A-road
A156 traffic and collisions
The A156 is an A-road of 11.3 miles, in Lincolnshire. This page covers its traffic at 5 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 26m vehicle miles
- Average daily traffic 6,389 vehicles a day, both directions
- Busiest section 7,402 A1500 to B1241
- HGV share 3.7% of vehicle miles
- Traffic since 2019 +3.1% same count points
How busy is the A156?
On an average day in 2025, 6,389 vehicles passed each point on the A156, counting both directions. The busiest section is A1500 to B1241 (Lincolnshire), with 7,402 a day; the quietest listed is A57(T) to A1133, with 4,762.
Busiest sections, 2025
A1500 to B1241 carries 1.2 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A1500 to B1241 Lincolnshire · 4.8 mi · HGVs 3.7% | 7,402 |
| A1133 to A1500 Lincolnshire · 2.7 mi · HGVs 4.8% | 6,359 |
| A57(T) to A1133 Lincolnshire · 3.4 mi · HGVs 3.0% | 4,762 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
In Lincolnshire · 11.3 miles
A156 traffic and collisions by section
4 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 1 short link roads and spurs (0.2 miles) count in the road’s totals but are not listed.
Sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | A57(T) to A1133Lincolnshire | 4,762 | – |
| 2 | A1133 to A1500Lincolnshire | 6,359 | – |
| 3 | A1500 to B1241Lincolnshire | 7,402 | – |
| 4 | A156 Lea Rd to A159/A631Lincolnshire | 9,982 | – |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A156 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.
A156 traffic by vehicle type
Cars and taxis make up 77.4% of the vehicle miles on the A156. HGVs account for 3.7%, rising to 4.8% on A1133 to A1500.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 7.3% |
| 2001 | 6.7% |
| 2002 | 6.8% |
| 2003 | 6.6% |
| 2004 | 6.2% |
| 2005 | 6.6% |
| 2006 | 6.6% |
| 2007 | 7.0% |
| 2008 | 7.5% |
| 2009 | 7.1% |
| 2010 | 7.2% |
| 2011 | 7.0% |
| 2012 | 7.0% |
| 2013 | 6.4% |
| 2014 | 6.3% |
| 2015 | 6.5% |
| 2016 | 4.8% |
| 2017 | 4.9% |
| 2018 | 4.2% |
| 2019 | 4.2% |
| 2020 | 5.0% |
| 2021 | 4.5% |
| 2022 | 4.3% |
| 2023 | 4.1% |
| 2024 | 3.8% |
| 2025 | 3.7% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A156 traffic trend
Traffic on the A156 came to 26.4 million vehicle miles in 2025. At the count points present in both years, it is up 3.1% on 2019, before the pandemic, and up 6.8% on 2015.
Vehicle miles a year
Like for like, traffic is up 15.4% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 25m |
| 2001 | 27m |
| 2002 | 29m |
| 2003 | 27m |
| 2004 | 27m |
| 2005 | 27m |
| 2006 | 28m |
| 2007 | 26m |
| 2008 | 26m |
| 2009 | 26m |
| 2010 | 26m |
| 2011 | 26m |
| 2012 | 26m |
| 2013 | 27m |
| 2014 | 27m |
| 2015 | 27m |
| 2016 | 30m |
| 2017 | 30m |
| 2018 | 30m |
| 2019 | 30m |
| 2020 | 23m |
| 2021 | 26m |
| 2022 | 28m |
| 2023 | 29m |
| 2024 | 26m |
| 2025 | 26m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 6,099 |
| 2001 | 6,655 |
| 2002 | 7,006 |
| 2003 | 6,542 |
| 2004 | 6,576 |
| 2005 | 6,707 |
| 2006 | 6,818 |
| 2007 | 6,466 |
| 2008 | 6,324 |
| 2009 | 6,343 |
| 2010 | 6,268 |
| 2011 | 6,303 |
| 2012 | 6,316 |
| 2013 | 6,489 |
| 2014 | 6,576 |
| 2015 | 6,674 |
| 2016 | 7,270 |
| 2017 | 7,332 |
| 2018 | 7,344 |
| 2019 | 7,360 |
| 2020 | 5,603 |
| 2021 | 6,391 |
| 2022 | 6,892 |
| 2023 | 7,032 |
| 2024 | 6,420 |
| 2025 | 6,389 |
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 (57.5% of today’s road for 2019). In 2025, 0 of the 5 count points were counted; DfT estimated the rest from earlier counts and local trends.
A156 collisions
Police recorded fewer than 3 collisions with the A156 as the first road from 2021 to 2025, 7 of them fatal or serious.
Reported collisions by year
| Year | Collisions | Fatal or serious |
|---|---|---|
| 2021 | fewer than 3 | 0 |
| 2022 | 5 | 0 |
| 2023 | 9 | 4 |
| 2024 | 10 | fewer than 3 |
| 2025 | 5 | fewer than 3 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 3 collisions were recorded at junctions where the A156 was the second road; they are not in the figures above. Fatal or serious uses DfT’s adjusted serious figures. 90.3% of the collisions could be placed on a section. How we count collisions
Council areas on the A156
In route order. Each is the highway authority DfT files the count points under.
- Lincolnshire
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 | 31 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.