A-road
A374 traffic and collisions
The A374 is an A-road of 18.3 miles, from Plymouth to Cornwall. This page covers its traffic at 18 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 104m vehicle miles
- Average daily traffic 15,553 vehicles a day, both directions
- Busiest section 59,713 B3214 to A38
- HGV share 2.0% of vehicle miles
- Traffic since 2019 −2.3% same count points
- Collisions, 2021 to 2025 214 43.3 per 100m vehicle miles
How busy is the A374?
On an average day in 2025, 15,553 vehicles passed each point on the A374, counting both directions. The busiest section is B3214 to A38 (Plymouth), with 59,713 a day; the quietest listed is B3249 to A387, with 6,142.
Busiest sections, 2025
B3214 to A38 carries 3.8 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| B3214 to A38 Plymouth · 0.8 mi · HGVs 2.2% | 59,713 |
| B3214 mid-junction to Gdynia Way Plymouth · 1.1 mi · HGVs 3.2% | 47,427 |
| Tothill Road roundabout to Charles St roundabout Plymouth · 0.6 mi · HGVs 0.7% | 35,649 |
| Devonport to A374 Roundabout (with Saltash Road and Cobourg Street) Plymouth · 3.1 mi · HGVs 1.1% | 14,162 |
| A387 to A38 Cornwall · 1.3 mi · HGVs 2.4% | 8,795 |
| Thanckes Drive, Torpoint to B3249 Cornwall · 7.3 mi · HGVs 2.4% | 6,861 |
| B3249 to A387 Cornwall · 0.8 mi · HGVs 2.7% | 6,142 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Plymouth to Cornwall · 18.3 miles
A374 traffic and collisions by section
14 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 4 short link roads and spurs (1.3 miles) count in the road’s totals but are not listed.
Sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | B3214 to A38Plymouth | 59,713 | 8 |
| 2 | B3214 mid-junction to Gdynia WayPlymouth | 47,427 | 14 |
| 3 | Gdynia Way to Hele's TerracePlymouth | 35,294 | 0 |
| 4 | Hele's Terrace to A379Plymouth | 976 | fewer than 3 |
| 5 | A379 to Tothill Road roundaboutPlymouth | 13,320 | 9 |
| 6 | Tothill Road roundabout to Charles St roundaboutPlymouth | 35,649 | 17 |
| 7 | Cobourg St roundabout to Exeter St roundaboutPlymouth | 29,001 | 15 |
| 8 | Western Approach roundabout to Charles St roundaboutPlymouth | 21,853 | 10 |
| 9 | Devonport to A374 Roundabout (with Saltash Road and Cobourg Street)Plymouth | 14,162 | 76 |
| 10 | A374 split to ferryCornwall | 1,432 | 9 |
| 11 | Thanckes Drive to A374 Fore St/Harvey StCornwall | 6,783 | 9 |
| 12 | Thanckes Drive, Torpoint to B3249Cornwall | 6,861 | 21 |
| 13 | B3249 to A387Cornwall | 6,142 | fewer than 3 |
| 14 | A387 to A38Cornwall | 8,795 | 5 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A374 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.
A374 traffic by vehicle type
Cars and taxis make up 78.5% of the vehicle miles on the A374. HGVs account for 2.0%, rising to 3.2% on B3214 mid-junction to Gdynia Way.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 2.9% |
| 2001 | 3.3% |
| 2002 | 3.1% |
| 2003 | 3.2% |
| 2004 | 3.1% |
| 2005 | 3.3% |
| 2006 | 3.2% |
| 2007 | 3.2% |
| 2008 | 3.3% |
| 2009 | 3.1% |
| 2010 | 3.3% |
| 2011 | 3.2% |
| 2012 | 3.0% |
| 2013 | 2.9% |
| 2014 | 2.7% |
| 2015 | 2.7% |
| 2016 | 2.4% |
| 2017 | 2.5% |
| 2018 | 2.5% |
| 2019 | 2.4% |
| 2020 | 2.6% |
| 2021 | 2.4% |
| 2022 | 2.3% |
| 2023 | 2.2% |
| 2024 | 2.2% |
| 2025 | 2.0% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A374 traffic trend
Traffic on the A374 came to 104 million vehicle miles in 2025. At the count points present in both years, it is down 2.3% on 2019, before the pandemic, and about the same as in 2015.
Vehicle miles a year
Like for like, traffic is down 1.7% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 99m |
| 2001 | 90m |
| 2002 | 98m |
| 2003 | 101m |
| 2004 | 101m |
| 2005 | 100m |
| 2006 | 107m |
| 2007 | 102m |
| 2008 | 104m |
| 2009 | 98m |
| 2010 | 101m |
| 2011 | 99m |
| 2012 | 94m |
| 2013 | 96m |
| 2014 | 99m |
| 2015 | 98m |
| 2016 | 102m |
| 2017 | 103m |
| 2018 | 103m |
| 2019 | 104m |
| 2020 | 74m |
| 2021 | 88m |
| 2022 | 99m |
| 2023 | 100m |
| 2024 | 103m |
| 2025 | 104m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 15,654 |
| 2001 | 14,320 |
| 2002 | 15,575 |
| 2003 | 15,944 |
| 2004 | 15,971 |
| 2005 | 15,818 |
| 2006 | 16,942 |
| 2007 | 16,161 |
| 2008 | 16,500 |
| 2009 | 15,578 |
| 2010 | 16,000 |
| 2011 | 15,704 |
| 2012 | 14,862 |
| 2013 | 15,221 |
| 2014 | 15,733 |
| 2015 | 15,437 |
| 2016 | 16,141 |
| 2017 | 16,303 |
| 2018 | 15,920 |
| 2019 | 16,158 |
| 2020 | 11,388 |
| 2021 | 13,662 |
| 2022 | 14,785 |
| 2023 | 14,936 |
| 2024 | 15,438 |
| 2025 | 15,553 |
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 (83.1% of today’s road for 2019). In 2025, 2 of the 18 count points were counted; DfT estimated the rest from earlier counts and local trends.
A374 collisions
Police recorded 214 collisions with the A374 as the first road from 2021 to 2025, 52 of them fatal or serious, including 3 fatal. That is 43.3 per 100 million vehicle miles, higher than the 31.5 for all A-roads in Great Britain. On average there were 2.3 a year for each mile of road.
Reported collisions by year
Up 4.4% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 34 | 11 |
| 2022 | 32 | 8 |
| 2023 | 36 | 10 |
| 2024 | 24 | 12 |
| 2025 | 36 | 11 |
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 |
|---|---|
| Devonport to A374 Roundabout (with Saltash Road and Cobourg Street) Plymouth · 76 collisions | 120.6 |
| Tothill Road roundabout to Charles St roundabout Plymouth · 17 collisions | 50.5 |
| Thanckes Drive, Torpoint to B3249 Cornwall · 21 collisions | 23.9 |
| B3214 mid-junction to Gdynia Way Plymouth · 14 collisions | 15.2 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 44 collisions were recorded at junctions where the A374 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 A374
In route order. Each is the highway authority DfT files the count points under.
- Plymouth
- Cornwall
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 | 18 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 214 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.