A-road
A1101 traffic and collisions
The A1101 is an A-road of 51.1 miles, from Suffolk to Lincolnshire. This page covers its traffic at 18 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 117m vehicle miles
- Average daily traffic 6,286 vehicles a day, both directions
- Busiest section 15,677 Elm High Road to B198
- HGV share 5.5% of vehicle miles
- Traffic since 2019 +1.0% same count points
- Collisions, 2021 to 2025 183 33.4 per 100m vehicle miles
How busy is the A1101?
On an average day in 2025, 6,286 vehicles passed each point on the A1101, counting both directions. The busiest section is Elm High Road to B198 (Norfolk, Cambridgeshire), with 15,677 a day; the quietest listed is B1100 to B1098, with 2,138.
Busiest sections, 2025
Elm High Road to B198 carries 2.5 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| Elm High Road to B198 Norfolk, Cambridgeshire · 1.5 mi · HGVs 4.7% | 15,677 |
| B198 to B1169 Cambridgeshire · 0.9 mi · HGVs 5.2% | 14,232 |
| A1302/A143 Rndbt to B1106 roundabout Suffolk · 0.6 mi · HGVs 2.0% | 13,085 |
| Lark Road to Rookery Grove Suffolk · 3.7 mi · HGVs 3.7% | 11,730 |
| A1122 to A47 Norfolk · 3.5 mi · HGVs 9.8% | 10,856 |
| A11 to Lark Road Suffolk · 0.7 mi · HGVs 4.9% | 9,952 |
| Peatling's Lane, Wisbech to A17(T) Cambridgeshire, Lincolnshire · 7.0 mi · HGVs 7.8% | 8,446 |
| B1098 to A1122 Norfolk · 3.0 mi · HGVs 2.9% | 7,778 |
| B1106 roundabout to Northern Way Suffolk · 0.7 mi · HGVs 2.6% | 7,384 |
| Northern Way to A11/A1065 Suffolk · 9.3 mi · HGVs 4.4% | 4,137 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Suffolk to Lincolnshire · 51.1 miles
A1101 traffic and collisions by section
14 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 | A1302/A143 Rndbt to B1106 roundaboutSuffolk | 13,085 | 8 |
| 2 | B1106 roundabout to Northern WaySuffolk | 7,384 | 5 |
| 3 | Northern Way to A11/A1065Suffolk | 4,137 | 11 |
| 4 | A11 to Lark RoadSuffolk | 9,952 | 4 |
| 5 | Lark Road to Rookery GroveSuffolk | 11,730 | 24 |
| 6 | Rookery Grove to A10Suffolk, Cambridgeshire | 3,219 | 11 |
| 7 | A10 to B1100Cambridgeshire, Norfolk | 3,602 | 7 |
| 8 | B1100 to B1098Norfolk | 2,138 | 7 |
| 9 | B1098 to A1122Norfolk | 7,778 | 10 |
| 10 | A1122 to A47Norfolk | 10,856 | 24 |
| 11 | Elm High Road to B198Norfolk, Cambridgeshire | 15,677 | 30 |
| 12 | B198 to B1169Cambridgeshire | 14,232 | 15 |
| 13 | B1169 to Peatling's LaneCambridgeshire | 10,695 | 4 |
| 14 | Peatling's Lane, Wisbech to A17(T)Cambridgeshire, Lincolnshire | 8,446 | 23 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A1101 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.
A1101 traffic by vehicle type
Cars and taxis make up 76.3% of the vehicle miles on the A1101. HGVs account for 5.5%, rising to 9.8% on A1122 to A47.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 8.9% |
| 2001 | 9.3% |
| 2002 | 8.7% |
| 2003 | 7.9% |
| 2004 | 8.2% |
| 2005 | 8.0% |
| 2006 | 7.9% |
| 2007 | 8.6% |
| 2008 | 8.4% |
| 2009 | 7.8% |
| 2010 | 7.9% |
| 2011 | 7.8% |
| 2012 | 7.8% |
| 2013 | 7.5% |
| 2014 | 7.4% |
| 2015 | 7.3% |
| 2016 | 6.8% |
| 2017 | 6.9% |
| 2018 | 6.1% |
| 2019 | 6.1% |
| 2020 | 7.0% |
| 2021 | 6.7% |
| 2022 | 6.4% |
| 2023 | 5.8% |
| 2024 | 5.2% |
| 2025 | 5.5% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A1101 traffic trend
Traffic on the A1101 came to 117 million vehicle miles in 2025. At the count points present in both years, it is up 1.0% on 2019, before the pandemic, and up 5.6% on 2015.
Vehicle miles a year
Like for like, traffic is up 9.4% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 107m |
| 2001 | 109m |
| 2002 | 109m |
| 2003 | 114m |
| 2004 | 115m |
| 2005 | 116m |
| 2006 | 115m |
| 2007 | 114m |
| 2008 | 111m |
| 2009 | 111m |
| 2010 | 110m |
| 2011 | 111m |
| 2012 | 110m |
| 2013 | 110m |
| 2014 | 113m |
| 2015 | 111m |
| 2016 | 112m |
| 2017 | 113m |
| 2018 | 116m |
| 2019 | 116m |
| 2020 | 90m |
| 2021 | 100m |
| 2022 | 108m |
| 2023 | 110m |
| 2024 | 113m |
| 2025 | 117m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 5,746 |
| 2001 | 5,822 |
| 2002 | 5,866 |
| 2003 | 6,126 |
| 2004 | 6,168 |
| 2005 | 6,194 |
| 2006 | 6,175 |
| 2007 | 6,117 |
| 2008 | 5,923 |
| 2009 | 5,945 |
| 2010 | 5,895 |
| 2011 | 5,936 |
| 2012 | 5,884 |
| 2013 | 5,904 |
| 2014 | 6,039 |
| 2015 | 5,951 |
| 2016 | 6,004 |
| 2017 | 6,059 |
| 2018 | 6,215 |
| 2019 | 6,225 |
| 2020 | 4,815 |
| 2021 | 5,333 |
| 2022 | 5,785 |
| 2023 | 5,910 |
| 2024 | 6,080 |
| 2025 | 6,286 |
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 18 count points were counted; DfT estimated the rest from earlier counts and local trends.
A1101 collisions
Police recorded 183 collisions with the A1101 as the first road from 2021 to 2025, 62 of them fatal or serious, including 7 fatal. That is 33.4 per 100 million vehicle miles, close to the 31.5 for all A-roads in Great Britain. On average there were 0.7 a year for each mile of road.
Reported collisions by year
Up 2.8% from 2021 to 2025.
| Year | Slight | Fatal or serious |
|---|---|---|
| 2021 | 21 | 15 |
| 2022 | 21 | 12 |
| 2023 | 22 | 5 |
| 2024 | 33 | 17 |
| 2025 | 25 | 12 |
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 |
|---|---|
| Elm High Road to B198 Norfolk, Cambridgeshire · 30 collisions | 69.7 |
| B198 to B1169 Cambridgeshire · 15 collisions | 66.1 |
| A1122 to A47 Norfolk · 24 collisions | 42.8 |
| Lark Road to Rookery Grove Suffolk · 24 collisions | 31.3 |
| B1098 to A1122 Norfolk · 10 collisions | 26.7 |
| Peatling's Lane, Wisbech to A17(T) Cambridgeshire, Lincolnshire · 23 collisions | 23.3 |
| Rookery Grove to A10 Suffolk, Cambridgeshire · 11 collisions | 20.1 |
| Northern Way to A11/A1065 Suffolk · 11 collisions | 16.3 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 13 collisions were recorded at junctions where the A1101 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 A1101
In route order. Each is the highway authority DfT files the count points under.
- Suffolk
- Cambridgeshire
- Norfolk
- 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 | 18 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 183 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.