The objective of this study is to find a way to enhance winter traffic safety. This study has four main contents as follows. Firstly, the characteristic of winter traffic during the snowfall was examined in terms of traffic capacity, travel speed and standard deviation of travel speed. Next, the winter culture including prerequisites for driving and driving skills as well as the standard for snow removal were reviewed. Then, the cases of traffic management in UK, Germany and Japan were reviewed. Finally, the countermeasures to enhance the traffic safety were examined. After that, the variable sectional enforcement for speeding was proposed as a countermeasure to enhance traffic safety by reducing severe travel speed variation. The criteria for the operation of the variable sectional enforcement for speeding were set from 20% to 50% reduction of speed, depending on the amount of snowfall. The sections in which the accidents happened often during the snowfall were considered as the locations to implement the variable sectional enforcement for speeding.

• Seungjun, Lee(Research Institute, Korea Expressway Corporation)
• Seungkirl, Baek(Research Institute, Korea Expressway Corporation)
• Hyunsuk, Lee(Research Institute, Korea Expressway Corporation)