Wider longitudinal broken line

A **longitudinal broken line** that is **noticeably wider** than the normal broken line has special functions on the carriageway:

- **Advance warning of diverging or merging carriageways**
It indicates that a **divergence** or **confluence** of the carriageway is approaching, where the **number of lanes may change**, either before or after that area.

- **Separation of special lanes or speed-change areas**
It is used to **separate**:
- 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 or taxis**). Other vehicles may only use that lane to perform **permitted manoeuvres** (such as turning).
- An **additional lane** that is **mandatory for slow vehicles**.

In all these cases, the **greater width of the broken line** indicates that it is a **special traffic regulation area**, different from the normal separation between lanes.