The effect of toll road development on emission reduction: Case study of Sragen Regency

Transportation cannot be separated from human life in supporting daily activities. Transportation users use vehicles to mobilize from the location of origin to the destination location by using the mode of transportation. Public transportation modes and private vehicles are one of the modes that are widely used by transportation users today. However, current private transportation users continue to increase when compared to public vehicle users because private transportation is considered more efficient, practical and safe by some users when compared to public vehicle users. The increasing use of private vehicles will cause other problems related to congestion, especially in densely populated urban areas. Congestion causes losses to humans both in terms of economy, environment and health. In the transportation and environmental sectors, congestion causes high air pollution due to the longer the vehicle operates on the road when compared to when the traffic flow is smooth, so it is very important to conduct further research related to reducing the level of congestion. Congestion itself can be minimized in various ways, one of which is by building toll roads that are devoted to reducing external movements that burden the road network in the city. By diverting external movements that pass through national roads to toll roads, it is expected to reduce congestion levels and stabilize vehicle speeds. It is expected that reducing congestion and stabilizing vehicle speeds can reduce vehicle emission levels. This study aims to determine the effect of toll road development on reducing emission levels by modeling traffic using software. By using the Maximum Entropy method to obtain the value of the β parameter which will be used as a determining factor for the distribution of movement in each zone and road network loading using EMME/4 software. By using two scenarios, namely the do-something scenario (adding toll roads) and do-nothing (without adding toll roads). The difference in scenarios is done to get a comparison of road network performance results and emission levels from the do-something scenario and the do-nothing scenario. From the results of the analysis, it can be seen that the construction of toll roads (do-something) passing through Sragen Regency has an effect on reducing emission levels in Sragen Regency.