Ministry of Land, Infrastructure and Transport, Molit Statistics System, Total Registered Motor Vehicles, http://stat.molit.go.kr/portal/cate/stat-FileView.do, 2015.
The International Organization of Motor Vehicle Manufacturers, Production of Buses and Coaches, http://www.oica.net/production-7, 2014.
C. H. Kim, D. G. Yun and C. M. Lee, "Numerical Study on an the Aerodynamic Effects of a Rear-side Spoiler on the Driving Stability of a Passenger Car," Journal of SNUT, Vol.47, 1998.
C. H. Kim and C. B. Youn, "Aerodynamic Effect of Roof-fairing System on a Heavy-duty Truck," Int. J. Automotive Technology, Vol.6, No.3, pp.221-227, 2005.
C. H. Kim and J. Y. Cha, "A Numerical Study on an Aerodynamic Effect of a Roof-Fairing System of a Heavy-duty Truck," KSAE Spring Conference Proceedings, pp.1499-1505, 2002.
C. H. Kim, "A Streamlined Design of a Highspeed Coach for Fuel Savings and Reduction of Carbon Dioxide," International Journal of Automotive Engineering of JSAE, 20114633, pp.101- 107, 2011.
B. B. Jewel, H. R. William and P. Alan, Lowspeed Wind Tunnel Testing, 4th Edn., John Wiley & Sons, New York, 1999.