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http://dx.doi.org/10.7855/IJHE.2011.13.3.177

Comparison of Vehicle Carbon Emissions in Expressway and National Highway  

Lee, Yoon-Seok (경기대학교 도시교통공학과)
Oh, Heung-Un (경기대학교 도시교통공학과)
Publication Information
International Journal of Highway Engineering / v.13, no.3, 2011 , pp. 177-184 More about this Journal
Abstract
There are several differences between freeways and general national roads in terms of structures, conditions and limited speeds. Likewise, the characteristics of $CO_2$ emission in these roads differ depending on the road types. For these reasons, it is necessary to compare the two types of roads in terms of $CO_2$ emissions. The study was performed targeting Gyeongbu Expressway and National Highway 1. Firstly, the amount of $CO_2$ emission each car was compared in the whole sections of the both. Secondly, top 10 sections were picked out, and then $CO_2$ emission each section were compared. Lastly, two sections which were with the highest and lowest amount of $CO_2$ emission per car, were compared. As results, it were found that there were less amount of $CO_2$ emission on freeways. because cars are running on uniform velocity at relatively high speed, and that there were more amount of $CO_2$ emission on the national highway. because of frequent intersections and associated congestion. It may be concluded that the amount of $CO_2$ emission at the national highway could be reduced if signal coordination and intersection intervals are improved there.
Keywords
freeway; national highway; carbon; carbon emission;
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