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CrashStats

B4100 accidents: crash map and statistics

Police recorded 1,727 collisions on the B4100 from 1980 to 2025, with 2,507 casualties. Of those crashes, 35 were fatal and 356 serious, and 36 people were killed.

In 2025 there were 38 collisions on the B4100, down 7% from 41 in 2024, with 49 casualties.

Collisions since 1980
1,727
666th highest of 4,923 roads
Casualties
2,507
1.45 per collision
Fatal collisions
35
36 people killed
Serious collisions
356
429 seriously injured
Collisions in 2025
38
Down 7% on 2024
Casualties in 2025
49
Down 17% on 2024

Crash severity on the B4100

On the B4100, 2% of collisions were fatal and 21% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1980 to 2025

  • Fatal352%
  • Serious35621%
  • Slight1,33677%

Where the B4100 ranks among 4,923 roads

Most collisions
666th
Most casualties
620th
Most fatal collisions
590th
Most serious collisions
607th

B4100 accidents by year

Collisions on the B4100 peaked at 71 in 2008 and were down to 38 in 2025.

Collisions and casualties on the B4100, 1980 to 2025

  • Collisions
  • Collisions in 2025: 38
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20253849
20244159
20234456
20223444
20213349
20204470
20195365
20185476
20175172
20164761
20154562
20146692
20135681
20124764
20115785
20106484
20096283
200871103
20075478
20066499
20055071
20043785
20035278
20025074
20015378
20004768
19995581
19986599
199763101
19965484
19954566
19944262
19934153
19923352
19911422
199000
198900
198800
198700
198600
198500
198400
198300
198200
198100
198011

When crashes happen on the B4100

Friday has the most collisions on the B4100 (320), and 3pm to 6pm is the busiest time of day (418).

Collisions by day of the week

  • Monday212 (12%)
  • Tuesday233 (13%)
  • Wednesday267 (15%)
  • Thursday259 (15%)
  • Friday320 (19%)
  • Saturday251 (15%)
  • Sunday185 (11%)

Collisions by time of day

  • Midnight to 3am78 (4.5%)
  • 3am to 6am41 (2.4%)
  • 6am to 9am243 (14%)
  • 9am to noon234 (14%)
  • Noon to 3pm287 (17%)
  • 3pm to 6pm418 (24%)
  • 6pm to 9pm278 (16%)
  • 9pm to midnight148 (8.6%)

Collisions by month

  • January160 (9.3%)
  • February126 (7.3%)
  • March152 (8.8%)
  • April134 (7.8%)
  • May125 (7.2%)
  • June158 (9.1%)
  • July157 (9.1%)
  • August129 (7.5%)
  • September147 (8.5%)
  • October130 (7.5%)
  • November159 (9.2%)
  • December150 (8.7%)

Light conditions at the time

  • Daylight1,219 (71%)
  • Dark, street lights lit286 (17%)
  • Dark, no street lighting208 (12%)
  • Dark, lighting unknown9 (0.5%)
  • Dark, street lights unlit5 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4100 crashes

On the B4100, 45% of collisions happened where the speed limit was 30 mph and 65% on a dry road surface.

Speed limit at the scene

  • 20 mph47 (2.7%)
  • 30 mph779 (45%)
  • 40 mph80 (4.6%)
  • 50 mph104 (6%)
  • 60 mph717 (42%)

Weather at the time

  • Fine, no high winds1,381 (80%)
  • Raining, no high winds207 (12%)
  • Fine with high winds24 (1.4%)
  • Fog or mist20 (1.2%)
  • Other67 (3.9%)
  • Not recorded28 (1.6%)

Road surface

  • Dry1,121 (65%)
  • Wet or damp557 (32%)
  • Frost or ice41 (2.4%)
  • Flood over 3cm deep2 (0.1%)
  • Other4 (0.2%)
  • Not recorded2 (0.1%)

Type of road

  • Single carriageway1,253 (73%)
  • Dual carriageway285 (17%)
  • Roundabout95 (5.5%)
  • One way street or slip road90 (5.2%)
  • Not recorded4 (0.2%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4100 crashes

Car occupants make up 65% of the people killed or injured on the B4100, followed by pedestrians (11%).

Casualties by road user

  • Car occupant1,634 (65%)
  • Pedestrian278 (11%)
  • Motorcyclist202 (8.1%)
  • Cyclist137 (5.5%)
  • Bus or coach occupant116 (4.6%)
  • Van occupant65 (2.6%)
  • Other72 (2.9%)
  • Not recorded3 (0.1%)

Vehicles involved

  • Car2,340 (75%)
  • Motorcycle204 (6.5%)
  • Van or goods vehicle up to 3.5 tonnes144 (4.6%)
  • Pedal cycle143 (4.6%)
  • Bus or coach108 (3.5%)
  • Taxi or private hire car70 (2.2%)
  • Other108 (3.5%)
  • Not recorded4 (0.1%)

Casualties by age

  • 0 to 533 (1.3%)
  • 6 to 1055 (2.2%)
  • 11 to 15105 (4.2%)
  • 16 to 20383 (15%)
  • 21 to 25337 (13%)
  • 26 to 35548 (22%)
  • 36 to 45380 (15%)
  • 46 to 55252 (10%)
  • 56 to 65173 (6.9%)
  • 66 to 7579 (3.2%)
  • Over 7575 (3%)
  • Not recorded87 (3.5%)

Drivers, passengers and pedestrians

  • Driver or rider1,577 (63%)
  • Passenger652 (26%)
  • Pedestrian278 (11%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4100

Map of the 25 most recent crashes on the B4100

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

  • 25 crashes
  • Serious
  • Slight

B4100 crashes by council area

Collisions on the B4100 were recorded in 5 council areas. Cherwell has the most, with 713, followed by Birmingham (478) and Stratford-on-Avon (312).

Collisions on the B4100 in each area, 1980 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCherwell71397911114
2ndBirmingham478662477
3rdStratford-on-Avon31248112101
4thWarwick120197432
5thWest Northamptonshire102186430

B4100 crashes by town

Collisions on the B4100 were recorded in 4 towns and built-up areas, led by Birmingham (468) and Bicester (210).

Recent crashes on the B4100

These are the 25 most recent collisions on the B4100, from 30 May to 16 December 2025.

Severity