The highway road painting policy for reduction of Co<Subscript>2</Subscript> with fuel-cut function in downhill part of highway

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The highway road painting policy for reduction of Co2 with fuel-cut function in downhill part of highway

Ko, Kwangho / Jeung, Inseuck / Yoo, Inkyoon / Kim, Jewon / Lee, Soohyung

Abstract The fuel is not injected when the driver releases acceleration pedal of a vehicle with engine speed higher than about 1,500rpm in mid driving speed range. This is called ‘fuel-cut function’ and almost every modern vehicle is equipped with this function. This fuelcut function is activated on downhill parts of a highway most often. Therefore the vehicle-exhausted CO2 can be zero in these downhill parts if the driver could recognize these parts of highway. We compared the vehicle-exhausted CO2 emission with and without fuel-cut function in this study. The exhausted CO2 mass of a passenger car(2,000cc engine volume) is reduced by about 4% with this function in a test highway of South Korea. This CO2 reduction effect can be achieved if the downhill parts of a highway are painted with a specific color. And this road painting can be included in the highway road rehabilitation policy to cut down CO2 emission of vehicles.