PURPOSES: The sensitivity of CO2 emissions per vehicle by a various speeds is compared according to the type of roads. METHODS: The methodology of the study are as follows: First, the sensitivity of CO2 emissions per vehicle are analyzed by averaged daily travel speeds. Second, the sensitivity of CO2 emissions per vehicle are analyzed by averaged hourly travel speed. Third, the sensitivity of CO2 emissions per vehicle are analyzed by sectional travel speeds. RESULTS: The sensitivity that on Saturday in a week, at peak times in a day and in close location from Seoul was higher than in other situations. CONCLUSIONS: From this study, we may conclude that CO2 emissions per vehicle at low speeds are generally more sensitive.

• 이윤석 | Lee, Yoon-Seok
• 오흥운 | Oh, Heung-Un