A-road
A392 traffic and collisions
The A392 is an A-road of 7.5 miles, in Cornwall. This page covers its traffic at 5 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 44m vehicle miles
- Average daily traffic 16,030 vehicles a day, both directions
- Busiest section 26,061 A3058 to A3075
- HGV share 1.0% of vehicle miles
- Traffic since 2019 +23.4% same count points
- Collisions, 2021 to 2025 35 18.2 per 100m vehicle miles
How busy is the A392?
On an average day in 2025, 16,030 vehicles passed each point on the A392, counting both directions. The busiest section is A3058 to A3075 (Cornwall), with 26,061 a day; the quietest listed is A39 to A3058, with 12,358.
Busiest sections, 2025
A3058 to A3075 carries 1.6 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A3058 to A3075 Cornwall · 1.9 mi · HGVs 0.9% | 26,061 |
| A3058 to Pentire Rd/Mount Wise roundabout Cornwall · 0.9 mi · HGVs 0.6% | 12,976 |
| A39 to A3058 Cornwall · 4.1 mi · HGVs 1.4% | 12,358 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
In Cornwall · 7.5 miles
A392 traffic and collisions by section
5 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 | A39 to A3058Cornwall | 12,358 | 16 |
| 2 | A3058 to A3075Cornwall | 26,061 | 9 |
| 3 | A3075 to Penina AveCornwall | 16,080 | fewer than 3 |
| 4 | Penina Ave to A3058Cornwall | 9,648 | fewer than 3 |
| 5 | A3058 to Pentire Rd/Mount Wise roundaboutCornwall | 12,976 | 8 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A392 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.
A392 traffic by vehicle type
Cars and taxis make up 80.3% of the vehicle miles on the A392. HGVs account for 1.0%.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 3.1% |
| 2001 | 3.1% |
| 2002 | 2.9% |
| 2003 | 2.4% |
| 2004 | 2.5% |
| 2005 | 2.5% |
| 2006 | 2.5% |
| 2007 | 2.5% |
| 2008 | 2.4% |
| 2009 | 2.2% |
| 2010 | 2.3% |
| 2011 | 2.2% |
| 2012 | 2.2% |
| 2013 | 2.6% |
| 2014 | 2.5% |
| 2015 | 2.6% |
| 2016 | 2.4% |
| 2017 | 1.9% |
| 2018 | 1.9% |
| 2019 | 1.8% |
| 2020 | 2.1% |
| 2021 | 1.9% |
| 2022 | 1.8% |
| 2023 | 1.7% |
| 2024 | 1.2% |
| 2025 | 1.0% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A392 traffic trend
Traffic on the A392 came to 43.9 million vehicle miles in 2025. At the count points present in both years, it is up 23.4% on 2019, before the pandemic, and up 56.3% on 2015.
Vehicle miles a year
Like for like, traffic is up 149.7% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 18m |
| 2001 | 22m |
| 2002 | 25m |
| 2003 | 28m |
| 2004 | 27m |
| 2005 | 26m |
| 2006 | 27m |
| 2007 | 25m |
| 2008 | 25m |
| 2009 | 26m |
| 2010 | 26m |
| 2011 | 26m |
| 2012 | 27m |
| 2013 | 27m |
| 2014 | 27m |
| 2015 | 28m |
| 2016 | 31m |
| 2017 | 34m |
| 2018 | 34m |
| 2019 | 36m |
| 2020 | 27m |
| 2021 | 34m |
| 2022 | 36m |
| 2023 | 37m |
| 2024 | 42m |
| 2025 | 44m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 6,420 |
| 2001 | 7,912 |
| 2002 | 8,990 |
| 2003 | 10,172 |
| 2004 | 9,947 |
| 2005 | 9,542 |
| 2006 | 9,805 |
| 2007 | 9,126 |
| 2008 | 8,962 |
| 2009 | 9,611 |
| 2010 | 9,523 |
| 2011 | 9,643 |
| 2012 | 9,677 |
| 2013 | 9,851 |
| 2014 | 10,001 |
| 2015 | 10,255 |
| 2016 | 11,425 |
| 2017 | 12,487 |
| 2018 | 12,520 |
| 2019 | 12,988 |
| 2020 | 9,827 |
| 2021 | 12,232 |
| 2022 | 13,205 |
| 2023 | 13,364 |
| 2024 | 15,294 |
| 2025 | 16,030 |
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 5 count points were counted; DfT estimated the rest from earlier counts and local trends.
A392 collisions
Police recorded 35 collisions with the A392 as the first road from 2021 to 2025, 10 of them fatal or serious. That is 18.2 per 100 million vehicle miles, lower than the 31.5 for all A-roads in Great Britain. On average there were 0.9 a year for each mile of road.
Reported collisions by year
Down 36.4% from 2021 to 2025.
| Year | Collisions |
|---|---|
| 2021 | 11 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 7 |
| 2025 | 7 |
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 |
|---|---|
| A39 to A3058 Cornwall · 16 collisions | 21.2 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
Fatal or serious uses DfT’s adjusted serious figures. How we count collisions
Council areas on the A392
In route order. Each is the highway authority DfT files the count points under.
- 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 | 5 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 35 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.