A-road
A644 traffic and collisions
The A644 is an A-road of 15.9 miles, from Kirklees to Bradford. This page covers its traffic at 11 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 75m vehicle miles
- Average daily traffic 12,917 vehicles a day, both directions
- Busiest section 23,199 A62 to M62
- HGV share 4.2% of vehicle miles
- Traffic since 2019 −1.9% same count points
- Collisions, 2021 to 2025 160 45.1 per 100m vehicle miles
How busy is the A644?
On an average day in 2025, 12,917 vehicles passed each point on the A644, counting both directions. The busiest section is A62 to M62 (Calderdale), with 23,199 a day; the quietest listed is A629 to A644 Thornton Rd, with 4,910.
Busiest sections, 2025
A62 to M62 carries 1.8 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A62 to M62 Calderdale · 1.4 mi · HGVs 7.3% | 23,199 |
| A6036 to A647 Calderdale, Bradford · 1.9 mi · HGVs 2.3% | 13,351 |
| A638 to A62 Kirklees · 4.5 mi · HGVs 5.0% | 12,531 |
| A58 to A6036 Calderdale · 1.7 mi · HGVs 1.3% | 12,529 |
| M62 to A641 Calderdale · 1.2 mi · HGVs 7.4% | 11,835 |
| A58(T) to A6025 Calderdale · 2.1 mi · HGVs 2.1% | 11,607 |
| A647 to Fleet Lane Bradford · 0.6 mi · HGVs 2.9% | 11,470 |
| B6145 Thornton Rd to Fleet Lane, Queensbury Bradford · 1.6 mi · HGVs 3.4% | 11,346 |
| A629 to A644 Thornton Rd Bradford · 0.5 mi · HGVs 3.0% | 4,910 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Kirklees to Bradford · 15.9 miles
A644 traffic and collisions by section
9 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 1 short link roads and spurs (0.4 miles) count in the road’s totals but are not listed.
Sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | A638 to A62Kirklees | 12,531 | 82 |
| 2 | A62 to M62Calderdale | 23,199 | 16 |
| 3 | M62 to A641Calderdale | 11,835 | 14 |
| 4 | A58(T) to A6025Calderdale | 11,607 | 8 |
| 5 | A58 to A6036Calderdale | 12,529 | 6 |
| 6 | A6036 to A647Calderdale, Bradford | 13,351 | 16 |
| 7 | A647 to Fleet LaneBradford | 11,470 | 10 |
| 8 | B6145 Thornton Rd to Fleet Lane, QueensburyBradford | 11,346 | 5 |
| 9 | A629 to A644 Thornton RdBradford | 4,910 | fewer than 3 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A644 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.
A644 traffic by vehicle type
Cars and taxis make up 78.6% of the vehicle miles on the A644. HGVs account for 4.2%, rising to 7.4% on M62 to A641.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 6.2% |
| 2001 | 6.0% |
| 2002 | 5.9% |
| 2003 | 5.6% |
| 2004 | 6.3% |
| 2005 | 6.1% |
| 2006 | 5.9% |
| 2007 | 5.5% |
| 2008 | 4.9% |
| 2009 | 4.5% |
| 2010 | 4.5% |
| 2011 | 4.7% |
| 2012 | 4.7% |
| 2013 | 4.7% |
| 2014 | 4.8% |
| 2015 | 4.6% |
| 2016 | 4.4% |
| 2017 | 4.8% |
| 2018 | 4.9% |
| 2019 | 4.9% |
| 2020 | 5.6% |
| 2021 | 5.5% |
| 2022 | 5.1% |
| 2023 | 4.6% |
| 2024 | 4.4% |
| 2025 | 4.2% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A644 traffic trend
Traffic on the A644 came to 75 million vehicle miles in 2025. At the count points present in both years, it is down 1.9% on 2019, before the pandemic, and down 5.7% on 2015.
Vehicle miles a year
Like for like, traffic is down 1.9% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 73m |
| 2001 | 72m |
| 2002 | 75m |
| 2003 | 76m |
| 2004 | 77m |
| 2005 | 76m |
| 2006 | 78m |
| 2007 | 79m |
| 2008 | 75m |
| 2009 | 76m |
| 2010 | 76m |
| 2011 | 76m |
| 2012 | 76m |
| 2013 | 76m |
| 2014 | 78m |
| 2015 | 80m |
| 2016 | 82m |
| 2017 | 76m |
| 2018 | 78m |
| 2019 | 76m |
| 2020 | 61m |
| 2021 | 67m |
| 2022 | 69m |
| 2023 | 71m |
| 2024 | 74m |
| 2025 | 75m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 13,141 |
| 2001 | 13,028 |
| 2002 | 13,213 |
| 2003 | 13,414 |
| 2004 | 13,444 |
| 2005 | 13,352 |
| 2006 | 13,364 |
| 2007 | 13,622 |
| 2008 | 12,971 |
| 2009 | 13,105 |
| 2010 | 13,119 |
| 2011 | 13,163 |
| 2012 | 13,015 |
| 2013 | 13,070 |
| 2014 | 13,430 |
| 2015 | 13,692 |
| 2016 | 14,083 |
| 2017 | 13,125 |
| 2018 | 13,208 |
| 2019 | 13,133 |
| 2020 | 10,854 |
| 2021 | 11,913 |
| 2022 | 12,133 |
| 2023 | 12,489 |
| 2024 | 12,670 |
| 2025 | 12,917 |
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, 3 of the 11 count points were counted; DfT estimated the rest from earlier counts and local trends.
A644 collisions
Police recorded 160 collisions with the A644 as the first road from 2021 to 2025, 41 of them fatal or serious, including 3 fatal. That is 45.1 per 100 million vehicle miles, higher than the 31.5 for all A-roads in Great Britain. On average there were 2.0 a year for each mile of road.
Reported collisions by year
Down 10.8% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 30 | 7 |
| 2022 | 26 | 6 |
| 2023 | 21 | 8 |
| 2024 | 23 | 6 |
| 2025 | 19 | 14 |
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 |
|---|---|
| A638 to A62 Kirklees · 82 collisions | 84.5 |
| A647 to Fleet Lane Bradford · 10 collisions | 82.7 |
| M62 to A641 Calderdale · 14 collisions | 56.1 |
| A6036 to A647 Calderdale, Bradford · 16 collisions | 36.9 |
| A62 to M62 Calderdale · 16 collisions | 26.5 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 29 collisions were recorded at junctions where the A644 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 A644
In route order. Each is the highway authority DfT files the count points under.
- Kirklees
- Calderdale
- Bradford
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 | 11 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 160 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.