Basic Report

This study reveals the social cost of illegal parking. Roadside illegal parking cause additional traffic congestion, air pollution, traffic accidents and etc. Many cities try to reduce illegal parking due to same reasons and build public parking spaces. However, not many studies are conducted the effects and social cost of illegal parking problems.
   In this study, the real world study site was selected for calibration of the VISSIM micro-simulator parameters and as many as possible scenarios are created for developing illegal parking effect models. According to the simulation results, this study shows five regression models which show the average travel speed drop effects and the differences of emission. Defend on scenarios, the travel speed are dropped by 20km/h~57km/h and each of carbon dioxide, nitrogen oxide is increased by 111g~279g and 22.5g~56.3g.