What does dual carriageway mean?

1 Answers
OAnna
07/29/25 4:08pm
Dual carriageway refers to a two-way road, while two-lane means the road can accommodate two vehicles traveling in the same direction. The yellow dashed centerline on a two-way two-lane road is used to separate opposing traffic flows. It is generally marked on the centerline of the roadway but is not necessarily aligned with the geometric centerline of the road. Under safe conditions, vehicles are allowed to cross the line or make left turns. Any two-way road with a pavement width sufficient for two motor vehicle lanes should be marked with a yellow center dashed line. Domestic dual carriageways: In China, secondary and tertiary highways mostly adopt dual carriageways. For secondary highways in plain and hilly areas with heavy mixed traffic where separating slow lanes is difficult, fast and slow lanes may be marked, but they are still considered dual carriageways. Quaternary highways should be designed as dual carriageways, while single-lane sections may be used where traffic volume is low. Precautions for driving on dual carriageways: When the road is narrow or there are obstacles on the roadside, driving becomes more challenging. In such situations, do not rush. Maintain an appropriate speed, avoid excessive speed, and stay observant. If there is an obstacle ahead and oncoming traffic in the opposite lane, large trucks should not only slow down but may also stop temporarily to let passenger cars pass first. Avoid competing for the lane to ensure safety.
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