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CrashStats

A171 accidents: crash map and statistics

Police recorded 4,820 collisions on the A171 from 1979 to 2025, with 7,512 casualties. Of those crashes, 141 were fatal and 1,285 serious, and 153 people were killed.

In 2025 there were 37 collisions on the A171, up 3% from 36 in 2024, with 45 casualties.

Collisions since 1979
4,820
215th highest of 4,923 roads
Casualties
7,512
1.56 per collision
Fatal collisions
141
153 people killed
Serious collisions
1,285
1,774 seriously injured
Collisions in 2025
37
Up 3% on 2024
Casualties in 2025
45
Down 4% on 2024

Crash severity on the A171

On the A171, 2.9% of collisions were fatal and 27% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal1412.9%
  • Serious1,28527%
  • Slight3,39470%

Where the A171 ranks among 4,923 roads

Most collisions
215th
Most casualties
181st
Most fatal collisions
148th
Most serious collisions
141st

A171 accidents by year

Collisions on the A171 peaked at 178 in 1990 and were down to 37 in 2025.

Collisions and casualties on the A171, 1979 to 2025

  • Collisions
  • Collisions in 2025: 37
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20253745
20243647
20234376
20224159
20215277
20204463
20194766
20185069
201771106
201675123
201555101
20144886
201369105
201263101
201171113
201093151
200973125
200878129
200773112
200691146
200599157
2004103158
2003101149
2002116182
200192138
2000114171
1999126222
1998105166
1997123207
1996107160
1995145233
1994139218
1993137240
1992146263
1991140226
1990178276
1989176231
1988154225
1987155222
1986175263
1985133213
1984145220
1983139208
1982120177
1981151226
1980144207
1979147254

When crashes happen on the A171

Monday has the most collisions on the A171 (739), and 3pm to 6pm is the busiest time of day (1,250).

Collisions by day of the week

  • Monday739 (15%)
  • Tuesday585 (12%)
  • Wednesday647 (13%)
  • Thursday685 (14%)
  • Friday723 (15%)
  • Saturday702 (15%)
  • Sunday739 (15%)

Collisions by time of day

  • Midnight to 3am160 (3.3%)
  • 3am to 6am74 (1.5%)
  • 6am to 9am524 (11%)
  • 9am to noon757 (16%)
  • Noon to 3pm936 (19%)
  • 3pm to 6pm1,250 (26%)
  • 6pm to 9pm707 (15%)
  • 9pm to midnight412 (8.5%)

Collisions by month

  • January340 (7.1%)
  • February346 (7.2%)
  • March354 (7.3%)
  • April367 (7.6%)
  • May434 (9%)
  • June434 (9%)
  • July459 (9.5%)
  • August483 (10%)
  • September414 (8.6%)
  • October427 (8.9%)
  • November399 (8.3%)
  • December363 (7.5%)

Light conditions at the time

  • Daylight3,603 (75%)
  • Dark, street lights lit712 (15%)
  • Dark, no street lighting465 (9.6%)
  • Dark, lighting unknown25 (0.5%)
  • Dark, street lights unlit15 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A171 crashes

On the A171, 46% of collisions happened where the speed limit was 30 mph and 62% on a dry road surface.

Speed limit at the scene

  • 10 mph1 (under 0.1%)
  • 20 mph1 (under 0.1%)
  • 30 mph2,231 (46%)
  • 40 mph257 (5.3%)
  • 50 mph121 (2.5%)
  • 60 mph1,860 (39%)
  • 70 mph349 (7.2%)

Weather at the time

  • Fine, no high winds3,669 (76%)
  • Raining, no high winds581 (12%)
  • Fine with high winds163 (3.4%)
  • Fog or mist85 (1.8%)
  • Other292 (6.1%)
  • Not recorded30 (0.6%)

Road surface

  • Dry3,005 (62%)
  • Wet or damp1,550 (32%)
  • Frost or ice141 (2.9%)
  • Snow109 (2.3%)
  • Other9 (0.2%)
  • Not recorded6 (0.1%)

Type of road

  • Single carriageway4,047 (84%)
  • Dual carriageway515 (11%)
  • Roundabout234 (4.9%)
  • One way street or slip road17 (0.4%)
  • Not recorded7 (0.1%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A171 crashes

Car occupants make up 64% of the people killed or injured on the A171, followed by motorcyclists (12%).

Casualties by road user

  • Car occupant4,845 (64%)
  • Motorcyclist934 (12%)
  • Pedestrian689 (9.2%)
  • Cyclist379 (5%)
  • Van occupant269 (3.6%)
  • Bus or coach occupant146 (1.9%)
  • Goods vehicle occupant (over 3.5 tonnes)81 (1.1%)
  • Other169 (2.2%)

Vehicles involved

  • Car6,525 (72%)
  • Motorcycle898 (9.9%)
  • Van or goods vehicle up to 3.5 tonnes456 (5%)
  • Pedal cycle394 (4.4%)
  • Goods vehicle over 3.5 tonnes314 (3.5%)
  • Bus or coach196 (2.2%)
  • Other251 (2.8%)
  • Not recorded1 (under 0.1%)

Casualties by age

  • 0 to 5166 (2.2%)
  • 6 to 10299 (4%)
  • 11 to 15438 (5.8%)
  • 16 to 201,338 (18%)
  • 21 to 25849 (11%)
  • 26 to 351,255 (17%)
  • 36 to 451,064 (14%)
  • 46 to 55777 (10%)
  • 56 to 65595 (7.9%)
  • 66 to 75428 (5.7%)
  • Over 75291 (3.9%)
  • Not recorded12 (0.2%)

Drivers, passengers and pedestrians

  • Driver or rider4,105 (55%)
  • Passenger2,718 (36%)
  • Pedestrian689 (9.2%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A171

Map of the 25 most recent crashes on the A171

Use the arrow keys to move the map and the plus and minus keys to zoom.

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A171 crashes by council area

Collisions on the A171 were recorded in 3 council areas. North Yorkshire has the most, with 2,405, followed by Redcar and Cleveland (1,536) and Middlesbrough (878).

Collisions on the A171 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stNorth Yorkshire2,4053,94576831
2ndRedcar and Cleveland1,5362,45853318
3rdMiddlesbrough8781,10812136

A171 crashes by town

Collisions on the A171 were recorded in 4 towns and built-up areas, led by Middlesbrough (1,122) and Scarborough (459).

Recent crashes on the A171

These are the 25 most recent collisions on the A171, from 9 July to 31 December 2025.

Severity