Trunk A-road

A428 traffic and collisions

The A428 is a trunk A-road of 69.1 miles, from Cambridgeshire to Coventry. This page covers its traffic at 36 DfT count points since 2000 and the collisions police recorded on it.

Last updated: 15 September 2026
Data source: Department for Transport
Records analysed: 36 count points in 2025
Methodology: View methodology

Traffic in 2025 314m vehicle miles
Average daily traffic 12,431 vehicles a day, both directions
Busiest section 40,644 A45 to A4501
HGV share 4.9% of vehicle miles
Traffic since 2019 −14.9% same count points
Collisions, 2021 to 2025 449 28.2 per 100m vehicle miles

How busy is the A428?

On an average day in 2025, 12,431 vehicles passed each point on the A428, counting both directions. The busiest section is A45 to A4501 (West Northamptonshire), with 40,644 a day; the quietest listed is M1 to Quarry Rd, New Duston, with 5,192.

Busiest sections, 2025

A45 to A4501 carries 3.3 times the road’s average flow.

Sections of the A428 with the highest average daily flow, 2025
Section	Vehicles a day
A45 to A4501 West Northamptonshire · 0.5 mi · HGVs 1.6%	40,644
A1198 to A428 spur Cambridgeshire · 5.8 mi · HGVs 6.6%	24,633
B4082 to A4082 Coventry · 0.6 mi · HGVs 1.5%	22,624
A4501 to A5123 West Northamptonshire · 0.6 mi · HGVs 2.3%	21,664
A46 to B4082 Coventry · 0.8 mi · HGVs 0.9%	19,899
A428 spur to A14 / M11 Cambridgeshire · 2.4 mi · HGVs 6.9%	19,312
A4082 to A444 Coventry · 1.5 mi · HGVs 0.9%	19,197
A5095 to A4500 West Northamptonshire · 0.6 mi · HGVs 2.4%	18,645
A5095 to A428(T) West Northamptonshire · 0.8 mi · HGVs 4.1%	18,264
A5134 to A422 Bedford · 0.7 mi · HGVs 3.3%	16,469

Source:DfT,UK Motoring analysis 2000 to 2025 Updated 15 Sept 2026

Route

Cambridgeshire to Coventry · 69.1 miles

Schematic route: each line joins the junctions at the ends of a DfT count point link.

A428 traffic and collisions by section

31 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.

Show all 31 sections Tap a column heading to sort

Sections of the A428 in route order, 2025 traffic
#
1	Scotland Road to A428Cambridgeshire	0.2	2,762	4.5%	+11.2%	0	–
2	A428 to Scotland RoadCambridgeshire	0.2	2,563	5.0%	+8.6%	fewer than 3	–
3	A428 spur to A14 / M11Cambridgeshire	2.4	19,312	6.9%	–	fewer than 3	–
4	A428 main route to A1303Cambridgeshire	0.4	14,912	3.5%	−29.7%	3	–
5	A1198 to A428 spurCambridgeshire	5.8	24,633	6.6%	−31.3%	19	6.5
6	B1040 to A1 spurCambridgeshire, Bedford	8.8	16,020	10.4%	–	72	83.5
7	A428 to A5134Bedford	0.3	16,469	3.3%	−5.5%	3	–
8	A5134 to A422Bedford	0.7	16,469	3.3%	−5.5%	3	–
9	A422 to A509Bedford, Milton Keynes	7.8	8,091	4.4%	−11.2%	15	13.6
10	A509 to A428 principalMilton Keynes, West Northamptonshire	8.0	8,750	4.1%	−6.1%	15	12.2
11	A5095 to A428(T)West Northamptonshire	0.8	18,264	4.1%	+8.3%	9	–
12	A45 to A4501West Northamptonshire	0.5	40,644	1.6%	−8.2%	7	–
13	A4501 to A5123West Northamptonshire	0.6	21,664	2.3%	−7.2%	14	60.7
14	A508 to A428West Northamptonshire	0.3	26,675	1.8%	–	17	–
15	A508 Bridge Street to A508 Cattle Market RoadWest Northamptonshire	0.1	13,243	2.4%	–	fewer than 3	–
16	A508/A5123 to A508West Northamptonshire	0.2	29,680	2.0%	–	43	–
17	A5123/A508 to A5095West Northamptonshire	0.3	18,374	1.4%	−24.7%	4	–
18	A5095 to A4500West Northamptonshire	0.6	18,645	2.4%	−9.7%	24	121.4
19	Quarry Road, New Duston to A45West Northamptonshire	2.1	13,683	3.9%	−17.8%	37	72.9
20	M1 to Quarry Rd, New DustonWest Northamptonshire	12.7	5,192	2.0%	–	27	112.2
21	At A5(T)West Northamptonshire	0.4	13,918	15.6%	+14.8%	3	–
22	A5 to B4038 Kilsby LaneWest Northamptonshire, Warwickshire	1.6	9,316	5.0%	+21.8%	8	–
23	B4038 Kilsby Lane to A426Warwickshire	2.9	13,640	0.5%	+0.7%	30	44.7
24	Parkfield Rd to A426/A4071Warwickshire	0.9	11,554	1.2%	−5.4%	17	92.5
25	Parkfield Rd, Rugby to B4455Warwickshire	3.8	6,737	2.1%	−6.9%	12	26.7
26	B4455 to Avondale RoadWarwickshire	1.7	9,908	2.6%	−7.2%	4	–
27	Avondale Road to A46(T)Warwickshire	1.7	9,603	1.0%	−5.9%	7	–
28	A46 to B4082Coventry	0.8	19,899	0.9%	−7.4%	6	–
29	B4082 to A4082Coventry	0.6	22,624	1.5%	−5.9%	6	–
30	A4082 to A444Coventry	1.5	19,197	0.9%	−22.0%	16	28.1
31	A444 to A4600Coventry	0.2	33,835	2.1%	−6.0%	17	–

Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A428 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.

A428 traffic by vehicle type

Cars and taxis make up 78.8% of the vehicle miles on the A428. HGVs account for 4.9%, rising to 10.4% on B1040 to A1 spur.

Vehicle mix, 2025

Share of vehicle miles on the A428 by vehicle type
Category	Share
Cars and taxis	78.8%
Vans (LGVs)	15.4%
HGVs	4.9%
Motorcycles	0.6%
Buses and coaches	0.4%

Source:DfT,UK Motoring analysis 2000 to 2025 Updated 15 Sept 2026

HGV share of traffic

HGVs as a share of vehicle miles on the A428, by year
Year	HGV share
2000	6.1%
2001	5.9%
2002	5.8%
2003	5.7%
2004	6.0%
2005	5.8%
2006	6.1%
2007	6.1%
2008	5.7%
2009	5.2%
2010	5.3%
2011	5.1%
2012	4.7%
2013	4.7%
2014	4.6%
2015	4.7%
2016	5.0%
2017	5.2%
2018	5.2%
2019	5.4%
2020	6.6%
2021	6.2%
2022	5.6%
2023	5.3%
2024	5.2%
2025	4.9%

Source:DfT,UK Motoring analysis 2000 to 2025 Updated 15 Sept 2026

A428 traffic trend

Traffic on the A428 came to 314 million vehicle miles in 2025. At the count points present in both years, it is down 14.9% on 2019, before the pandemic, and down 7.1% on 2015.

Vehicle miles a year

Like for like, traffic is down 3.5% on 2000.

Vehicle miles on the A428 each year, the whole road as it was that year
Year	Vehicle miles
2000	342m
2001	348m
2002	348m
2003	338m
2004	350m
2005	347m
2006	355m
2007	345m
2008	346m
2009	342m
2010	341m
2011	339m
2012	352m
2013	356m
2014	366m
2015	376m
2016	355m
2017	366m
2018	376m
2019	361m
2020	270m
2021	299m
2022	318m
2023	327m
2024	336m
2025	314m

Source:DfT,UK Motoring analysis 2000 to 2025 Updated 15 Sept 2026

Average daily flow

Average daily flow along the A428, weighted by link length, by year
Year	Vehicles a day
2000	12,850
2001	13,077
2002	13,189
2003	12,819
2004	13,272
2005	13,145
2006	13,413
2007	13,002
2008	13,090
2009	12,916
2010	12,869
2011	12,792
2012	12,672
2013	12,827
2014	13,187
2015	13,544
2016	13,773
2017	14,270
2018	14,495
2019	14,604
2020	10,913
2021	12,097
2022	12,859
2023	13,238
2024	13,423
2025	12,431

Source:DfT,UK Motoring analysis 2000 to 2025 Updated 15 Sept 2026

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 (66.0% of today’s road for 2019). In 2025, 11 of the 36 count points were counted; DfT estimated the rest from earlier counts and local trends.

A428 collisions

Police recorded 449 collisions with the A428 as the first road from 2021 to 2025, 91 of them fatal or serious, including 9 fatal. That is 28.2 per 100 million vehicle miles, lower than the 31.5 for all A-roads in Great Britain. On average there were 1.3 a year for each mile of road.

Reported collisions by year

Up 13.8% from 2021 to 2025.

Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated 15 Sept 2026

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.

Collisions per 100 million vehicle miles by section of the A428, 2021 to 2025
Section	Per 100m vehicle miles
A5095 to A4500 West Northamptonshire · 24 collisions	121.4
M1 to Quarry Rd, New Duston West Northamptonshire · 27 collisions	112.2
Parkfield Rd to A426/A4071 Warwickshire · 17 collisions	92.5
B1040 to A1 spur Cambridgeshire, Bedford · 72 collisions	83.5
Quarry Road, New Duston to A45 West Northamptonshire · 37 collisions	72.9
A4501 to A5123 West Northamptonshire · 14 collisions	60.7
B4038 Kilsby Lane to A426 Warwickshire · 30 collisions	44.7
A4082 to A444 Coventry · 16 collisions	28.1

Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated 15 Sept 2026

A further 110 collisions were recorded at junctions where the A428 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 A428

In route order. Each is the highway authority DfT files the count points under.

Cambridgeshire
Bedford
Milton Keynes
West Northamptonshire
Warwickshire
Coventry

Data sources and methodology

Datasets used on this page
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	36 count points in 2025	15 September 2026
Reported collisions	Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring	2021 to 2025	449 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”.

How we calculate these figures All data sources

Contains public sector information licensed under the Open Government Licence v3.0.

How busy is the A428?

Route

A428 traffic and collisions by section

A428 traffic by vehicle type

A428 traffic trend

A428 collisions

Council areas on the A428

Roads that meet the A428

Data sources and methodology

Related statistics