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CrashStats

A4018 accidents: crash map and statistics

Police recorded 3,217 collisions on the A4018 from 1979 to 2025, with 3,835 casualties. Of those crashes, 36 were fatal and 473 serious, and 36 people were killed.

In 2025 there were 45 collisions on the A4018, up 10% from 41 in 2024, with 53 casualties.

Collisions since 1979
3,217
352nd highest of 4,923 roads
Casualties
3,835
1.19 per collision
Fatal collisions
36
36 people killed
Serious collisions
473
529 seriously injured
Collisions in 2025
45
Up 10% on 2024
Casualties in 2025
53
Up 6% on 2024

Crash severity on the A4018

On the A4018, 1.1% of collisions were fatal and 15% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal361.1%
  • Serious47315%
  • Slight2,70884%

Where the A4018 ranks among 4,923 roads

Most collisions
352nd
Most casualties
406th
Most fatal collisions
577th
Most serious collisions
451st

A4018 accidents by year

Collisions on the A4018 peaked at 114 in 1986 and were down to 45 in 2025.

Collisions and casualties on the A4018, 1979 to 2025

  • Collisions
  • Collisions in 2025: 45
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20254553
20244150
20233739
20225155
20214242
20202733
20194145
20185563
20173443
20165255
20153646
20145054
20135160
20125370
20115359
20105573
20097181
20086267
20078193
20067693
200587106
20048697
20037796
200279102
200194113
20008092
1999100121
199898114
19977498
19968388
19956876
19946879
19935163
19922932
19916273
19907387
19897392
198895110
19877184
1986114136
198588107
1984104125
1983111138
1982100131
19817590
198086117
19797894

When crashes happen on the A4018

Friday has the most collisions on the A4018 (547), and 3pm to 6pm is the busiest time of day (707).

Collisions by day of the week

  • Monday425 (13%)
  • Tuesday470 (15%)
  • Wednesday486 (15%)
  • Thursday476 (15%)
  • Friday547 (17%)
  • Saturday496 (15%)
  • Sunday317 (9.9%)

Collisions by time of day

  • Midnight to 3am237 (7.4%)
  • 3am to 6am50 (1.6%)
  • 6am to 9am354 (11%)
  • 9am to noon412 (13%)
  • Noon to 3pm533 (17%)
  • 3pm to 6pm707 (22%)
  • 6pm to 9pm500 (16%)
  • 9pm to midnight424 (13%)

Collisions by month

  • January255 (7.9%)
  • February241 (7.5%)
  • March247 (7.7%)
  • April250 (7.8%)
  • May243 (7.6%)
  • June250 (7.8%)
  • July267 (8.3%)
  • August243 (7.6%)
  • September264 (8.2%)
  • October331 (10%)
  • November328 (10%)
  • December298 (9.3%)

Light conditions at the time

  • Daylight2,085 (65%)
  • Dark, street lights lit1,033 (32%)
  • Dark, lighting unknown50 (1.6%)
  • Dark, no street lighting33 (1%)
  • Dark, street lights unlit16 (0.5%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4018 crashes

On the A4018, 78% of collisions happened where the speed limit was 30 mph and 74% on a dry road surface.

Speed limit at the scene

  • 20 mph362 (11%)
  • 30 mph2,508 (78%)
  • 40 mph172 (5.3%)
  • 50 mph65 (2%)
  • 60 mph36 (1.1%)
  • 70 mph74 (2.3%)

Weather at the time

  • Fine, no high winds2,545 (79%)
  • Raining, no high winds406 (13%)
  • Raining with high winds48 (1.5%)
  • Fine with high winds38 (1.2%)
  • Other105 (3.3%)
  • Not recorded75 (2.3%)

Road surface

  • Dry2,372 (74%)
  • Wet or damp817 (25%)
  • Frost or ice20 (0.6%)
  • Snow4 (0.1%)
  • Not recorded4 (0.1%)

Type of road

  • Single carriageway2,251 (70%)
  • Dual carriageway446 (14%)
  • One way street or slip road266 (8.3%)
  • Roundabout227 (7.1%)
  • Not recorded27 (0.8%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4018 crashes

Car occupants make up 36% of the people killed or injured on the A4018, followed by pedestrians (23%).

Casualties by road user

  • Car occupant1,381 (36%)
  • Pedestrian869 (23%)
  • Cyclist783 (20%)
  • Motorcyclist590 (15%)
  • Bus or coach occupant159 (4.1%)
  • Van occupant21 (0.5%)
  • Other24 (0.6%)
  • Not recorded8 (0.2%)

Vehicles involved

  • Car3,677 (65%)
  • Pedal cycle798 (14%)
  • Motorcycle642 (11%)
  • Bus or coach185 (3.3%)
  • Van or goods vehicle up to 3.5 tonnes120 (2.1%)
  • Taxi or private hire car116 (2.1%)
  • Goods vehicle over 3.5 tonnes60 (1.1%)
  • Other49 (0.9%)

Casualties by age

  • 0 to 536 (0.9%)
  • 6 to 1048 (1.3%)
  • 11 to 15123 (3.2%)
  • 16 to 20843 (22%)
  • 21 to 25724 (19%)
  • 26 to 35859 (22%)
  • 36 to 45455 (12%)
  • 46 to 55310 (8.1%)
  • 56 to 65212 (5.5%)
  • 66 to 75116 (3%)
  • Over 7589 (2.3%)
  • Not recorded20 (0.5%)

Drivers, passengers and pedestrians

  • Driver or rider2,269 (59%)
  • Pedestrian869 (23%)
  • Passenger697 (18%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4018

Map of the 25 most recent crashes on the A4018

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

  • 25 crashes
  • Serious
  • Slight

A4018 crashes by council area

Collisions on the A4018 were recorded in 2 council areas. Bristol has the most, with 2,966, followed by South Gloucestershire (249).

Collisions on the A4018 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stBristol2,9663,49331424
2ndSouth Gloucestershire249340549

A4018 crashes by town

Collisions on the A4018 were recorded in 2 towns and built-up areas, led by Bristol (2,733) and Patchway (89).

Recent crashes on the A4018

These are the 25 most recent collisions on the A4018, from 26 July to 24 December 2025.

Severity