UK's #1 Crash Cause: "Failed to Look Properly" — Not Speed, Not Drink

According to the UK Department for Transport (DfT) analysis of reported road collisions, the single most frequent contributory factor is:

"Failed to look properly" — cited in ~35–40% of all accidents (varies by year).

What It Covers

• Not checking mirrors before maneuvering
• Failing to observe at junctions / roundabouts
• Not seeing pedestrian/cyclist in blind spot
• Inadequate observation while reversing
• "Looked but did not see" (cognitive lapse)

Other Top Factors (DfT Ranking)

1. Failed to look properly
2. Failed to judge other's path/speed
3. Careless/reckless/in a hurry
4. Loss of control
5. Poor turn/maneuver
6. Exceeding speed limit
7. Slippery road (weather)
8. Following too close
9. Impaired by alcohol/drugs
10. Distraction in vehicle (phone, passengers)

Key Insight

Observation failures — not speed or intoxication — are the primary human error in UK crashes. This drives policy: junction redesign, A-pillar visibility standards, mandatory reversing cameras, advanced driver assistance (AEB, blind-spot), and "Dutch Reach" education.

Speed kills — but not looking kills more often.