Ingenieur Vol. 74 Ingenieur Vol 72, April-June 2018 - Page 46

‟ INGENIEUR The SIDRA intersection software is used as an aid in the design and evaluation of signalized intersections (fixed-time/pretimed and actuated), roundabouts, single point interchanges, signalized pedestrian crossings, roundabout metering, two-way stop sign control, give-way/yield sign-control and all-way stop sign control. sensors to determine actual traffic demand and the conventional control methodology being unable to determine suitable green time split whenever traffic demand exceeds capacity. Therefore, there is a need to find an applicable modern software such as SIDRA 6.0 that can be used to avoid overcrowding and traffic congestion at intersections. Scope and area of study This study focused on the estimation of queue lengths and delays that result from the adoption of a signal control strategy at intersections, and a sequence of intersections. Traffic delays and queues are principle performance measures that factor into the determination of intersection Level Of Service (LOS), in the evaluation of the adequacy of lanes and in the estimation of fuel consumption and emissions. Therefore, the design of an intersection to obtain minimum delay should be the foremost goal for all traffic engineers. In this study we chose the most congested area in Bukit Chedang Rasah, Seremban, Negeri Sembilan. The study was carried out at the T-Intersection at Bukit Chedang as shown in Figure 1.1. Objective The objectives of this study were: a. To analyse the road network at selected signalised T-intersections at Bukit Chedang, Rasah Seremban using SIDRA software version 6.0, b. Identify the set of variables that significantly af fect traf fic delays at signalised intersections, and c. Recommend suitable solutions to the problems that are detected. 6 44 VOL 2018 VOL 74 55 APRIL-JUNE JUNE 2013 LITERATURE REVIEW Computer simulation is essential for the analysis of freeway and urban street systems. The Signalised Intersection Design and Research Aid (SIDRA) software is an intersection-based platform established by the Australian Road Research Board (ARRB) as an assistant for capacity, timing and performance analysis at isolated intersections. According to H. Taale and H. Van Zuylen (2001), SIDRA is a very powerful analytical programme for signalised intersections. Specialised engineering simulations can study the formation and dissipation of congestion on roadways, compare alternative geometric configurations and assess the impacts of control strategies (J. Salzman et al., 2002). Developments in traffic flow theory and computer technology have led to the widespread creation and use of traffic simulation models by traffic engineers and transportation designers involved in the design of transportation facilities and the planning operations (W. Hook and M. Replogle 1996). Prior to the development of traffic simulation models, studies for planning and improving roadway facilities were typically undertaken by computational methods that could estimate delay, LOS, capacity and other parameters for a given set of roadway conditions (L. Oduwaye. 2007) . The SIDRA intersection software is used as an aid in the design and evaluation of signalised intersections (fixed-time/pretimed and actuated), roundabouts, single point interchanges, signalised pedestrian crossings, roundabout metering, two- way stop sign control, give-way/yield sign-control and all-way stop sign control. The flexibility of SIDRA Intersection permits its application for many other situations, including merging analysis and uninterrupted traffic flow conditions (R. Akcelik and M. Besley. 2003). SIDRA Intersection is an advanced micro-analytical traffic evaluation tool