What is the definition of a dual carriageway?

A dual carriageway is defined as a two-way road that is divided by a central strip of land, also known as a median. This design enhances safety by separating oncoming traffic, reducing the likelihood of head-on collisions. Furthermore, the division allows for better traffic flow, as vehicles can move in opposite directions without interference.

The presence of the strip of land typically provides a buffer zone, which can accommodate emergency vehicles and offers some protection for drivers and passengers. Understanding the structure of a dual carriageway is essential for safe driving, as it requires specific rules and attentiveness to maneuvers such as lane changes and merging.

The other choices do not capture the essence of what constitutes a dual carriageway: a single lane in each direction, a road for bicycles only, or a single lane road without dividers all lack the critical aspect of separation that defines a dual carriageway.