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CrashStats

A4042 accidents: crash map and statistics

Police recorded 3,110 collisions on the A4042 from 1979 to 2025, with 4,345 casualties. Of those crashes, 77 were fatal and 676 serious, and 82 people were killed.

In 2025 there were 19 collisions on the A4042, down 17% from 23 in 2024, with 29 casualties.

Collisions since 1979
3,110
371st highest of 4,923 roads
Casualties
4,345
1.40 per collision
Fatal collisions
77
82 people killed
Serious collisions
676
819 seriously injured
Collisions in 2025
19
Down 17% on 2024
Casualties in 2025
29
Up 7% on 2024

Crash severity on the A4042

On the A4042, 2.5% of collisions were fatal and 22% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal772.5%
  • Serious67622%
  • Slight2,35776%

Where the A4042 ranks among 4,923 roads

Most collisions
371st
Most casualties
351st
Most fatal collisions
276th
Most serious collisions
296th

A4042 accidents by year

Collisions on the A4042 peaked at 122 in 1991 and were down to 19 in 2025.

Collisions and casualties on the A4042, 1979 to 2025

  • Collisions
  • Collisions in 2025: 19
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251929
20242327
20233150
20222126
20212336
20203142
20193242
20183143
20171622
20162637
20153755
20145270
20134156
20123550
20113351
20104659
20094871
20083542
20075469
20065073
20056598
20046288
200366101
200278114
20015476
20006189
199987125
199892118
199777122
199677110
199578112
19947499
199375114
1992100129
1991122167
1990116157
1989104149
198891118
198790126
1986119171
1985100145
198499138
1983110148
1982105145
1981112154
198098129
1979114153

When crashes happen on the A4042

Friday has the most collisions on the A4042 (519), and 3pm to 6pm is the busiest time of day (743).

Collisions by day of the week

  • Monday455 (15%)
  • Tuesday473 (15%)
  • Wednesday467 (15%)
  • Thursday410 (13%)
  • Friday519 (17%)
  • Saturday456 (15%)
  • Sunday330 (11%)

Collisions by time of day

  • Midnight to 3am113 (3.6%)
  • 3am to 6am54 (1.7%)
  • 6am to 9am370 (12%)
  • 9am to noon489 (16%)
  • Noon to 3pm593 (19%)
  • 3pm to 6pm743 (24%)
  • 6pm to 9pm436 (14%)
  • 9pm to midnight312 (10%)

Collisions by month

  • January248 (8%)
  • February234 (7.5%)
  • March245 (7.9%)
  • April242 (7.8%)
  • May237 (7.6%)
  • June263 (8.5%)
  • July261 (8.4%)
  • August249 (8%)
  • September267 (8.6%)
  • October274 (8.8%)
  • November313 (10%)
  • December277 (8.9%)

Light conditions at the time

  • Daylight2,240 (72%)
  • Dark, street lights lit669 (22%)
  • Dark, no street lighting149 (4.8%)
  • Dark, lighting unknown33 (1.1%)
  • Dark, street lights unlit19 (0.6%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4042 crashes

On the A4042, 35% of collisions happened where the speed limit was 30 mph and 66% on a dry road surface.

Speed limit at the scene

  • 20 mph9 (0.3%)
  • 30 mph1,084 (35%)
  • 40 mph567 (18%)
  • 50 mph87 (2.8%)
  • 60 mph616 (20%)
  • 70 mph747 (24%)

Weather at the time

  • Fine, no high winds2,355 (76%)
  • Raining, no high winds484 (16%)
  • Raining with high winds56 (1.8%)
  • Fine with high winds38 (1.2%)
  • Other147 (4.7%)
  • Not recorded30 (1%)

Road surface

  • Dry2,040 (66%)
  • Wet or damp1,012 (33%)
  • Frost or ice39 (1.3%)
  • Snow9 (0.3%)
  • Flood over 3cm deep7 (0.2%)
  • Oil or diesel3 (0.1%)

Type of road

  • Single carriageway1,263 (41%)
  • Dual carriageway1,246 (40%)
  • Roundabout518 (17%)
  • One way street or slip road79 (2.5%)
  • Not recorded4 (0.1%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4042 crashes

Car occupants make up 67% of the people killed or injured on the A4042, followed by motorcyclists (11%).

Casualties by road user

  • Car occupant2,921 (67%)
  • Motorcyclist495 (11%)
  • Pedestrian438 (10%)
  • Cyclist174 (4%)
  • Van occupant114 (2.6%)
  • Bus or coach occupant71 (1.6%)
  • Other131 (3%)
  • Not recorded1 (under 0.1%)

Vehicles involved

  • Car4,268 (75%)
  • Motorcycle508 (8.9%)
  • Goods vehicle over 3.5 tonnes277 (4.8%)
  • Van or goods vehicle up to 3.5 tonnes217 (3.8%)
  • Pedal cycle179 (3.1%)
  • Bus or coach104 (1.8%)
  • Other163 (2.9%)
  • Not recorded1 (under 0.1%)

Casualties by age

  • 0 to 568 (1.6%)
  • 6 to 10127 (2.9%)
  • 11 to 15155 (3.6%)
  • 16 to 20705 (16%)
  • 21 to 25563 (13%)
  • 26 to 35860 (20%)
  • 36 to 45669 (15%)
  • 46 to 55534 (12%)
  • 56 to 65367 (8.4%)
  • 66 to 75192 (4.4%)
  • Over 7594 (2.2%)
  • Not recorded11 (0.3%)

Drivers, passengers and pedestrians

  • Driver or rider2,583 (59%)
  • Passenger1,324 (30%)
  • Pedestrian438 (10%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4042

Map of the 25 most recent crashes on the A4042

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A4042 crashes by council area

Collisions on the A4042 were recorded in 4 council areas. Newport has the most, with 1,605, followed by Torfaen (1,002) and Monmouthshire (494).

Collisions on the A4042 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stNewport1,6052,09032331
2ndTorfaen1,0021,41219218
3rdMonmouthshire49483326126
4thCaerphilly7801

A4042 crashes by town

Collisions on the A4042 were recorded in 3 towns and built-up areas, led by Newport, Newport (1,039) and Cwmbrân (183).

Recent crashes on the A4042

These are the 25 most recent collisions on the A4042, from 14 October 2024 to 27 November 2025.

Severity