A-road
A371 traffic and collisions
The A371 is an A-road of 36.4 miles, from Somerset to North Somerset. This page covers its traffic at 12 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 98m vehicle miles
- Average daily traffic 7,347 vehicles a day, both directions
- Busiest section 14,431 A368 Banwell to A370
- HGV share 4.3% of vehicle miles
- Traffic since 2019 +4.3% same count points
- Collisions, 2021 to 2025 118 25.0 per 100m vehicle miles
How busy is the A371?
On an average day in 2025, 7,347 vehicles passed each point on the A371, counting both directions. The busiest section is A368 Banwell to A370 (North Somerset), with 14,431 a day; the quietest listed is A359 to B3153, with 5,111.
Busiest sections, 2025
A368 Banwell to A370 carries 2.0 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A368 Banwell to A370 North Somerset · 3.5 mi · HGVs 2.6% | 14,431 |
| A37/A361 to A361 Somerset · 1.4 mi · HGVs 1.7% | 12,648 |
| B3081 to A37 Somerset · 0.9 mi · HGVs 7.5% | 11,839 |
| B3081 to A357 Somerset · 0.9 mi · HGVs 4.0% | 10,083 |
| B3153 to B3081 Somerset · 4.5 mi · HGVs 10.3% | 6,691 |
| A38 Sidcot to A368 Banwell North Somerset · 2.2 mi · HGVs 0.7% | 6,546 |
| A38 to A371 spur immediately west of Fennel Lane Somerset · 0.9 mi · HGVs 3.6% | 6,056 |
| A361 to A39 Somerset · 5.0 mi · HGVs 2.2% | 5,980 |
| A38 Somerset · 10.1 mi · HGVs 2.4% | 5,905 |
| A357 to A359 Somerset · 4.1 mi · HGVs 7.3% | 5,847 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Somerset to North Somerset · 36.4 miles
A371 traffic and collisions by section
11 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 1 short link roads and spurs (0.8 miles) count in the road’s totals but are not listed.
Sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | B3081 to A357Somerset | 10,083 | fewer than 3 |
| 2 | A357 to A359Somerset | 5,847 | 8 |
| 3 | A359 to B3153Somerset | 5,111 | 8 |
| 4 | B3153 to B3081Somerset | 6,691 | 17 |
| 5 | B3081 to A37Somerset | 11,839 | fewer than 3 |
| 6 | A37/A361 to A361Somerset | 12,648 | 12 |
| 7 | A361 to A39Somerset | 5,980 | 12 |
| 8 | A38Somerset | 5,905 | 36 |
| 9 | A38 to A371 spur immediately west of Fennel LaneSomerset | 6,056 | 3 |
| 10 | A38 Sidcot to A368 BanwellNorth Somerset | 6,546 | 3 |
| 11 | A368 Banwell to A370North Somerset | 14,431 | 11 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A371 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.
A371 traffic by vehicle type
Cars and taxis make up 77.7% of the vehicle miles on the A371. HGVs account for 4.3%, rising to 11.8% on A359 to B3153.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 6.2% |
| 2001 | 6.1% |
| 2002 | 6.2% |
| 2003 | 5.6% |
| 2004 | 5.6% |
| 2005 | 5.9% |
| 2006 | 5.5% |
| 2007 | 5.2% |
| 2008 | 5.3% |
| 2009 | 5.0% |
| 2010 | 5.3% |
| 2011 | 5.0% |
| 2012 | 5.0% |
| 2013 | 4.9% |
| 2014 | 4.9% |
| 2015 | 4.9% |
| 2016 | 5.2% |
| 2017 | 5.2% |
| 2018 | 5.3% |
| 2019 | 5.2% |
| 2020 | 6.1% |
| 2021 | 5.5% |
| 2022 | 5.2% |
| 2023 | 5.0% |
| 2024 | 4.6% |
| 2025 | 4.3% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A371 traffic trend
Traffic on the A371 came to 97.6 million vehicle miles in 2025. At the count points present in both years, it is up 4.3% on 2019, before the pandemic, and up 5.5% on 2015.
Vehicle miles a year
Like for like, traffic is up 20.5% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 78m |
| 2001 | 82m |
| 2002 | 82m |
| 2003 | 84m |
| 2004 | 88m |
| 2005 | 85m |
| 2006 | 85m |
| 2007 | 83m |
| 2008 | 82m |
| 2009 | 83m |
| 2010 | 81m |
| 2011 | 84m |
| 2012 | 84m |
| 2013 | 85m |
| 2014 | 87m |
| 2015 | 90m |
| 2016 | 94m |
| 2017 | 92m |
| 2018 | 93m |
| 2019 | 94m |
| 2020 | 73m |
| 2021 | 87m |
| 2022 | 94m |
| 2023 | 96m |
| 2024 | 98m |
| 2025 | 98m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 6,028 |
| 2001 | 6,279 |
| 2002 | 6,323 |
| 2003 | 6,490 |
| 2004 | 6,736 |
| 2005 | 6,538 |
| 2006 | 6,527 |
| 2007 | 6,370 |
| 2008 | 6,330 |
| 2009 | 6,404 |
| 2010 | 6,255 |
| 2011 | 6,477 |
| 2012 | 6,467 |
| 2013 | 6,505 |
| 2014 | 6,645 |
| 2015 | 6,911 |
| 2016 | 7,187 |
| 2017 | 6,998 |
| 2018 | 7,046 |
| 2019 | 7,091 |
| 2020 | 5,487 |
| 2021 | 6,524 |
| 2022 | 7,075 |
| 2023 | 7,188 |
| 2024 | 7,338 |
| 2025 | 7,347 |
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 (72.3% of today’s road for 2019). In 2025, 2 of the 12 count points were counted; DfT estimated the rest from earlier counts and local trends.
A371 collisions
Police recorded 118 collisions with the A371 as the first road from 2021 to 2025, 44 of them fatal or serious, including 4 fatal. That is 25.0 per 100 million vehicle miles, lower than the 31.5 for all A-roads in Great Britain. On average there were 0.7 a year for each mile of road.
Reported collisions by year
Up 30.4% from 2021 to 2025.
| Year | Collisions |
|---|---|
| 2021 | 23 |
| 2022 | 18 |
| 2023 | 18 |
| 2024 | 29 |
| 2025 | 30 |
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 |
|---|---|
| A37/A361 to A361 Somerset · 12 collisions | 40.3 |
| A38 Somerset · 36 collisions | 34.4 |
| B3153 to B3081 Somerset · 17 collisions | 32.6 |
| A361 to A39 Somerset · 12 collisions | 21.3 |
| A368 Banwell to A370 North Somerset · 11 collisions | 12.4 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 26 collisions were recorded at junctions where the A371 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 A371
In route order. Each is the highway authority DfT files the count points under.
- Somerset
- North Somerset
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 | 12 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 118 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.