設於主幹路或快速公路出口前的行車線，讓駕駛人有時間及距離減速。
A lane before an exit from a major trunk road or an expressway that gives drivers time and space to reduce speed.
設於主幹路或快速公路出口前的行車線，讓駕駛人有時間及距離減速。
A lane before an exit from a major trunk road or an expressway that gives drivers time and space to reduce speed.