Modeling Traffic Flow on Buah Batu Exit Toll Gate Using Cellular Automata

In the last decade, Bandung has become one of the tourism destination places in Indonesia. It is reported that almost 6.7 million visitors come to Bandung in 2018, and the number increased by almost 4% per year since 2014. This rise in the number of visitors leads to the establishment of several toll gates as main access points throughout the city. As one of the busiest ones, Buah Batu toll gate is frequently congested because of the location that is close to the southern part of Bandung. To overcome this problem, a traffic regulation based on computer simulation is urgently required. In this study, we simulate the traffic system on the Buah Batu toll gate by using a combination of Nagel-Schreckenberg (NaSch) and Daoudia and Moussa (DM) models. NaSch model was used to defined vehicle movement, while the DM model was used to allow a vehicle to change lane. We defined three scenarios to evaluate the effectivity of the closing gate scheme. We found that the closing of gate 5 is more effective than the closing of gate 1. We also investigated the contribution of traffic density and driver's behavior, e.g., stopping behavior and lane-changing behavior, to the average velocity of the vehicles.