Wider broken longitudinal line

Some **broken longitudinal lines** may appear **noticeably wider** than normal broken lines. This greater width indicates that they have a special function in the organization of traffic.

These markings can be used to:

- **Warn in advance of a fork or merge** on the carriageway, where the **total number of lanes may increase or decrease** before or after the area where the marking appears.
- **Separate special lanes** or specific areas of the carriageway, such as:
- A **speed-change lane or taper** (acceleration or deceleration) or a **weaving lane** from the adjacent basic lanes.
- A **lane reserved for certain vehicles** (for example, buses, taxis, etc.), although on some occasions other vehicles may use it for **permitted manoeuvres** (such as joining or turning).
- An **additional lane whose use is compulsory for slow vehicles**.

In all these cases, the **greater width** of the broken line serves to **draw the driver’s attention** to the existence of a special traffic area or a significant change in the road layout.