A-road
A300 traffic and collisions
The A300 is an A-road of 1.0 miles, from Southwark to City of London. This page covers its traffic at 5 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 2.3m vehicle miles
- Average daily traffic 6,364 vehicles a day, both directions
- Busiest section 10,648 A3201 to A3200
- HGV share 11.4% of vehicle miles
- Traffic since 2019 +3.3% same count points
- Collisions, 2021 to 2025 69 651.9 per 100m vehicle miles
How busy is the A300?
On an average day in 2025, 6,364 vehicles passed each point on the A300, counting both directions. The busiest section is A3201 to A3200 (Southwark), with 10,648 a day; the quietest listed is A3 to A3202, with 1,912.
Busiest sections, 2025
A3201 to A3200 carries 1.7 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A3201 to A3200 Southwark · 0.1 mi · HGVs 7.8% | 10,648 |
| A3200 to A3211 Southwark, City of London · 0.4 mi · HGVs 13.5% | 9,102 |
| A3202 to A3201 Southwark · 0.3 mi · HGVs 10.4% | 4,252 |
| A3 to A3202 Southwark · 0.2 mi · HGVs 5.4% | 1,912 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Southwark to City of London · 1.0 miles
A300 traffic and collisions by section
4 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 | A3 to A3202Southwark | 1,912 | 12 |
| 2 | A3202 to A3201Southwark | 4,252 | 23 |
| 3 | A3201 to A3200Southwark | 10,648 | 12 |
| 4 | A3200 to A3211Southwark, City of London | 9,102 | 22 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A300 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.
A300 traffic by vehicle type
Cars and taxis make up 50.1% of the vehicle miles on the A300. HGVs account for 11.4%, rising to 13.5% on A3200 to A3211.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 5.1% |
| 2001 | 5.1% |
| 2002 | 5.8% |
| 2003 | 5.8% |
| 2004 | 6.1% |
| 2005 | 6.9% |
| 2006 | 5.8% |
| 2007 | 6.1% |
| 2008 | 6.4% |
| 2009 | 6.5% |
| 2010 | 6.5% |
| 2011 | 6.4% |
| 2012 | 7.3% |
| 2013 | 8.0% |
| 2014 | 7.6% |
| 2015 | 10.2% |
| 2016 | 11.7% |
| 2017 | 11.6% |
| 2018 | 10.6% |
| 2019 | 11.4% |
| 2020 | 12.1% |
| 2021 | 12.1% |
| 2022 | 12.0% |
| 2023 | 11.7% |
| 2024 | 11.5% |
| 2025 | 11.4% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A300 traffic trend
Traffic on the A300 came to 2.3 million vehicle miles in 2025. At the count points present in both years, it is up 3.3% on 2019, before the pandemic, and up 5.1% on 2015.
Vehicle miles a year
Like for like, traffic is down 48.7% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 4.5m |
| 2001 | 4.5m |
| 2002 | 4.3m |
| 2003 | 4.3m |
| 2004 | 4.4m |
| 2005 | 3.6m |
| 2006 | 3.9m |
| 2007 | 3.8m |
| 2008 | 3.7m |
| 2009 | 3.6m |
| 2010 | 3.5m |
| 2011 | 3.4m |
| 2012 | 3.1m |
| 2013 | 3.1m |
| 2014 | 3.2m |
| 2015 | 2.2m |
| 2016 | 2.3m |
| 2017 | 2.3m |
| 2018 | 2.2m |
| 2019 | 2.2m |
| 2020 | 1.8m |
| 2021 | 1.9m |
| 2022 | 2.0m |
| 2023 | 2.2m |
| 2024 | 2.2m |
| 2025 | 2.3m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 12,413 |
| 2001 | 12,318 |
| 2002 | 11,686 |
| 2003 | 11,813 |
| 2004 | 12,187 |
| 2005 | 9,744 |
| 2006 | 10,757 |
| 2007 | 10,293 |
| 2008 | 10,071 |
| 2009 | 9,763 |
| 2010 | 9,556 |
| 2011 | 9,219 |
| 2012 | 8,624 |
| 2013 | 8,567 |
| 2014 | 8,702 |
| 2015 | 6,053 |
| 2016 | 6,181 |
| 2017 | 6,181 |
| 2018 | 6,115 |
| 2019 | 6,160 |
| 2020 | 4,842 |
| 2021 | 5,213 |
| 2022 | 5,482 |
| 2023 | 5,967 |
| 2024 | 5,972 |
| 2025 | 6,364 |
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.
A300 collisions
Police recorded 69 collisions with the A300 as the first road from 2021 to 2025, fewer than 3 of them fatal or serious. That is 651.9 per 100 million vehicle miles, higher than the 31.5 for all A-roads in Great Britain. On average there were 13.8 a year for each mile of road.
Reported collisions by year
Up 171.4% from 2021 to 2025.
| Year | Collisions |
|---|---|
| 2021 | 7 |
| 2022 | 10 |
| 2023 | 16 |
| 2024 | 17 |
| 2025 | 19 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 28 collisions were recorded at junctions where the A300 was the second road; they are not in the figures above. Fatal or serious uses DfT’s adjusted serious figures. 100.0% of the collisions could be placed on a section. How we count collisions
Council areas on the A300
In route order. Each is the highway authority DfT files the count points under.
- Southwark
- City of London
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 | 69 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.