← All Blackspots
🔴 M4 — Blackspot Analysis
Severe Blackspot · 1,385 combined incidents · 43 fatal · Showing full road data
1,185Police Collisions
43Fatal
173Serious
1,778Casualties
200NH Incidents
1,385Combined
UKTU Danger Score
98
out of 100
Extreme Risk
Based on collision frequency, severity ratio, fatalities, and casualty count.
📍 Each pin marks an actual police-recorded collision location · Zoom in and click for details
🔴 Severity Breakdown
📊 Year-on-Year Trend
📈 Increasing — 2024: 93 → 2025: 107 collisions
🚗 Speed Limit at Collision Location
📈 Monthly Collision Trend
📅 Day of Week Pattern
🌤️ Weather Conditions at Time of Collision
🛣️ Road Surface Conditions
💡 Light Conditions
Darkness - lighting unknown
📋 Police Collision Records (200)
DfT STATS19 police-recorded collisions. Click any record to expand full details.
📅 Date
Sunday, 29 June 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Thursday, 26 June 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Monday, 23 June 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Sunday, 22 June 2025
🌤 Weather
Fine no high winds
🛣 Road Surface
Wet or damp
💡 Light Conditions
Darkness - no lighting
📅 Date
Friday, 20 June 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Thursday, 19 June 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Thursday, 19 June 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Saturday, 14 June 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Thursday, 12 June 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Saturday, 7 June 2025
🌤 Weather
Fine no high winds
🛣 Road Surface
Wet or damp
💡 Light Conditions
Daylight
📅 Date
Friday, 6 June 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Tuesday, 3 June 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Friday, 30 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Friday, 30 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Tuesday, 27 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Tuesday, 27 May 2025
🌤 Weather
Fine no high winds
🛣 Road Surface
Wet or damp
💡 Light Conditions
Darkness - lights lit
📅 Date
Friday, 23 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Darkness - no lighting
📅 Date
Friday, 23 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Friday, 23 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Thursday, 22 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Friday, 16 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Wednesday, 14 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Tuesday, 13 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Monday, 12 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Sunday, 11 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Sunday, 11 May 2025
💡 Light Conditions
Daylight
📅 Date
Saturday, 10 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Friday, 9 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Friday, 9 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Darkness - no lighting
📅 Date
Tuesday, 6 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Saturday, 3 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Saturday, 3 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Friday, 2 May 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Thursday, 1 May 2025
💡 Light Conditions
Daylight
📅 Date
Monday, 28 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Darkness - no lighting
📅 Date
Tuesday, 22 April 2025
🌤 Weather
Raining no high winds
🛣 Road Surface
Wet or damp
💡 Light Conditions
Darkness - no lighting
📅 Date
Sunday, 20 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Sunday, 20 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Friday, 18 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Darkness - no lighting
📅 Date
Wednesday, 16 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Tuesday, 15 April 2025
🌤 Weather
Raining + high winds
🛣 Road Surface
Wet or damp
💡 Light Conditions
Daylight
📅 Date
Tuesday, 15 April 2025
🌤 Weather
Raining no high winds
🛣 Road Surface
Wet or damp
💡 Light Conditions
Daylight
📅 Date
Saturday, 12 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Friday, 11 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Wednesday, 9 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Tuesday, 8 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Wednesday, 2 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Darkness - no lighting
📅 Date
Tuesday, 1 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Tuesday, 1 April 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
📅 Date
Sunday, 30 March 2025
🌤 Weather
Fine no high winds
💡 Light Conditions
Daylight
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Data Sources: DfT STATS19 police-recorded collision data and National Highways incident data,
both under Open Government Licence v3.0. This is historical DfT statistical data — not an official police report.
Blackspot classification is algorithmic and not an official safety assessment.
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