A Performance Analysis of a Two Way Stop Control (TWSC) Intersection under Mixed Traffic Conditions
Özet
Intersections are road traffic infrastructure on highways installed to help settle directional movement that could
result in conflict while vehicular trips are made. Evaluation of the challenges faced by different automobile users at the Araromi
junction (A three Leg at-grade Intersection) located in Akure is the main objective of this paper. To achieve this objective, traffic
flow data were collected on the spot by video recording and then the data were manually counted. While, the highway Capacity
manual 2010 methodology was adopted to analyse The entry flow rates, Potential Capacities, Movement Capacities, Movement
Control Delay, Approach Intersection Control and 95th Percentile Quene Length of the intersection. Findings shows that an
average entry flow rate of 357 pc/h occurs for all the legs of the intersection, the North bound left turning movement of the
intersection was not within the allowable limit, the average potential capacity by lane for the intersection is 445 pc/h, and the
average movement capacity by lane 473 Pc/h, the various legs of the intersection has a level of service of ‘A’ and ‘C’ except the
left turning minor street movement that has an ‘F’ LOS. Due to the influence of high traffic flow around the intersection, the
analysis of the real-time traffic flow results reveals the need to diverge the high right turning movement into other route to cater
for low left turning movement causing delay and poor LOS and a need to introduce Signal on the intersection in other to improve
on her functionality.