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Barrth, M. and Kanok, B. (2009). Traffic congestion and greenhouse gases, Research Report, Transportation Research at the University of California, Access 35, 2-9.Barrth, M. and Kanok, B. (2009). Traffic congestion and greenhouse gases, Research Report, Transportation Research at the University of California, Access 35, 2-9.

Ericssin, E., Sturm, P. and Minarik, S. (2001). “Driving pattern, exhaust emission and fuel consumption over a street network.” Proceedings of 11th interational symposium. Vol. 1, pp. 331-340 (in Austrian).Ericssin, E., Sturm, P. and Minarik, S. (2001). “Driving pattern, exhaust emission and fuel consumption over a street network.” Proceedings of 11th interational symposium. Vol. 1, pp. 331-340 (in Austrian).

Haworth, N. and Symmons, M. (2001). The relationship between fuel economy and safety outcomes, Report No. 188, Monash University accident research center, Australia (in Australian).Haworth, N. and Symmons, M. (2001). The relationship between fuel economy and safety outcomes, Report No. 188, Monash University accident research center, Australia (in Australian).

Hesham, R., Ahn, K. H., Ihan, E. S. and Jang, S. B. (2003). “Emission model development using in-vehicle on-road emission measurements.” Hesham, R., Ahn, K. H., Ihan, E. S. and Jang, S. B. (2003). “Emission model development using in-vehicle on-road emission measurements.”

Jung, S. J., Kim, T. H. and Kim, Y. S., (2010). “Risk evaluation of slope using principal component analysis(PCA).” Journal of Korean Geotechnical Society Vol. 26, No. 10, pp. 69-79 (in Korean).Jung, S. J., Kim, T. H. and Kim, Y. S., (2010). “Risk evaluation of slope using principal component analysis(PCA).” Journal of Korean Geotechnical Society Vol. 26, No. 10, pp. 69-79 (in Korean).

Kim, Y. I., Chung, J. H. and Kum, K. J. (2004). “A strudy on characteristics of highway segments for recreational trips using principal analysis.” Journal of Korean Society of Transportaion Vol. 22,  No. 2, pp. 87-93 (in Korean).Kim, Y. I., Chung, J. H. and Kum, K. J. (2004). “A strudy on characteristics of highway segments for recreational trips using principal analysis.” Journal of Korean Society of Transportaion Vol. 22,  No. 2, pp. 87-93 (in Korean).

Korean Society of Transportaion (2001). Korean highway capacity manual, Korean Society of Transportaion (in Korea).Korean Society of Transportaion (2001). Korean highway capacity manual, Korean Society of Transportaion (in Korea).

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Shim, M. K. (2010). A Study on Air Quality Enhancement and CO2 Reduction with Analyzing Idling Stop of Vehicles, Ph.D. Dissertation, University of Kangwon, Korea (in Korea).Shim, M. K. (2010). A Study on Air Quality Enhancement and CO2 Reduction with Analyzing Idling Stop of Vehicles, Ph.D. Dissertation, University of Kangwon, Korea (in Korea).

Statistics Information by Lines (2010). http://gits.gg.go.kr/ (in Korean).Statistics Information by Lines (2010). http://gits.gg.go.kr/ (in Korean).