A-road
A345 traffic and collisions
The A345 is an A-road of 27.5 miles, in Wiltshire. This page covers its traffic at 11 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 82m vehicle miles
- Average daily traffic 8,158 vehicles a day, both directions
- Busiest section 17,074 Portway to Waters Rd, Salisbury
- HGV share 2.6% of vehicle miles
- Traffic since 2019 −4.7% same count points
- Collisions, 2021 to 2025 129 33.3 per 100m vehicle miles
How busy is the A345?
On an average day in 2025, 8,158 vehicles passed each point on the A345, counting both directions. The busiest section is Portway to Waters Rd, Salisbury (Wiltshire), with 17,074 a day; the quietest listed is A342 to Rushall Road roundabout, with 3,797.
Busiest sections, 2025
Portway to Waters Rd, Salisbury carries 2.1 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| Portway to Waters Rd, Salisbury Wiltshire · 1.0 mi · HGVs 3.0% | 17,074 |
| A36(T) to Waters Rd Wiltshire · 0.6 mi · HGVs 2.7% | 16,044 |
| A303 to Portway Wiltshire · 6.0 mi · HGVs 3.2% | 14,383 |
| A3028 to A303 Wiltshire · 1.4 mi · HGVs 2.7% | 13,424 |
| A342 S to A3028 Wiltshire · 7.0 mi · HGVs 2.4% | 5,989 |
| Wilcot Rd to A4 Wiltshire · 6.3 mi · HGVs 1.6% | 4,815 |
| B3087 to Newton R/A Wiltshire · 2.9 mi · HGVs 1.9% | 4,162 |
| A342 to Rushall Road roundabout Wiltshire · 1.3 mi · HGVs 0.9% | 3,797 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
In Wiltshire · 27.5 miles
A345 traffic and collisions by section
10 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 | Wilcot Rd to A4Wiltshire | 4,815 | 22 |
| 2 | Wilcot Road to B3087Wiltshire | 6,357 | fewer than 3 |
| 3 | B3087 to Newton R/AWiltshire | 4,162 | 7 |
| 4 | A342 to Rushall Road roundaboutWiltshire | 3,797 | 3 |
| 5 | A342 (N) to A342 (S)Wiltshire | 2,817 | 0 |
| 6 | A342 S to A3028Wiltshire | 5,989 | 21 |
| 7 | A3028 to A303Wiltshire | 13,424 | 13 |
| 8 | A303 to PortwayWiltshire | 14,383 | 38 |
| 9 | Portway to Waters Rd, SalisburyWiltshire | 17,074 | 10 |
| 10 | A36(T) to Waters RdWiltshire | 16,044 | 11 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A345 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.
A345 traffic by vehicle type
Cars and taxis make up 79.4% of the vehicle miles on the A345. HGVs account for 2.6%.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 4.4% |
| 2001 | 3.5% |
| 2002 | 3.6% |
| 2003 | 3.6% |
| 2004 | 3.6% |
| 2005 | 3.3% |
| 2006 | 3.5% |
| 2007 | 3.3% |
| 2008 | 3.2% |
| 2009 | 2.9% |
| 2010 | 3.0% |
| 2011 | 3.0% |
| 2012 | 3.1% |
| 2013 | 3.1% |
| 2014 | 3.1% |
| 2015 | 3.1% |
| 2016 | 3.0% |
| 2017 | 3.1% |
| 2018 | 3.1% |
| 2019 | 3.1% |
| 2020 | 3.7% |
| 2021 | 3.2% |
| 2022 | 3.0% |
| 2023 | 2.9% |
| 2024 | 2.7% |
| 2025 | 2.6% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A345 traffic trend
Traffic on the A345 came to 81.9 million vehicle miles in 2025. At the count points present in both years, it is down 4.7% on 2019, before the pandemic, and about the same as in 2015.
Vehicle miles a year
Like for like, traffic is up 13.6% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 67m |
| 2001 | 67m |
| 2002 | 70m |
| 2003 | 74m |
| 2004 | 74m |
| 2005 | 73m |
| 2006 | 77m |
| 2007 | 77m |
| 2008 | 77m |
| 2009 | 77m |
| 2010 | 76m |
| 2011 | 77m |
| 2012 | 73m |
| 2013 | 73m |
| 2014 | 75m |
| 2015 | 76m |
| 2016 | 79m |
| 2017 | 82m |
| 2018 | 82m |
| 2019 | 82m |
| 2020 | 62m |
| 2021 | 71m |
| 2022 | 77m |
| 2023 | 78m |
| 2024 | 80m |
| 2025 | 82m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 6,767 |
| 2001 | 6,759 |
| 2002 | 7,069 |
| 2003 | 7,463 |
| 2004 | 7,470 |
| 2005 | 7,400 |
| 2006 | 7,784 |
| 2007 | 7,822 |
| 2008 | 7,767 |
| 2009 | 7,761 |
| 2010 | 7,693 |
| 2011 | 7,776 |
| 2012 | 7,395 |
| 2013 | 7,425 |
| 2014 | 7,609 |
| 2015 | 7,665 |
| 2016 | 7,997 |
| 2017 | 8,328 |
| 2018 | 8,196 |
| 2019 | 8,220 |
| 2020 | 6,207 |
| 2021 | 7,129 |
| 2022 | 7,678 |
| 2023 | 7,838 |
| 2024 | 8,029 |
| 2025 | 8,158 |
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 (78.2% of today’s road for 2019). In 2025, 2 of the 11 count points were counted; DfT estimated the rest from earlier counts and local trends.
A345 collisions
Police recorded 129 collisions with the A345 as the first road from 2021 to 2025, 39 of them fatal or serious, including 3 fatal. That is 33.3 per 100 million vehicle miles, close to 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
Up 26.9% from 2021 to 2025.
| Year | Collisions |
|---|---|
| 2021 | 26 |
| 2022 | 25 |
| 2023 | 16 |
| 2024 | 29 |
| 2025 | 33 |
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 |
|---|---|
| A303 to Portway Wiltshire · 38 collisions | 120.6 |
| A36(T) to Waters Rd Wiltshire · 11 collisions | 64.6 |
| Wilcot Rd to A4 Wiltshire · 22 collisions | 42.3 |
| A3028 to A303 Wiltshire · 13 collisions | 39.4 |
| Portway to Waters Rd, Salisbury Wiltshire · 10 collisions | 33.1 |
| A342 S to A3028 Wiltshire · 21 collisions | 29.1 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 15 collisions were recorded at junctions where the A345 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 A345
In route order. Each is the highway authority DfT files the count points under.
- Wiltshire
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 | 129 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.