A-road
A899 traffic and collisions
The A899 is an A-road of 6.8 miles, in West Lothian. This page covers its traffic at 6 DfT count points since 2000 and the collisions police recorded on it.
- Traffic in 2025 51m vehicle miles
- Average daily traffic 20,586 vehicles a day, both directions
- Busiest section 40,338 A705 to A71
- HGV share 2.4% of vehicle miles
- Traffic since 2019 −4.7% same count points
How busy is the A899?
On an average day in 2025, 20,586 vehicles passed each point on the A899, counting both directions. The busiest section is A705 to A71 (West Lothian), with 40,338 a day; the quietest listed is A89 to B8020 Greendykes Road, with 7,772.
Busiest sections, 2025
A705 to A71 carries 2.0 times the road’s average flow.
| Section | Vehicles a day |
|---|---|
| A705 to A71 West Lothian · 1.4 mi · HGVs 2.1% | 40,338 |
| M8 to A705 West Lothian · 1.5 mi · HGVs 2.5% | 31,253 |
| B8046 Station Rd to A89 West Lothian · 0.9 mi · HGVs 2.1% | 8,815 |
| B8020 Greendykes Road to B8046 Station Rd West Lothian · 1.8 mi · HGVs 0.9% | 8,005 |
| A89 to B8020 Greendykes Road West Lothian · 0.8 mi · HGVs 5.5% | 7,772 |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Route
In West Lothian · 6.8 miles
A899 traffic and collisions by section
6 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 | A89 to B8020 Greendykes RoadWest Lothian | 7,772 | – |
| 2 | B8020 Greendykes Road to B8046 Station RdWest Lothian | 8,005 | – |
| 3 | B8046 Station Rd to A89West Lothian | 8,815 | – |
| 4 | A89 to M8West Lothian | 20,188 | – |
| 5 | M8 to A705West Lothian | 31,253 | – |
| 6 | A705 to A71West Lothian | 40,338 | – |
Vehicles a day is the average daily flow in 2025. “Since 2019” compares the same count points. Collisions are those with the A899 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.
A899 traffic by vehicle type
Cars and taxis make up 81.1% of the vehicle miles on the A899. HGVs account for 2.4%, rising to 5.5% on A89 to B8020 Greendykes Road.
Vehicle mix, 2025
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
HGV share of traffic
| Year | HGV share |
|---|---|
| 2000 | 3.8% |
| 2001 | 3.4% |
| 2002 | 3.3% |
| 2003 | 3.8% |
| 2004 | 3.9% |
| 2005 | 3.8% |
| 2006 | 3.8% |
| 2007 | 3.6% |
| 2008 | 3.6% |
| 2009 | 3.5% |
| 2010 | 3.5% |
| 2011 | 3.1% |
| 2012 | 2.8% |
| 2013 | 2.7% |
| 2014 | 2.8% |
| 2015 | 2.8% |
| 2016 | 2.9% |
| 2017 | 2.9% |
| 2018 | 3.0% |
| 2019 | 2.9% |
| 2020 | 3.2% |
| 2021 | 3.1% |
| 2022 | 2.7% |
| 2023 | 2.6% |
| 2024 | 2.5% |
| 2025 | 2.4% |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
A899 traffic trend
Traffic on the A899 came to 51.1 million vehicle miles in 2025. At the count points present in both years, it is down 4.7% on 2019, before the pandemic, and up 0.6% on 2015.
Vehicle miles a year
Like for like, traffic is up 18.9% on 2000.
| Year | Vehicle miles |
|---|---|
| 2000 | 41m |
| 2001 | 47m |
| 2002 | 47m |
| 2003 | 49m |
| 2004 | 49m |
| 2005 | 50m |
| 2006 | 49m |
| 2007 | 51m |
| 2008 | 50m |
| 2009 | 49m |
| 2010 | 48m |
| 2011 | 48m |
| 2012 | 47m |
| 2013 | 48m |
| 2014 | 49m |
| 2015 | 49m |
| 2016 | 51m |
| 2017 | 51m |
| 2018 | 53m |
| 2019 | 54m |
| 2020 | 40m |
| 2021 | 45m |
| 2022 | 47m |
| 2023 | 48m |
| 2024 | 49m |
| 2025 | 51m |
Source:DfT,UK Motoring analysis 2000 to 2025 Updated
Average daily flow
| Year | Vehicles a day |
|---|---|
| 2000 | 17,191 |
| 2001 | 19,386 |
| 2002 | 19,498 |
| 2003 | 20,343 |
| 2004 | 20,251 |
| 2005 | 20,734 |
| 2006 | 20,366 |
| 2007 | 21,076 |
| 2008 | 20,622 |
| 2009 | 20,229 |
| 2010 | 19,965 |
| 2011 | 19,957 |
| 2012 | 19,407 |
| 2013 | 19,985 |
| 2014 | 20,241 |
| 2015 | 20,223 |
| 2016 | 21,272 |
| 2017 | 21,291 |
| 2018 | 21,435 |
| 2019 | 21,608 |
| 2020 | 15,971 |
| 2021 | 18,038 |
| 2022 | 19,013 |
| 2023 | 19,350 |
| 2024 | 19,634 |
| 2025 | 20,586 |
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 6 count points were counted; DfT estimated the rest from earlier counts and local trends.
A899 collisions
Police recorded fewer than 3 collisions with the A899 as the first road from 2021 to 2025, fewer than 3 of them fatal or serious.
Reported collisions by year
Down 50.0% from 2021 to 2025.
| Year | Collisions | Fatal or serious |
|---|---|---|
| 2021 | 14 | fewer than 3 |
| 2022 | 6 | 0 |
| 2023 | 10 | 3 |
| 2024 | fewer than 3 | 0 |
| 2025 | 7 | 4 |
Source:DfT STATS19,UK Motoring analysis 2021 to 2025 Updated
A further 10 collisions were recorded at junctions where the A899 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 A899
In route order. Each is the highway authority DfT files the count points under.
- West Lothian
Roadworks on the A899 in Scotland
The Scottish Road Works Register lists 13 sets of roadworks on the A899 in Scotland, 3 of them under way. 11 close the road, a lane or a slip road. From the extract of 16 September 2026.
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A899 - Houstoun Interchange, Knightsridge
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A899 - Houstoun Interchange, Knightsridge
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A899 - Houstoun Interchange, Knightsridge
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A899 - Houstoun Interchange Dual To Livingston East Roundabout, Knightsridge
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A899 - Cousland Interchange Dual To Houstoun Interchange, Livingston
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A899 - Centre Interchange Dual To Almond Interchange, Almondvale
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 | 6 count points in 2025 | 15 September 2026 |
| Reported collisions | Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring | 2021 to 2025 | 39 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.