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CrashStats

B4578 accidents: crash map and statistics

Police recorded 33 collisions on the B4578 from 1979 to 2025, with 42 casualties. Of those crashes, none were fatal and 7 were serious.

In 2025 there was 1 collision on the B4578, level with 2024, with 1 casualty.

Collisions since 1979
33
4,850th highest of 4,923 roads
Casualties
42
1.27 per collision
Fatal collisions
0
No one killed
Serious collisions
7
8 seriously injured
Collisions in 2025
1
Level with 2024
Casualties in 2025
1
Down 50% on 2024

Crash severity on the B4578

None of the 33 collisions on the B4578 were fatal, and 21% were serious (18% across Great Britain).

Collisions by severity, 1979 to 2025

  • Fatal00%
  • Serious721%
  • Slight2679%

Where the B4578 ranks among 4,923 roads

Most collisions
4,850th
Most casualties
4,867th
Most fatal collisions
4,444th
Most serious collisions
4,768th

B4578 accidents by year

Collisions on the B4578 peaked at 5 in 1983 and were down to 1 in 2025.

Collisions and casualties on the B4578, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202511
202412
202300
202211
202100
202011
201900
201800
201700
201600
201500
201400
201300
201200
201100
201011
200900
200811
200711
200622
200500
200435
200312
200222
200122
200024
199900
199813
199700
199600
199500
199400
199300
199211
199100
199000
198912
198800
198700
198600
198522
198411
198355
198200
198100
198011
197922

When crashes happen on the B4578

Monday has the most collisions on the B4578 (8), and 3pm to 6pm is the busiest time of day (7).

Collisions by day of the week

  • Monday8 (24%)
  • Tuesday7 (21%)
  • Wednesday1 (3%)
  • Thursday3 (9.1%)
  • Friday5 (15%)
  • Saturday4 (12%)
  • Sunday5 (15%)

Collisions by time of day

  • Midnight to 3am1 (3%)
  • 3am to 6am0 (0%)
  • 6am to 9am5 (15%)
  • 9am to noon5 (15%)
  • Noon to 3pm5 (15%)
  • 3pm to 6pm7 (21%)
  • 6pm to 9pm6 (18%)
  • 9pm to midnight4 (12%)

Collisions by month

  • January1 (3%)
  • February3 (9.1%)
  • March1 (3%)
  • April4 (12%)
  • May3 (9.1%)
  • June3 (9.1%)
  • July5 (15%)
  • August5 (15%)
  • September2 (6.1%)
  • October2 (6.1%)
  • November2 (6.1%)
  • December2 (6.1%)

Light conditions at the time

  • Daylight26 (79%)
  • Dark, no street lighting5 (15%)
  • Dark, street lights lit2 (6.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B4578 crashes

On the B4578, 88% of collisions happened where the speed limit was 60 mph and 61% on a dry road surface.

Speed limit at the scene

  • 30 mph4 (12%)
  • 60 mph29 (88%)

Weather at the time

  • Fine, no high winds25 (76%)
  • Raining, no high winds5 (15%)
  • Raining with high winds1 (3%)
  • Other2 (6.1%)

Road surface

  • Dry20 (61%)
  • Wet or damp13 (39%)

Type of road

  • Single carriageway32 (97%)
  • Dual carriageway1 (3%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B4578 crashes

Car occupants make up 71% of the people killed or injured on the B4578, followed by motorcyclists (9.5%).

Casualties by road user

  • Car occupant30 (71%)
  • Motorcyclist4 (9.5%)
  • Cyclist2 (4.8%)
  • Pedestrian2 (4.8%)
  • Van occupant2 (4.8%)
  • Goods vehicle occupant (over 3.5 tonnes)1 (2.4%)
  • Other vehicle occupant1 (2.4%)

Vehicles involved

  • Car41 (76%)
  • Motorcycle5 (9.3%)
  • Other vehicle2 (3.7%)
  • Pedal cycle2 (3.7%)
  • Van or goods vehicle up to 3.5 tonnes2 (3.7%)
  • Agricultural vehicle1 (1.9%)
  • Goods vehicle over 3.5 tonnes1 (1.9%)

Casualties by age

  • 0 to 51 (2.4%)
  • 11 to 152 (4.8%)
  • 16 to 207 (17%)
  • 21 to 2511 (26%)
  • 26 to 356 (14%)
  • 36 to 453 (7.1%)
  • 46 to 555 (12%)
  • 56 to 651 (2.4%)
  • 66 to 752 (4.8%)
  • Over 754 (9.5%)

Drivers, passengers and pedestrians

  • Driver or rider32 (76%)
  • Passenger8 (19%)
  • Pedestrian2 (4.8%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B4578

Map of the 25 most recent crashes on the B4578

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

  • 25 crashes
  • Serious
  • Slight

B4578 crashes by council area

Of the 33 collisions on the B4578, 32 were in Ceredigion.

Collisions on the B4578 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stCeredigion324107

Recent crashes on the B4578

These are the 25 most recent collisions on the B4578, from 15 September 1984 to 14 February 2025.

Severity