This motorway is congested; are vehicles in the right-hand lane allowed to drive at a higher speed than those in the left-hand lane?
Joining traffic
Explanation
Highway congestion: different speed by lane
- In **very dense** traffic (all lanes occupied and speed dictated by traffic), if the **right lane** moves faster than the left, it is **not considered overtaking**. Therefore, it is **allowed**.
- Reason: the priority is **flow and safety**. Changing lanes to "overtake" is neither safe nor practical because **there are not enough gaps**, and all lanes are moving in **parallel queues**.
- The general rule of overtaking on the **left** applies when there is space and maneuverability. In **congestion**, this **exception** exists.
- Recommendation: **maintain your lane**, keep a **safe distance**, and only change lanes to **exit** or for **safety necessity**.
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