A-road
A327 traffic and collisions
The A327 is an A-road of 18.7 miles, from Hampshire to Reading. This page covers its traffic at 13 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 96m vehicle miles
- Average daily traffic 14,037 vehicles a day, both directions
- Busiest section 30,538 A327 split to M3
- HGV share 2.8% of vehicle miles
- Traffic since 2019 −2.4% same count points
- Collisions, 2021 to 2025 161 36.4 per 100m vehicle miles
How busy is the A327?
On an average day in 2025, 14,037 vehicles passed each point on the A327, counting both directions. The busiest section is A327 split to M3 (Hampshire), with 30,538 a day; the quietest listed is B3350 to B3031, with 11,794.
Busiest sections, 2025
A327 split to M3 carries 2.2 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A327 split to M3 Hampshire · 0.7 mi · HGVs 1.7% | 30,538 |
| A325 to Links Way, Southwood Hampshire · 2.6 mi · HGVs 1.8% | 17,623 |
| Links Way to A327 split Hampshire · 0.5 mi · HGVs 1.8% | 16,037 |
| M3 to A30 Hampshire · 2.2 mi · HGVs 3.3% | 15,628 |
| A30 to B3350 Hampshire, Wokingham, Reading · 10.2 mi · HGVs 3.6% | 12,350 |
| B3350 to B3031 Reading · 1.5 mi · HGVs 0.7% | 11,794 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Hampshire to Reading · 18.7 miles
A327 traffic and collisions by section
9 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 2 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 | A325 to Links Way, SouthwoodHampshire | 17,623 | 24 |
| 2 | Links Way to A327 splitHampshire | 16,037 | fewer than 3 |
| 3 | A327 split to M3Hampshire | 30,538 | 4 |
| 4 | M3 to A30Hampshire | 15,628 | 11 |
| 5 | A30 to B3350Hampshire, Wokingham, Reading | 12,350 | 53 |
| 6 | B3350 to B3031Reading | 11,794 | 40 |
| 7 | B3031 to A327splitReading | 16,597 | 5 |
| 8 | A327 split to A4 eastReading | 7,735 | 3 |
| 9 | A4E to A329EReading | 6,988 | 4 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A327 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.
A327 traffic by vehicle type
Cars and taxis make up 81.5% of the vehicle miles on the A327. HGVs account for 2.8%.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 4.2% |
| 2001 | 4.1% |
| 2002 | 3.7% |
| 2003 | 3.3% |
| 2004 | 3.5% |
| 2005 | 3.3% |
| 2006 | 3.1% |
| 2007 | 3.2% |
| 2008 | 3.2% |
| 2009 | 2.8% |
| 2010 | 2.9% |
| 2011 | 2.9% |
| 2012 | 2.9% |
| 2013 | 3.0% |
| 2014 | 3.0% |
| 2015 | 3.0% |
| 2016 | 3.0% |
| 2017 | 3.0% |
| 2018 | 3.0% |
| 2019 | 3.0% |
| 2020 | 3.4% |
| 2021 | 3.4% |
| 2022 | 3.3% |
| 2023 | 2.9% |
| 2024 | 2.8% |
| 2025 | 2.8% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A327 traffic trend
Traffic on the A327 came to 95.8 million vehicle miles in 2025. At the count points present in both years, it is down 2.4% on 2019, before the pandemic, and down 1.1% on 2015.
Vehicle miles a year
Like for like, traffic is up 7.5% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 86m |
| 2001 | 86m |
| 2002 | 89m |
| 2003 | 88m |
| 2004 | 87m |
| 2005 | 90m |
| 2006 | 90m |
| 2007 | 88m |
| 2008 | 86m |
| 2009 | 84m |
| 2010 | 84m |
| 2011 | 85m |
| 2012 | 85m |
| 2013 | 84m |
| 2014 | 86m |
| 2015 | 88m |
| 2016 | 87m |
| 2017 | 83m |
| 2018 | 85m |
| 2019 | 87m |
| 2020 | 67m |
| 2021 | 80m |
| 2022 | 87m |
| 2023 | 89m |
| 2024 | 92m |
| 2025 | 96m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 13,681 |
| 2001 | 13,628 |
| 2002 | 14,137 |
| 2003 | 13,862 |
| 2004 | 13,717 |
| 2005 | 14,254 |
| 2006 | 14,298 |
| 2007 | 13,955 |
| 2008 | 13,637 |
| 2009 | 13,422 |
| 2010 | 13,366 |
| 2011 | 13,528 |
| 2012 | 13,480 |
| 2013 | 13,436 |
| 2014 | 13,716 |
| 2015 | 14,021 |
| 2016 | 13,710 |
| 2017 | 13,290 |
| 2018 | 13,774 |
| 2019 | 13,188 |
| 2020 | 10,205 |
| 2021 | 12,305 |
| 2022 | 13,383 |
| 2023 | 13,827 |
| 2024 | 13,935 |
| 2025 | 14,037 |
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 (35.3% of today’s road for 2019). In 2025, 2 of the 13 count points were counted; DfT estimated the rest from earlier counts and local trends.
A327 collisions
Police recorded 161 collisions with the A327 as the first road from 2021 to 2025, 32 of them fatal or serious. That is 36.4 per 100 million vehicle miles, higher than the 31.5 for all A-roads in Great Britain. On average there were 1.7 a year for each mile of road.
Reported collisions by year
Down 6.3% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 24 | 8 |
| 2022 | 25 | 8 |
| 2023 | 30 | 7 |
| 2024 | 24 | 5 |
| 2025 | 27 | 3 |
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 |
|---|---|
| A325 to Links Way, Southwood Hampshire · 24 collisions | 143.5 |
| B3350 to B3031 Reading · 40 collisions | 115.1 |
| M3 to A30 Hampshire · 11 collisions | 87.7 |
| A30 to B3350 Hampshire, Wokingham, Reading · 53 collisions | 42.9 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 29 collisions were recorded at junctions where the A327 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 A327
In route order. Each is the highway authority DfT files the count points under.
- Hampshire
- Wokingham
- Reading
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 | 13 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 161 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.