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CrashStats

B4577 accidents: crash map and statistics

Police recorded 60 collisions on the B4577 from 1979 to 2025, with 86 casualties. Of those crashes, none were fatal and 20 were serious.

In 2025 there was 1 collision on the B4577, down 50% from 2 in 2024, with 1 casualty.

Collisions since 1979
60
4,476th highest of 4,923 roads
Casualties
86
1.43 per collision
Fatal collisions
0
No one killed
Serious collisions
20
24 seriously injured
Collisions in 2025
1
Down 50% on 2024
Casualties in 2025
1
Down 67% on 2024

Crash severity on the B4577

None of the 60 collisions on the B4577 were fatal, and 33% were serious (18% across Great Britain).

Collisions by severity, 1979 to 2025

  • Fatal00%
  • Serious2033%
  • Slight4067%

Where the B4577 ranks among 4,923 roads

Most collisions
4,476th
Most casualties
4,426th
Most fatal collisions
4,444th
Most serious collisions
4,033rd

B4577 accidents by year

Collisions on the B4577 peaked at 5 in 1985 and were down to 1 in 2025.

Collisions and casualties on the B4577, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202511
202423
202311
202235
202111
202011
201912
201800
201711
201611
201535
201424
201300
201200
201133
201012
200922
200837
200722
200623
200523
200434
200311
200200
200111
200000
199912
199811
199711
199612
199511
199413
199312
199222
199113
199012
198900
198800
198711
198600
198555
198411
198300
198200
198100
198011
197946

When crashes happen on the B4577

Monday has the most collisions on the B4577 (11), and 3pm to 6pm is the busiest time of day (20).

Collisions by day of the week

  • Monday11 (18%)
  • Tuesday4 (6.7%)
  • Wednesday11 (18%)
  • Thursday9 (15%)
  • Friday11 (18%)
  • Saturday10 (17%)
  • Sunday4 (6.7%)

Collisions by time of day

  • Midnight to 3am5 (8.3%)
  • 3am to 6am2 (3.3%)
  • 6am to 9am2 (3.3%)
  • 9am to noon6 (10%)
  • Noon to 3pm8 (13%)
  • 3pm to 6pm20 (33%)
  • 6pm to 9pm10 (17%)
  • 9pm to midnight7 (12%)

Collisions by month

  • January4 (6.7%)
  • February5 (8.3%)
  • March1 (1.7%)
  • April10 (17%)
  • May3 (5%)
  • June5 (8.3%)
  • July8 (13%)
  • August11 (18%)
  • September5 (8.3%)
  • October3 (5%)
  • November2 (3.3%)
  • December3 (5%)

Light conditions at the time

  • Daylight42 (70%)
  • Dark, no street lighting16 (27%)
  • Dark, street lights lit2 (3.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4577 crashes

On the B4577, 87% of collisions happened where the speed limit was 60 mph and 58% on a dry road surface.

Speed limit at the scene

  • 20 mph2 (3.3%)
  • 30 mph5 (8.3%)
  • 40 mph1 (1.7%)
  • 60 mph52 (87%)

Weather at the time

  • Fine, no high winds36 (60%)
  • Raining, no high winds13 (22%)
  • Raining with high winds3 (5%)
  • Fine with high winds2 (3.3%)
  • Other4 (6.7%)
  • Not recorded2 (3.3%)

Road surface

  • Dry35 (58%)
  • Wet or damp24 (40%)
  • Snow1 (1.7%)

Type of road

  • Single carriageway55 (92%)
  • Dual carriageway3 (5%)
  • One way street or slip road2 (3.3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4577 crashes

Car occupants make up 73% of the people killed or injured on the B4577, followed by motorcyclists (10%).

Casualties by road user

  • Car occupant63 (73%)
  • Motorcyclist9 (10%)
  • Pedestrian4 (4.7%)
  • Van occupant4 (4.7%)
  • Goods vehicle occupant (over 3.5 tonnes)3 (3.5%)
  • Cyclist2 (2.3%)
  • Other vehicle occupant1 (1.2%)

Vehicles involved

  • Car68 (66%)
  • Goods vehicle over 3.5 tonnes12 (12%)
  • Motorcycle8 (7.8%)
  • Van or goods vehicle up to 3.5 tonnes8 (7.8%)
  • Other vehicle4 (3.9%)
  • Pedal cycle2 (1.9%)
  • Bus or coach1 (1%)

Casualties by age

  • 0 to 51 (1.2%)
  • 6 to 104 (4.7%)
  • 11 to 153 (3.5%)
  • 16 to 2015 (17%)
  • 21 to 2512 (14%)
  • 26 to 3512 (14%)
  • 36 to 4510 (12%)
  • 46 to 5513 (15%)
  • 56 to 654 (4.7%)
  • 66 to 759 (10%)
  • Over 753 (3.5%)

Drivers, passengers and pedestrians

  • Driver or rider57 (66%)
  • Passenger25 (29%)
  • Pedestrian4 (4.7%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4577

Map of the 25 most recent crashes on the B4577

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

  • 25 crashes
  • Serious
  • Slight

B4577 crashes by council area

All 60 collisions on the B4577 were in Ceredigion.

Collisions on the B4577 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCeredigion6086020

Recent crashes on the B4577

These are the 25 most recent collisions on the B4577, from 5 November 2008 to 24 April 2025.

Severity