A-road
A1303 traffic and collisions
The A1303 is an A-road of 13.5 miles, in Cambridgeshire. This page covers its traffic at 11 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 53m vehicle miles
- Average daily traffic 10,650 vehicles a day, both directions
- Busiest section 25,781 Airport Way to A14
- HGV share 2.1% of vehicle miles
- Traffic since 2019 −5.7% same count points
- Collisions, 2021 to 2025 131 52.1 per 100m vehicle miles
How busy is the A1303?
On an average day in 2025, 10,650 vehicles passed each point on the A1303, counting both directions. The busiest section is Airport Way to A14 (Cambridgeshire), with 25,781 a day; the quietest listed is A14(T) to A1303 spur, with 5,407.
Busiest sections, 2025
Airport Way to A14 carries 2.4 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| Airport Way to A14 Cambridgeshire · 1.2 mi · HGVs 2.3% | 25,781 |
| A428 spur to M11 mid-junction Cambridgeshire · 1.8 mi · HGVs 3.4% | 15,293 |
| A1134 to Airport Way Cambridgeshire · 1.2 mi · HGVs 1.9% | 15,254 |
| Trinity Conduit Head to A1134 Cambridgeshire · 1.2 mi · HGVs 1.1% | 11,615 |
| At A1134 Cambridgeshire · 0.5 mi · HGVs 2.2% | 9,745 |
| Magdalene St/Castle St to A1134 Milton Rd Cambridgeshire · 0.5 mi · HGVs 1.3% | 8,617 |
| A1303 spur to A1304 Cambridgeshire · 2.5 mi · HGVs 1.8% | 6,468 |
| A14(T) to A1303 spur Cambridgeshire · 4.2 mi · HGVs 1.8% | 5,407 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
In Cambridgeshire · 13.5 miles
A1303 traffic and collisions by section
11 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 | A428 spur to M11 mid-junctionCambridgeshire | 15,293 | 11 |
| 2 | M11 to Trinity Conduit HeadCambridgeshire | 11,731 | fewer than 3 |
| 3 | Trinity Conduit Head to A1134Cambridgeshire | 11,615 | 17 |
| 4 | At A1134Cambridgeshire | 15,357 | 5 |
| 5 | A1134 to Magdalene St/Castle StCambridgeshire | 11,242 | 7 |
| 6 | Magdalene St/Castle St to A1134 Milton RdCambridgeshire | 8,617 | 12 |
| 7 | At A1134Cambridgeshire | 9,745 | 11 |
| 8 | A1134 to Airport WayCambridgeshire | 15,254 | 20 |
| 9 | Airport Way to A14Cambridgeshire | 25,781 | 8 |
| 10 | A14(T) to A1303 spurCambridgeshire | 5,407 | 24 |
| 11 | A1303 spur to A1304Cambridgeshire | 6,468 | 15 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A1303 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.
A1303 traffic by vehicle type
Cars and taxis make up 82.2% of the vehicle miles on the A1303. HGVs account for 2.1%, rising to 3.4% on A428 spur to M11 mid-junction.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 3.0% |
| 2001 | 3.2% |
| 2002 | 3.2% |
| 2003 | 3.1% |
| 2004 | 3.4% |
| 2005 | 3.5% |
| 2006 | 3.5% |
| 2007 | 3.4% |
| 2008 | 2.9% |
| 2009 | 2.5% |
| 2010 | 2.3% |
| 2011 | 2.3% |
| 2012 | 2.4% |
| 2013 | 2.2% |
| 2014 | 2.4% |
| 2015 | 2.3% |
| 2016 | 2.3% |
| 2017 | 2.4% |
| 2018 | 2.5% |
| 2019 | 2.4% |
| 2020 | 2.8% |
| 2021 | 2.7% |
| 2022 | 2.3% |
| 2023 | 2.3% |
| 2024 | 2.2% |
| 2025 | 2.1% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A1303 traffic trend
Traffic on the A1303 came to 52.5 million vehicle miles in 2025. At the count points present in both years, it is down 5.7% on 2019, before the pandemic, and down 5.7% on 2015.
Vehicle miles a year
Like for like, traffic is up 0.5% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 52m |
| 2001 | 52m |
| 2002 | 52m |
| 2003 | 51m |
| 2004 | 53m |
| 2005 | 52m |
| 2006 | 51m |
| 2007 | 53m |
| 2008 | 51m |
| 2009 | 52m |
| 2010 | 53m |
| 2011 | 54m |
| 2012 | 53m |
| 2013 | 53m |
| 2014 | 55m |
| 2015 | 55m |
| 2016 | 55m |
| 2017 | 53m |
| 2018 | 55m |
| 2019 | 56m |
| 2020 | 42m |
| 2021 | 47m |
| 2022 | 49m |
| 2023 | 51m |
| 2024 | 51m |
| 2025 | 53m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 10,471 |
| 2001 | 10,389 |
| 2002 | 10,444 |
| 2003 | 10,328 |
| 2004 | 10,570 |
| 2005 | 10,374 |
| 2006 | 10,364 |
| 2007 | 10,637 |
| 2008 | 10,351 |
| 2009 | 10,383 |
| 2010 | 10,749 |
| 2011 | 10,818 |
| 2012 | 10,724 |
| 2013 | 10,666 |
| 2014 | 11,081 |
| 2015 | 11,128 |
| 2016 | 11,057 |
| 2017 | 10,719 |
| 2018 | 11,076 |
| 2019 | 11,292 |
| 2020 | 8,561 |
| 2021 | 9,614 |
| 2022 | 9,979 |
| 2023 | 10,415 |
| 2024 | 10,423 |
| 2025 | 10,650 |
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, 2 of the 11 count points were counted; DfT estimated the rest from earlier counts and local trends.
A1303 collisions
Police recorded 131 collisions with the A1303 as the first road from 2021 to 2025, fewer than 3 of them fatal or serious. That is 52.1 per 100 million vehicle miles, higher than the 31.5 for all A-roads in Great Britain. On average there were 1.9 a year for each mile of road.
Reported collisions by year
Up 83.3% from 2021 to 2025.
| Year | Collisions |
|---|---|
| 2021 | 18 |
| 2022 | 27 |
| 2023 | 23 |
| 2024 | 30 |
| 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 |
|---|---|
| Magdalene St/Castle St to A1134 Milton Rd Cambridgeshire · 12 collisions | 141.7 |
| At A1134 Cambridgeshire · 11 collisions | 127.8 |
| A1134 to Airport Way Cambridgeshire · 20 collisions | 68.9 |
| Trinity Conduit Head to A1134 Cambridgeshire · 17 collisions | 65.0 |
| A14(T) to A1303 spur Cambridgeshire · 24 collisions | 60.3 |
| A1303 spur to A1304 Cambridgeshire · 15 collisions | 52.9 |
| A428 spur to M11 mid-junction Cambridgeshire · 11 collisions | 22.0 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 30 collisions were recorded at junctions where the A1303 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 A1303
In route order. Each is the highway authority DfT files the count points under.
- Cambridgeshire
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 | 131 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.