Motorway
M77 traffic and collisions
The M77 is a motorway of 19.6 miles, from Glasgow City to East Ayrshire. This page covers its traffic at 23 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 390m vehicle miles
- Average daily traffic 54,506 vehicles a day, both directions
- Busiest section 92,670 J1 to J2
- HGV share 6.7% of vehicle miles
- Traffic since 2019 +6.6% same count points
- Collisions, 2021 to 2025 45 2.6 per 100m vehicle miles
How busy is the M77?
On an average day in 2025, 54,506 vehicles passed each point on the M77, counting both directions. The busiest section is J1 to J2 (Glasgow City), with 92,670 a day; the quietest listed is M77 Slip Lane to A77, with 44,346.
Busiest sections, 2025
J1 to J2 carries 1.7 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| J1 to J2 Glasgow City · 1.7 mi · HGVs 4.4% | 92,670 |
| J2 to J3 Glasgow City · 1.4 mi · HGVs 7.4% | 80,731 |
| J3 to J4 Glasgow City, East Renfrewshire · 1.5 mi · HGVs 6.2% | 68,212 |
| B7087 to A726 East Renfrewshire · 2.4 mi · HGVs 7.2% | 53,707 |
| A726 to M77 Slip Lane East Renfrewshire, East Ayrshire · 5.3 mi · HGVs 7.8% | 51,873 |
| At M77 Slip Lane East Ayrshire · 2.3 mi · HGVs 7.8% | 48,761 |
| M77 Slip Lane to A77 East Ayrshire · 0.7 mi · HGVs 7.5% | 44,346 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
Glasgow City to East Ayrshire · 19.6 miles
M77 traffic and collisions by section
13 sections between junctions, in route order. Each is the average of its DfT count points, weighted by length. 8 short link roads and spurs (2.3 miles) count in the road’s totals but are not listed.
Sections Tap a column heading to sort
| # | |||
|---|---|---|---|
| 1 | M8 to M74/M77/M8Glasgow City | 40,755 | 7 |
| 2 | M74/M77/M8 to B768Glasgow City | 87,863 | 4 |
| 3 | B768 to M77Glasgow City | 5,631 | 0 |
| 4 | J1 to J2Glasgow City | 92,670 | 7 |
| 5 | J2 to J3Glasgow City | 80,731 | 4 |
| 6 | J3 to J4Glasgow City, East Renfrewshire | 68,212 | 7 |
| 7 | B7087 to A726East Renfrewshire | 53,707 | 3 |
| 8 | A726 to M77 Slip LaneEast Renfrewshire, East Ayrshire | 51,873 | 8 |
| 9 | At M77 Slip LaneEast Ayrshire | 57,131 | 0 |
| 10 | At M77 Slip LaneEast Ayrshire | 48,761 | fewer than 3 |
| 11 | At M77 Slip LaneEast Ayrshire | 48,876 | fewer than 3 |
| 12 | At M77 Slip LaneEast Ayrshire | 46,807 | 0 |
| 13 | M77 Slip Lane to A77East Ayrshire | 44,346 | 0 |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the M77 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.
M77 traffic by vehicle type
Cars and taxis make up 73.3% of the vehicle miles on the M77. HGVs account for 6.7%, rising to 7.8% on A726 to M77 Slip Lane.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 6.1% |
| 2001 | 5.8% |
| 2002 | 5.9% |
| 2003 | 5.8% |
| 2004 | 6.0% |
| 2005 | 6.0% |
| 2006 | 7.2% |
| 2007 | 6.8% |
| 2008 | 6.7% |
| 2009 | 6.2% |
| 2010 | 6.4% |
| 2011 | 6.3% |
| 2012 | 6.4% |
| 2013 | 6.4% |
| 2014 | 6.1% |
| 2015 | 6.1% |
| 2016 | 6.1% |
| 2017 | 6.4% |
| 2018 | 6.5% |
| 2019 | 6.4% |
| 2020 | 8.4% |
| 2021 | 8.1% |
| 2022 | 7.1% |
| 2023 | 6.5% |
| 2024 | 6.6% |
| 2025 | 6.7% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
M77 traffic trend
Traffic on the M77 came to 390 million vehicle miles in 2025. At the count points present in both years, it is up 6.6% on 2019, before the pandemic, and up 8.0% on 2015.
Vehicle miles a year
Like for like, traffic is up 65.0% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 118m |
| 2001 | 123m |
| 2002 | 126m |
| 2003 | 124m |
| 2004 | 131m |
| 2005 | 131m |
| 2006 | 286m |
| 2007 | 301m |
| 2008 | 310m |
| 2009 | 317m |
| 2010 | 307m |
| 2011 | 387m |
| 2012 | 327m |
| 2013 | 333m |
| 2014 | 345m |
| 2015 | 353m |
| 2016 | 355m |
| 2017 | 364m |
| 2018 | 365m |
| 2019 | 366m |
| 2020 | 266m |
| 2021 | 307m |
| 2022 | 342m |
| 2023 | 352m |
| 2024 | 359m |
| 2025 | 390m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 44,206 |
| 2001 | 46,315 |
| 2002 | 47,210 |
| 2003 | 46,689 |
| 2004 | 49,108 |
| 2005 | 49,309 |
| 2006 | 41,620 |
| 2007 | 43,801 |
| 2008 | 45,706 |
| 2009 | 47,716 |
| 2010 | 46,179 |
| 2011 | 48,369 |
| 2012 | 46,173 |
| 2013 | 46,970 |
| 2014 | 48,658 |
| 2015 | 49,815 |
| 2016 | 50,081 |
| 2017 | 50,841 |
| 2018 | 51,059 |
| 2019 | 51,098 |
| 2020 | 37,131 |
| 2021 | 42,963 |
| 2022 | 47,796 |
| 2023 | 49,182 |
| 2024 | 50,229 |
| 2025 | 54,506 |
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, 10 of the 23 count points were counted; DfT estimated the rest from earlier counts and local trends.
M77 collisions
Police recorded 45 collisions with the M77 as the first road from 2021 to 2025, fewer than 3 of them fatal or serious. That is 2.6 per 100 million vehicle miles, lower than the 4.9 for all motorways in Great Britain. On average there were 0.5 a year for each mile of road.
Reported collisions by year
Up 150.0% from 2021 to 2025.
| Year | Collisions |
|---|---|
| 2021 | 6 |
| 2022 | 9 |
| 2023 | 7 |
| 2024 | 8 |
| 2025 | 15 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 7 collisions were recorded at junctions where the M77 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 M77
In route order. Each is the highway authority DfT files the count points under.
- Glasgow City
- East Renfrewshire
- East Ayrshire
Roadworks on the M77 in Scotland
The Scottish Road Works Register lists 96 sets of roadworks on the M77 in Scotland, 8 of them under way. 95 close the road, a lane or a slip road. From the extract of 16 September 2026.
-
M77 Southbound Junction 2 On Slip From Silverburn Shopping Centre, Glasgow
-
M77 Southbound Junction 2 Off Slip To Barrhead Road, Glasgow
-
M77 Southbound Junction 3 Off Slip To Nitshill Road (plus 1 more), Glasgow
-
M77 Southbound Junction 2 To Junction 3, Glasgow
-
M77 Southbound Junction 2 On Slip From Silverburn Shopping Centre, Glasgow
-
M77 Southbound Junction 3 Off Slip To Nitshill Road, Glasgow
Works in Scotland only, and only where the register records them against the road number. The register publishes one extract a day, so works can start, finish or change after it is taken. Roadworks across Scotland
Source:SRWR Extract of 2026-09-16 Updated
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 | 23 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 45 reported collisions | 15 September 2026 |
| Roadworks | Scottish Road Works Register open data Scottish Road Works Commissioner | Extract of 2026-09-16 | 22,074 sets of roadworks recorded in Scotland | 16 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.