A-road
A171 traffic and collisions
The A171 is an A-road of 48.8 miles, from North Yorkshire to Middlesbrough. This page covers its traffic at 15 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 183m vehicle miles
- Average daily traffic 10,292 vehicles a day, both directions
- Busiest section 22,155 A173 to A1043
- HGV share 3.4% of vehicle miles
- Traffic since 2019 −1.7% same count points
- Collisions, 2021 to 2025 209 24.2 per 100m vehicle miles
How busy is the A171?
On an average day in 2025, 10,292 vehicles passed each point on the A171, counting both directions. The busiest section is A173 to A1043 (Redcar and Cleveland), with 22,155 a day; the quietest listed is Barmoor Lane to A165, with 6,740.
Busiest sections, 2025
A173 to A1043 carries 2.2 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A173 to A1043 Redcar and Cleveland · 2.6 mi · HGVs 1.9% | 22,155 |
| A174 to B1416 Stakesby Rd North Yorkshire · 0.6 mi · HGVs 2.9% | 18,749 |
| A174(T) to A1085 Redcar and Cleveland, Middlesbrough · 2.2 mi · HGVs 0.9% | 18,483 |
| B1416 Staksby Rd, Whitby to A169 North Yorkshire · 1.0 mi · HGVs 2.9% | 16,891 |
| Eskdale Rd to A174 North Yorkshire · 1.0 mi · HGVs 2.5% | 15,382 |
| A1043 to A174(T) Redcar and Cleveland · 1.0 mi · HGVs 1.4% | 15,007 |
| A170 to Barmoor Lane North Yorkshire · 2.7 mi · HGVs 1.7% | 14,620 |
| A173S to A173N Redcar and Cleveland · 2.4 mi · HGVs 2.8% | 13,703 |
| A1085 to A66 Middlesbrough · 0.5 mi · HGVs 4.5% | 12,587 |
| A165 to Eskdale Rd, Whitby North Yorkshire · 14.6 mi · HGVs 3.4% | 7,794 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
North Yorkshire to Middlesbrough · 48.8 miles
A171 traffic and collisions by section
13 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 | A64 to A170North Yorkshire | 19,671 | 3 |
| 2 | A170 to Barmoor LaneNorth Yorkshire | 14,620 | 23 |
| 3 | Barmoor Lane to A165North Yorkshire | 6,740 | fewer than 3 |
| 4 | A165 to Eskdale Rd, WhitbyNorth Yorkshire | 7,794 | 27 |
| 5 | Eskdale Rd to A174North Yorkshire | 15,382 | 12 |
| 6 | A174 to B1416 Stakesby RdNorth Yorkshire | 18,749 | fewer than 3 |
| 7 | B1416 Staksby Rd, Whitby to A169North Yorkshire | 16,891 | 6 |
| 8 | A169 to A173North Yorkshire, Redcar and Cleveland | 7,560 | 52 |
| 9 | A173S to A173NRedcar and Cleveland | 13,703 | 8 |
| 10 | A173 to A1043Redcar and Cleveland | 22,155 | 13 |
| 11 | A1043 to A174(T)Redcar and Cleveland | 15,007 | 5 |
| 12 | A174(T) to A1085Redcar and Cleveland, Middlesbrough | 18,483 | 22 |
| 13 | A1085 to A66Middlesbrough | 12,587 | 6 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A171 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.
A171 traffic by vehicle type
Cars and taxis make up 78.2% of the vehicle miles on the A171. HGVs account for 3.4%, rising to 5.8% on A169 to A173.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 5.8% |
| 2001 | 5.1% |
| 2002 | 4.6% |
| 2003 | 4.9% |
| 2004 | 4.7% |
| 2005 | 4.7% |
| 2006 | 4.2% |
| 2007 | 4.1% |
| 2008 | 3.8% |
| 2009 | 3.6% |
| 2010 | 3.6% |
| 2011 | 3.5% |
| 2012 | 3.5% |
| 2013 | 3.5% |
| 2014 | 3.5% |
| 2015 | 3.5% |
| 2016 | 3.5% |
| 2017 | 3.6% |
| 2018 | 3.6% |
| 2019 | 3.6% |
| 2020 | 4.2% |
| 2021 | 4.1% |
| 2022 | 3.9% |
| 2023 | 3.6% |
| 2024 | 3.5% |
| 2025 | 3.4% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A171 traffic trend
Traffic on the A171 came to 183 million vehicle miles in 2025. At the count points present in both years, it is down 1.7% on 2019, before the pandemic, and down 1.8% on 2015.
Vehicle miles a year
Like for like, traffic is up 24.2% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 147m |
| 2001 | 148m |
| 2002 | 155m |
| 2003 | 161m |
| 2004 | 163m |
| 2005 | 156m |
| 2006 | 166m |
| 2007 | 171m |
| 2008 | 181m |
| 2009 | 179m |
| 2010 | 181m |
| 2011 | 182m |
| 2012 | 181m |
| 2013 | 181m |
| 2014 | 183m |
| 2015 | 185m |
| 2016 | 188m |
| 2017 | 189m |
| 2018 | 185m |
| 2019 | 185m |
| 2020 | 140m |
| 2021 | 157m |
| 2022 | 169m |
| 2023 | 177m |
| 2024 | 179m |
| 2025 | 183m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 8,298 |
| 2001 | 8,350 |
| 2002 | 8,774 |
| 2003 | 9,088 |
| 2004 | 9,218 |
| 2005 | 8,838 |
| 2006 | 9,393 |
| 2007 | 9,669 |
| 2008 | 10,247 |
| 2009 | 10,087 |
| 2010 | 10,210 |
| 2011 | 10,284 |
| 2012 | 10,231 |
| 2013 | 10,227 |
| 2014 | 10,332 |
| 2015 | 10,435 |
| 2016 | 10,626 |
| 2017 | 10,683 |
| 2018 | 10,441 |
| 2019 | 10,432 |
| 2020 | 7,903 |
| 2021 | 8,824 |
| 2022 | 9,500 |
| 2023 | 9,952 |
| 2024 | 10,096 |
| 2025 | 10,292 |
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 15 count points were counted; DfT estimated the rest from earlier counts and local trends.
A171 collisions
Police recorded 209 collisions with the A171 as the first road from 2021 to 2025, 79 of them fatal or serious, including 8 fatal. That is 24.2 per 100 million vehicle miles, lower than 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
Down 28.8% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 35 | 17 |
| 2022 | 22 | 19 |
| 2023 | 27 | 16 |
| 2024 | 24 | 12 |
| 2025 | 21 | 16 |
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 |
|---|---|
| Eskdale Rd to A174 North Yorkshire · 12 collisions | 44.1 |
| A174(T) to A1085 Redcar and Cleveland, Middlesbrough · 22 collisions | 39.1 |
| A170 to Barmoor Lane North Yorkshire · 23 collisions | 35.3 |
| A169 to A173 North Yorkshire, Redcar and Cleveland · 52 collisions | 20.6 |
| A173 to A1043 Redcar and Cleveland · 13 collisions | 13.8 |
| A165 to Eskdale Rd, Whitby North Yorkshire · 27 collisions | 13.5 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 36 collisions were recorded at junctions where the A171 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 A171
In route order. Each is the highway authority DfT files the count points under.
- North Yorkshire
- Redcar and Cleveland
- Middlesbrough
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 | 15 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 209 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.