‟
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