A-road
A921 traffic and collisions
The A921 is an A-road of 16.1 miles, in Fife. This page covers its traffic at 10 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 64m vehicle miles
- Average daily traffic 10,895 vehicles a day, both directions
- Busiest section 34,560 B981 Dunnikier Way to A92
- HGV share 2.7% of vehicle miles
- Traffic since 2019 −2.1% same count points
- Collisions, 2021 to 2025 45 14.7 per 100m vehicle miles
How busy is the A921?
On an average day in 2025, 10,895 vehicles passed each point on the A921, counting both directions. The busiest section is B981 Dunnikier Way to A92 (Fife), with 34,560 a day; the quietest listed is Cromwell Rd to B923, with 4,113.
Busiest sections, 2025
B981 Dunnikier Way to A92 carries 3.2 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| B981 Dunnikier Way to A92 Fife · 0.7 mi · HGVs 3.3% | 34,560 |
| M90 to Minor Road Fife · 2.9 mi · HGVs 2.8% | 22,038 |
| B925 Millie Street to B981 Dunnikier Way Fife · 1.1 mi · HGVs 3.0% | 16,049 |
| B9157 Invertiel Road to A910 Fife · 0.7 mi · HGVs 1.0% | 11,648 |
| A910 to A955 Fife · 1.2 mi · HGVs 2.0% | 10,615 |
| B923 to B9157 Invertiel Road Fife · 1.6 mi · HGVs 2.7% | 8,160 |
| Minor Road to A909 Fife · 4.7 mi · HGVs 3.8% | 4,602 |
| Cromwell Rd to B923 Fife · 2.9 mi · HGVs 0.7% | 4,113 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
In Fife · 16.1 miles
A921 traffic and collisions by section
10 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length.
Sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | M90 to Minor RoadFife | 22,038 | 8 |
| 2 | Minor Road to A909Fife | 4,602 | 7 |
| 3 | A909 to Kinghorn Rd, BurntislandFife | 5,351 | 0 |
| 4 | Cromwell Rd to B923Fife | 4,113 | 5 |
| 5 | B923 to B9157 Invertiel RoadFife | 8,160 | 0 |
| 6 | B9157 Invertiel Road to A910Fife | 11,648 | fewer than 3 |
| 7 | A910 to A955Fife | 10,615 | fewer than 3 |
| 8 | A955 to B925 Millie StreetFife | 10,752 | fewer than 3 |
| 9 | B925 Millie Street to B981 Dunnikier WayFife | 16,049 | 6 |
| 10 | B981 Dunnikier Way to A92Fife | 34,560 | 13 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A921 as the first road, placed on the nearest section by their recorded position; rates (per 100 million vehicle miles) are shown for sections of half a mile or more with 10 or more.
A921 traffic by vehicle type
Cars and taxis make up 77.8% of the vehicle miles on the A921. HGVs account for 2.7%, rising to 3.8% on Minor Road to A909.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 3.2% |
| 2001 | 3.1% |
| 2002 | 3.5% |
| 2003 | 3.7% |
| 2004 | 3.7% |
| 2005 | 3.8% |
| 2006 | 3.7% |
| 2007 | 3.7% |
| 2008 | 3.9% |
| 2009 | 3.3% |
| 2010 | 3.4% |
| 2011 | 3.2% |
| 2012 | 3.1% |
| 2013 | 3.0% |
| 2014 | 3.0% |
| 2015 | 3.0% |
| 2016 | 3.0% |
| 2017 | 3.1% |
| 2018 | 3.1% |
| 2019 | 3.0% |
| 2020 | 3.4% |
| 2021 | 3.0% |
| 2022 | 2.9% |
| 2023 | 2.8% |
| 2024 | 2.7% |
| 2025 | 2.7% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A921 traffic trend
Traffic on the A921 came to 64 million vehicle miles in 2025. At the count points present in both years, it is down 2.1% on 2019, before the pandemic, and up 0.7% on 2015.
Vehicle miles a year
Like for like, traffic is up 8.2% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 59m |
| 2001 | 58m |
| 2002 | 59m |
| 2003 | 57m |
| 2004 | 61m |
| 2005 | 59m |
| 2006 | 59m |
| 2007 | 58m |
| 2008 | 59m |
| 2009 | 63m |
| 2010 | 63m |
| 2011 | 61m |
| 2012 | 62m |
| 2013 | 61m |
| 2014 | 62m |
| 2015 | 63m |
| 2016 | 65m |
| 2017 | 64m |
| 2018 | 67m |
| 2019 | 65m |
| 2020 | 51m |
| 2021 | 56m |
| 2022 | 61m |
| 2023 | 63m |
| 2024 | 64m |
| 2025 | 64m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 10,050 |
| 2001 | 9,976 |
| 2002 | 10,067 |
| 2003 | 9,777 |
| 2004 | 10,419 |
| 2005 | 10,179 |
| 2006 | 10,136 |
| 2007 | 10,007 |
| 2008 | 10,176 |
| 2009 | 10,767 |
| 2010 | 10,726 |
| 2011 | 10,383 |
| 2012 | 10,556 |
| 2013 | 10,465 |
| 2014 | 10,687 |
| 2015 | 10,784 |
| 2016 | 11,047 |
| 2017 | 10,879 |
| 2018 | 11,314 |
| 2019 | 11,130 |
| 2020 | 8,637 |
| 2021 | 9,502 |
| 2022 | 10,329 |
| 2023 | 10,676 |
| 2024 | 10,831 |
| 2025 | 10,895 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
The chart counts the whole road as it was each year, so new or renumbered stretches move it. The percentage changes compare only count points present in both years. In 2025, 0 of the 10 count points were counted; DfT estimated the rest from earlier counts and local trends.
A921 collisions
Police recorded 45 collisions with the A921 as the first road from 2021 to 2025, 16 of them fatal or serious. That is 14.7 per 100 million vehicle miles, lower than the 31.5 for all A-roads in Great Britain. On average there were 0.6 a year for each mile of road.
Reported collisions by year
Up 42.9% from 2021 to 2025.
| Year | Collisions |
|---|---|
| 2021 | 7 |
| 2022 | 7 |
| 2023 | 12 |
| 2024 | 9 |
| 2025 | 10 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
Sections with the highest collision rates
Per 100 million vehicle miles, 2021 to 2025. Sections of half a mile or more with 10 or more collisions.
| Section | Per 100m vehicle miles |
|---|---|
| B981 Dunnikier Way to A92 Fife · 13 collisions | 31.1 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 11 collisions were recorded at junctions where the A921 was the second road; they are not in the figures above. Fatal or serious uses DfT’s adjusted serious figures. How we count collisions
Council areas on the A921
In route order. Each is the highway authority DfT files the count points under.
- Fife
Roadworks on the A921 in Scotland
The Scottish Road Works Register lists 2 sets of roadworks on the A921 in Scotland, 0 of them under way. 2 close the road, a lane or a slip road. From the extract of 16 September 2026.
-
A921 From Kirkcaldy Road Kinghorn To Kinghorn Road Kirkcaldy, Grange
-
A921 From Kirkcaldy Road Kinghorn To Kinghorn Road Kirkcaldy, Grange
Works in Scotland only, and only where the register records them against the road number. The register publishes one extract a day, so works can start, finish or change after it is taken. Roadworks across Scotland
Source:SRWR Extract of 2026-09-16 Updated
Data sources and methodology
| Figures | Source | Period | Records | Updated |
|---|---|---|---|---|
| Traffic counts and vehicle mix | Road traffic statistics (AADF by count point) Department for Transport Derived statistics UK Motoring | 2000 to 2025 | 10 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 45 reported collisions | 15 September 2026 |
| Roadworks | Scottish Road Works Register open data Scottish Road Works Commissioner | Extract of 2026-09-16 | 22,074 sets of roadworks recorded in Scotland | 16 September 2026 |
- Annual average daily flow (AADF) is the average number of vehicles passing a point on a typical day of the year, both directions combined.
- Vehicle miles are AADF multiplied by link length and 365, summed over every count point link on the road.
- Sections join count point links between junctions, using the link lines in DfT’s major road database.
- STATS19 covers personal injury collisions reported to the police. Damage-only collisions are not included, and not every injury collision is reported.
- Serious and slight figures are DfT’s adjusted estimates, which allow for police forces moving to injury-based reporting.
- Counts of one or two collisions below Great Britain level are shown as “fewer than 3”.
Contains public sector information licensed under the Open Government Licence v3.0.