PURPOSES : This study reveals the social cost of illegal parking. Roadside illegal parking causes additional traffic congestion, air pollution, and traffic accidents. Several cities try to reduce illegal parking for the same reasons and build public parking spaces. However, few studies have been conducted on the effects and social cost of illegal parking problems.
METHODS : In this study, a real-world study site was selected for the calibration of the VISSIM micro-simulator parameters, and several scenarios were created for developing illegal parking effect models. According to the simulation results, this study demonstrated five regression models that illustrated the average travel speed drop effects and the differences in emissions. RESULTS : Depending on the scenarios, the travel speed was dropped by 20 km/h–57 km/h and the levels of carbon dioxide and nitrogen oxide were increased by 111 g–279 g and 22.5 g–56.3 g, respectively.
CONCLUSIONS : In this study, a methodology for estimating the social cost of illegal parking was established. Therefore, it is expected to contribute to the evaluation of policies related to illegal parking or the feasibility of facility investment.

ABSTRACT
1. 서론
    1.1. 연구의 배경 및 목적
    1.2. 연구의 범위 및 내용
2. 관련문헌 고찰
3. 모형구축
    3.1. 효과척도 설정(MOE : Measure of Effectiveness)
    3.2. 시나리오 구성
    3.3. Micro simulation 구축 및 정산
4. 분석결과 및 일반화
    4.1. 분석결과
    4.2. 분석결과 일반화
    4.3. 사회적비용 추정방안
5. 결론
REFERENCES

• 김지훈(지방행정연구원 지방투자사업관리센터) | Kim Ji Hoon
• 김상기(지방행정연구원 지방투자사업관리센터) | Kim Sang Ke 교신저자