You should avoid overtaking in several situations where it is unsafe or illegal, including:
- On bends, hills, crests, and dips where visibility is limited, making it difficult to see oncoming traffic or road hazards.
- Near road junctions, crossroads, and roundabouts where traffic movements are unpredictable.
- Approaching or on pedestrian crossings, including zebra crossings or school crossings, to avoid endangering pedestrians.
- In poor weather conditions such as heavy rain, fog, snow, ice, or high winds that reduce traction and visibility.
- In tunnels and underpasses due to restricted space and poor lighting.
- Near roadworks, construction zones, level crossings, and animal crossing zones due to sudden hazards.
- On narrow roads without adequate space for safe overtaking.
- Where road signs or markings prohibit overtaking, such as double solid white lines or no-overtaking signs.
- On motorway slip roads and exit roads where speeds and merging traffic create risks.
In general, never overtake if you cannot see far enough ahead to be sure the road is clear and safe, or if there is any doubt about the safety of the manoeuvre.
