume count survey was conducted during peak hours using the videography method. This project aimed to determine the capacity and level of service (LOS) provided by the road to the users and also to identify the causes of congestion problems in this intersection. By assessing critical gap, follow-up time, conflicting flow rate, heavy vehicle percentage and various others traffic parameters and analyzing these data, the study intended to provide insights into the existing traffic conditions and also to determine the level of service experienced by road users as per HCM 2010 in Indian condition. This information can guide the development of effective strategies to improve traffic flow and also to reduce congestion in the area. Key Words: Critical gap, Follow-up time, Conflicting traffic flow, Movement capacity, Control delay, Capacity, Level of service (LOS)
1.INTRODUCTION Unsignalized intersections are defined as the intersections where traffic operates on the basis of the priority of traffic movements. Capacity at unsignalized intersections is defined as a result of the basic capacity within ideal traffic conditions related to various adjustment and correction factors, which included the impact of road environment, geometric design, and traffic conditions. The right-turning movement (in contrast with the through or left-turn movements) from the minor street has the lowest priority according to the corresponding traffic laws in countries like India. The performance of an unsignalized intersection is strongly influenced by the delay caused by low-priority movements on minor roads. In this project our aim is to study the traffic movement from all approaches in the selected uncontrolled road intersection. Various parameters that influence the capacity and Level of Service will also be analyzed in detail. Finally, the Traffic Flow Condition will be evaluated along with capacity under conflicting flows for an uncontrolled intersection in Indian Condition.
2. SCOPE AND OBJECTIVES The scopes of the work carried out are: • To evaluate the Potential Capacity and Level of Service in terms of Control Delay of the studied road intersection. • To calculate the Movement Capacity of the intersections from Critical Gap and Follow up time calculation using Highway Capacity Manual 2010 • To observe the condition of the intersection under heterogeneous traffic flow. A 3-legged road intersection is to be selected after map study and reconnaissance survey as the part of the preliminary objective of the project. Afterwards, video graphic data should also be collected along with the Geometric data of the selecting intersection. Following parameters are to be computed: • Hourly turning movement volumes. • Heavy vehicle percentages and pedestrian data. • Conflicting traffic flow rate as per the priority rank of the movements. • Critical gap and Follow up time as per HCM. Lane Capacity (veh/hr) and Level of Service in terms of Control Delay (s/veh) of the studied road intersection are to be worked out.
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