Abstract
Brigjend Slamet Riyadi road is the main city road serving the traffic of Surakarta City. It is located in the Central Business District so that many vehicles pass through this road. The relatively high traffic volume in Brigjend Slamet Riyadi affects the signalized intersections performance along this road. This study analyses the performance of signalized intersections along the Brigjend Slamet Riyadi road by using the IHCM 1997 method and PTV Vistro software. The IHCM 1997 method is a traffic modelling method based on empirical Indonesian traffic conditions. PTV Vistro is traffic modelling software based on empirical United States America traffic conditions. Analysis of the signalized intersections performance results using both approaches is compared with the field data. Calibration and validation of models is carried out to see the similarity of traffic performance results between models with field data. In general, the IHCM 1997 method produces vehicle queue length closer to field data than the PTV Vistro software. The IHCM 1997 method tends to produce lower degree of saturation, vehicle delay and level of service than the PTV Vistro software.
Highlights
Junctions are critical elements in a highway transport system as they are the locus points where delay, accidents and emissions tend to be concentrated [1]
The greater degree of saturation flow tends to produce the greater percentage difference in the vehicle queue length between the model results and field data. This phenomenon indicates that the Indonesian Highway Capacity Manual (IHCM) 1997 method with default values produces traffic measure of performance that does not match the field conditions, especially on traffic conditions which is close to the unstable conditions ( 0.8 = level of service (LOS) D)
T test results show that there is no significant difference between model results and field data, apart from the PTV Vistro software model for afternoon peak hour
Summary
Junctions are critical elements in a highway transport system as they are the locus points where delay, accidents and emissions tend to be concentrated [1]. This study is conducted to determine the differences between IHCM 1997 and PTV Vistro models results, with field data using default and calibrated values of traffic parameters. It carried out a comparison of analytical results between PTV Vistro software using the HCM 2010 approach with the IHCM 1997 method for analysis of signalized intersections. In the end of the analysis, the result of the signalized intersection performance in the form of degree of saturation, vehicle queue length, vehicle delay and LOS intersection of calibrated and validated models of the IHCM 1997 method and PTV Vistro software are compared
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