A-road
A643 traffic and collisions
The A643 is an A-road of 16.8 miles, from Kirklees to Leeds. This page covers its traffic at 16 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 75m vehicle miles
- Average daily traffic 12,227 vehicles a day, both directions
- Busiest section 48,962 M621 to A58
- HGV share 1.8% of vehicle miles
- Traffic since 2019 −0.6% same count points
- Collisions, 2021 to 2025 161 44.4 per 100m vehicle miles
How busy is the A643?
On an average day in 2025, 12,227 vehicles passed each point on the A643, counting both directions. The busiest section is M621 to A58 (Leeds), with 48,962 a day; the quietest listed is A651 to A652, with 6,856.
Busiest sections, 2025
M621 to A58 carries 4.0 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| M621 to A58 Leeds · 0.8 mi · HGVs 3.0% | 48,962 |
| A640 to A629 Kirklees · 1.6 mi · HGVs 1.8% | 15,227 |
| A629 to A6107 Kirklees, Calderdale · 1.5 mi · HGVs 1.3% | 13,178 |
| A6110 to M621 Leeds · 0.9 mi · HGVs 1.8% | 12,985 |
| A650 to A6110 Leeds · 2.6 mi · HGVs 0.7% | 12,821 |
| A6107 to A6025 Calderdale · 1.7 mi · HGVs 2.1% | 9,384 |
| A641 to A649 Calderdale, Kirklees · 1.9 mi · HGVs 1.8% | 8,204 |
| A62 to A650 Kirklees, Leeds · 1.7 mi · HGVs 1.5% | 7,723 |
| A649 to A638 mid-junction Kirklees · 1.4 mi · HGVs 1.2% | 7,095 |
| A638 mid-junction to A651 Kirklees · 1.3 mi · HGVs 0.8% | 7,050 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Kirklees to Leeds · 16.8 miles
A643 traffic and collisions by section
13 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 | A640 to A629Kirklees | 15,227 | 6 |
| 2 | A629 to A6107Kirklees, Calderdale | 13,178 | 9 |
| 3 | A6107 to A6025Calderdale | 9,384 | 15 |
| 4 | A6025 to A641Calderdale | 20,672 | 13 |
| 5 | A641 to A649Calderdale, Kirklees | 8,204 | 17 |
| 6 | A649 to A638 mid-junctionKirklees | 7,095 | 12 |
| 7 | A638 mid-junction to A651Kirklees | 7,050 | 9 |
| 8 | A651 to A652Kirklees | 6,856 | 4 |
| 9 | A652 to A62Kirklees | 5,797 | 8 |
| 10 | A62 to A650Kirklees, Leeds | 7,723 | 8 |
| 11 | A650 to A6110Leeds | 12,821 | 24 |
| 12 | A6110 to M621Leeds | 12,985 | 29 |
| 13 | M621 to A58Leeds | 48,962 | 7 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A643 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.
A643 traffic by vehicle type
Cars and taxis make up 83.5% of the vehicle miles on the A643. HGVs account for 1.8%, rising to 3.0% on M621 to A58.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 2.9% |
| 2001 | 2.6% |
| 2002 | 2.3% |
| 2003 | 2.1% |
| 2004 | 2.2% |
| 2005 | 2.2% |
| 2006 | 2.0% |
| 2007 | 2.0% |
| 2008 | 2.0% |
| 2009 | 1.9% |
| 2010 | 1.9% |
| 2011 | 2.2% |
| 2012 | 2.0% |
| 2013 | 1.8% |
| 2014 | 1.8% |
| 2015 | 1.9% |
| 2016 | 1.8% |
| 2017 | 1.7% |
| 2018 | 1.7% |
| 2019 | 1.8% |
| 2020 | 2.1% |
| 2021 | 2.1% |
| 2022 | 2.1% |
| 2023 | 1.9% |
| 2024 | 1.8% |
| 2025 | 1.8% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A643 traffic trend
Traffic on the A643 came to 75 million vehicle miles in 2025. At the count points present in both years, it is down 0.6% on 2019, before the pandemic, and down 4.1% on 2015.
Vehicle miles a year
Like for like, traffic is up 7.4% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 67m |
| 2001 | 66m |
| 2002 | 67m |
| 2003 | 68m |
| 2004 | 69m |
| 2005 | 68m |
| 2006 | 64m |
| 2007 | 68m |
| 2008 | 66m |
| 2009 | 67m |
| 2010 | 67m |
| 2011 | 68m |
| 2012 | 66m |
| 2013 | 66m |
| 2014 | 68m |
| 2015 | 73m |
| 2016 | 74m |
| 2017 | 69m |
| 2018 | 71m |
| 2019 | 75m |
| 2020 | 58m |
| 2021 | 68m |
| 2022 | 73m |
| 2023 | 74m |
| 2024 | 74m |
| 2025 | 75m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 11,160 |
| 2001 | 10,877 |
| 2002 | 11,150 |
| 2003 | 11,353 |
| 2004 | 11,508 |
| 2005 | 11,279 |
| 2006 | 10,894 |
| 2007 | 11,462 |
| 2008 | 11,162 |
| 2009 | 11,350 |
| 2010 | 11,257 |
| 2011 | 11,457 |
| 2012 | 11,227 |
| 2013 | 11,122 |
| 2014 | 11,445 |
| 2015 | 12,310 |
| 2016 | 12,496 |
| 2017 | 11,699 |
| 2018 | 11,821 |
| 2019 | 12,304 |
| 2020 | 9,451 |
| 2021 | 11,114 |
| 2022 | 11,835 |
| 2023 | 11,985 |
| 2024 | 12,032 |
| 2025 | 12,227 |
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, 1 of the 16 count points were counted; DfT estimated the rest from earlier counts and local trends.
A643 collisions
Police recorded 161 collisions with the A643 as the first road from 2021 to 2025, 42 of them fatal or serious, including 3 fatal. That is 44.4 per 100 million vehicle miles, higher than the 31.5 for all A-roads in Great Britain. On average there were 1.9 a year for each mile of road.
Reported collisions by year
Down 14.3% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 21 | 7 |
| 2022 | 28 | 8 |
| 2023 | 27 | 13 |
| 2024 | 25 | 8 |
| 2025 | 18 | 6 |
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 |
|---|---|
| A6110 to M621 Leeds · 29 collisions | 127.5 |
| A649 to A638 mid-junction Kirklees · 12 collisions | 68.4 |
| A641 to A649 Calderdale, Kirklees · 17 collisions | 62.2 |
| A6107 to A6025 Calderdale · 15 collisions | 53.2 |
| A650 to A6110 Leeds · 24 collisions | 42.8 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 45 collisions were recorded at junctions where the A643 was the second road; they are not in the figures above. Fatal or serious uses DfT’s adjusted serious figures. 100.0% of the collisions could be placed on a section. How we count collisions
Council areas on the A643
In route order. Each is the highway authority DfT files the count points under.
- Kirklees
- Calderdale
- Leeds
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 | 16 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 161 reported collisions | 15 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.