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Unsignalised intersection is one of the most common element in road network systems and is normally implemented to regulate low volume of traffic flow. Unlike a signalised intersection, it can operate without heavy investment on the equipment, operations and maintenance. Therefore, it is crucially important for an unsignalised intersection to operate at the best Level of Service (LOS) possible and the lowest possible Degree of Saturation, Control Delay and Queue Length. In this study, aaSIDRA 2.0 software package was applied in analyzing the collected data. Peak hours were determined by the means of traffic counts. The aaSIDRA 2.0 programme requires the Peak Hour Factor (PHF) to be the key variable for the analysis. The software was then applied to get the LOS of the roads affected as well as the overall LOS of the intersection. The area chosen for the study was the Kota Bharu-Machang Road and Jalan Pangkal Kalong Intersection, located about 24 kilometres south of Kota Bharu town in the state of Kelantan, Malaysia. This particular intersection has seen an increase in traffic volume in the last ten years, culminating in delays and congestions. Results of this preliminary study have shown that the peak hours were from 7.00 a.m. to 8.00 a.m. and 4.00 p.m. to 6.00 p.m. As for the level of service (LOS), it is graded at LOS F which indicates the need for a signalized intersection.

Determination of Peak Hours And Level Of Service At An Unsignalised Intersection Using aa SIDRA 2.0