A-road
A503 traffic and collisions
The A503 is an A-road of 10.0 miles, from Camden to Waltham Forest. This page covers its traffic at 25 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 59m vehicle miles
- Average daily traffic 16,233 vehicles a day, both directions
- Busiest section 29,133 A105 to A107
- HGV share 3.4% of vehicle miles
- Traffic since 2019 −18.0% same count points
- Collisions, 2021 to 2025 989 301.7 per 100m vehicle miles
How busy is the A503?
On an average day in 2025, 16,233 vehicles passed each point on the A503, counting both directions. The busiest section is A105 to A107 (Hackney), with 29,133 a day; the quietest listed is A1006 to A112, with 7,849.
Busiest sections, 2025
A105 to A107 carries 1.8 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A105 to A107 Hackney · 0.5 mi · HGVs 4.2% | 29,133 |
| A1201 to A105 Hackney · 0.6 mi · HGVs 5.0% | 23,133 |
| St Pancras Way to Camden Park Rd Camden · 0.5 mi · HGVs 3.9% | 22,038 |
| A107 to A10 Hackney, Haringey · 0.9 mi · HGVs 3.7% | 19,396 |
| A10 to A1055 Haringey · 0.6 mi · HGVs 2.6% | 14,328 |
| A112 Chingford Road to A104 Woodford New Road Waltham Forest · 1.2 mi · HGVs 1.7% | 13,272 |
| A1055 to A1006 Haringey, Waltham Forest · 1.0 mi · HGVs 3.3% | 12,880 |
| A1006 to A112 Waltham Forest · 1.1 mi · HGVs 2.7% | 7,849 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Camden to Waltham Forest · 10.0 miles
A503 traffic and collisions by section
19 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 4 short link roads and spurs (1.1 miles) count in the road’s totals but are not listed.
Show all 19 sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | Parkway to Camden High StCamden | 10,821 | 20 |
| 2 | Camden High St to Camden RdCamden | 12,238 | 18 |
| 3 | Bayham St to A400Camden | 21,795 | 17 |
| 4 | A400 to A5202Camden | 21,735 | 21 |
| 5 | A5202 to St Pancras WayCamden | 20,663 | 9 |
| 6 | St Pancras Way to Camden Park RdCamden | 22,038 | 36 |
| 7 | Camden Park Rd to A5200Camden | 18,833 | 4 |
| 8 | A5200 to A5203Islington | 18,770 | 41 |
| 9 | A5203 to A1Islington | 17,736 | 29 |
| 10 | A1 to A103Islington | 13,294 | 41 |
| 11 | A103 Hornsey rd to A503 Isledon RdIslington | 10,474 | 43 |
| 12 | Isledon Rd to Stroud Green Rd/Blackstock RdIslington | 26,834 | 56 |
| 13 | A1201 to A105Hackney | 23,133 | 99 |
| 14 | A105 to A107Hackney | 29,133 | 50 |
| 15 | A107 to A10Hackney, Haringey | 19,396 | 141 |
| 16 | A10 to A1055Haringey | 14,328 | 98 |
| 17 | A1055 to A1006Haringey, Waltham Forest | 12,880 | 61 |
| 18 | A1006 to A112Waltham Forest | 7,849 | 71 |
| 19 | A112 Chingford Road to A104 Woodford New RoadWaltham Forest | 13,272 | 68 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A503 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.
A503 traffic by vehicle type
Cars and taxis make up 66.4% of the vehicle miles on the A503. HGVs account for 3.4%, rising to 5.0% on A1201 to A105.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 3.6% |
| 2001 | 3.7% |
| 2002 | 3.7% |
| 2003 | 3.5% |
| 2004 | 3.8% |
| 2005 | 3.9% |
| 2006 | 3.7% |
| 2007 | 3.5% |
| 2008 | 3.8% |
| 2009 | 3.9% |
| 2010 | 4.0% |
| 2011 | 4.2% |
| 2012 | 4.6% |
| 2013 | 4.8% |
| 2014 | 4.4% |
| 2015 | 4.3% |
| 2016 | 4.3% |
| 2017 | 4.0% |
| 2018 | 3.5% |
| 2019 | 3.1% |
| 2020 | 3.5% |
| 2021 | 3.4% |
| 2022 | 3.7% |
| 2023 | 3.6% |
| 2024 | 3.6% |
| 2025 | 3.4% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A503 traffic trend
Traffic on the A503 came to 59.3 million vehicle miles in 2025. At the count points present in both years, it is down 18.0% on 2019, before the pandemic, and down 16.2% on 2015.
Vehicle miles a year
Like for like, traffic is down 38.6% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 99m |
| 2001 | 97m |
| 2002 | 92m |
| 2003 | 92m |
| 2004 | 89m |
| 2005 | 88m |
| 2006 | 91m |
| 2007 | 88m |
| 2008 | 85m |
| 2009 | 83m |
| 2010 | 81m |
| 2011 | 78m |
| 2012 | 76m |
| 2013 | 73m |
| 2014 | 73m |
| 2015 | 73m |
| 2016 | 74m |
| 2017 | 72m |
| 2018 | 71m |
| 2019 | 78m |
| 2020 | 62m |
| 2021 | 68m |
| 2022 | 69m |
| 2023 | 67m |
| 2024 | 65m |
| 2025 | 59m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 27,544 |
| 2001 | 27,009 |
| 2002 | 25,708 |
| 2003 | 25,666 |
| 2004 | 24,735 |
| 2005 | 24,592 |
| 2006 | 25,316 |
| 2007 | 24,519 |
| 2008 | 23,830 |
| 2009 | 23,284 |
| 2010 | 22,728 |
| 2011 | 21,826 |
| 2012 | 21,239 |
| 2013 | 20,464 |
| 2014 | 20,366 |
| 2015 | 20,483 |
| 2016 | 20,553 |
| 2017 | 20,198 |
| 2018 | 19,475 |
| 2019 | 20,610 |
| 2020 | 16,251 |
| 2021 | 17,795 |
| 2022 | 18,187 |
| 2023 | 17,705 |
| 2024 | 17,060 |
| 2025 | 16,233 |
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, 8 of the 25 count points were counted; DfT estimated the rest from earlier counts and local trends.
A503 collisions
Police recorded 989 collisions with the A503 as the first road from 2021 to 2025, 175 of them fatal or serious, including 4 fatal. That is 301.7 per 100 million vehicle miles, higher than the 31.5 for all A-roads in Great Britain. On average there were 19.8 a year for each mile of road.
Reported collisions by year
Down 34.7% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 203 | 39 |
| 2022 | 185 | 44 |
| 2023 | 148 | 26 |
| 2024 | 153 | 33 |
| 2025 | 125 | 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 |
|---|---|
| A10 to A1055 Haringey · 98 collisions | 582.2 |
| A1006 to A112 Waltham Forest · 71 collisions | 451.3 |
| A107 to A10 Hackney, Haringey · 141 collisions | 400.5 |
| A1201 to A105 Hackney · 99 collisions | 394.5 |
| A1055 to A1006 Haringey, Waltham Forest · 61 collisions | 264.2 |
| A112 Chingford Road to A104 Woodford New Road Waltham Forest · 68 collisions | 203.2 |
| A105 to A107 Hackney · 50 collisions | 179.4 |
| St Pancras Way to Camden Park Rd Camden · 36 collisions | 178.2 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 250 collisions were recorded at junctions where the A503 was the second road; they are not in the figures above. Fatal or serious uses DfT’s adjusted serious figures. 93.3% of the collisions could be placed on a section. How we count collisions
Council areas on the A503
In route order. Each is the highway authority DfT files the count points under.
- Camden
- Islington
- Hackney
- Haringey
- Waltham Forest
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 | 25 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 989 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.