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Environmental effects of traffic incidents: example of Istanbul O2 (TEM) highway
(İdris Karagöz, 2024) Boz, Fatih Kerem; Özen, Halit
Unusual decreases in road capacity or unexpected increases in demand (for example, vehicle breakdowns and traffic accidents) are defined as traffic incidents. Approximately 25% of traffic delays are caused by such incidents. These incidents affect capacity directly (for example, partial or complete lane closure) or indirectly (drivers slowing down to observe the accident), causing delays and travel times to increase, fuel consumption to increase, and environmentally harmful gas emissions to rise. The purpose of this study is to examine the environmental effects of traffic incidents. In this regard, the environmental effects (CO, NOx, VOC and fuel consumption) of a traffic accident that occurred on the Istanbul O2 (TEM) Highway were analysed using VISSIM microsimulation program. As expected, traffic incidents were found to have negative effects on highway operation performance measures. In addition, based on this analysis performed using the simulation model, various suggestions have also been made to reduce the environmental impacts of traffic incidents.