COMPARISON OF THE MICRO-SIMULATION SOFTWARE AIMSUN & IHCM-1997 FOR HIGHWAY TRAFFIC PERFORMANCE ANALYSIS
Abstract: In order to make
good decisions in transportation, decision-makers need some references to
support it. One of the sources for such reference is by performing a
micro-simulation; a model for representing real-world conditions including the
behavior of travelers, vehicles and the infrastructure. This study examines and
presents a comparison between AIMSUN (a commercial micro-simulation software)
and Indonesia Highway Capacity Manual 1997(IHCM-1997) in relation to the road
traffic performance of the study object Södralänken, E266 and E75, in the
southern part of Stockholm, Sweden. A calibration process was conducted in
order to find the best value of a set of parameters in each software, selected
based on the lowest value of a Root Mean Square Error (RMSE) computed based on
observed speed data and the model output. The parameters were then validated
using evening peak-hour data. The comparisons were conducted in terms of flow,
speed and density by AIMSUN, IHCM-1997 and the observation data on morning and
evening peak-hour. The results are from the given experiments with the AIMSUN
software with the best set of parameters being when the value of Maximum
Desired Speed is at 100 km/h and Speed Acceptance is at 1,1. It shows that the
significant difference between AIMSUN, IHCM-1997 and observation lays on the
speed. IHCM-1997 gives relatively higher speed than both AIMSUN and observation
data.
Author: Aji Ronaldo
Journal Code: jptsipilgg120044
