A3 (PORTSMOUTH ROAD) Traffic

London to Portsmouth

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Traffic incidents

The following traffic incidents and congestion for A3 have been reported by Highways England, Traffic Scotland, Traffic Wales or Transport for London (TfL) in the last two hours:


There are no current incidents in this location.

A3 Roadworks

The following roadworks have been reported by various highways agencies and official transport sources.Click on a roadworks item to view more details on the traffic map.

ROAD WORKS
Location: The A3 northbound between the junctions with the A244and the A309 .
Lane closures: Lane one will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 23:00 on 21 Mar 2025 to 06:00 on 22 Mar 2025.
Schedule: From 22:00 on 24 Mar 2025 to 05:30 on 25 Mar 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 1.34m from Surbiton.
ROAD WORKS
Location: The A3 northbound between the A244and the junction with the A309 .
Lane closures: Lane one will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 23:00 on 21 Mar 2025 to 06:00 on 22 Mar 2025.
Schedule: From 22:00 on 24 Mar 2025 to 05:30 on 25 Mar 2025.
Lanes Closed: There will be one of three lanes closed.
Nearest town: 1.27m from Chessington.

A3

The A3 is a major trunk road in the United Kingdom, connecting London with Portsmouth. It passes through South West London, Surrey, Hampshire and into Portsmouth where it links up with other major routes.

The history of the A3 road as we know it today dates back to the 1920s. It was first constructed as the London-Portsmouth Trunk Road, offering a direct route from London to Portsmouth. Over the years, it has been upgraded to reflect the growing importance of motor vehicles, and the recent widening of the A3 into two lanes in each direction has made it one of the busiest roads in the country.

The busiest times on the A3 are usually during rush hour when commuters are travelling to and from work. During the holidays, it can also become very busy as tourists flock to popular destinations located along the route, such as Arundel or Portsmouth.

In terms of traffic flow, the A3 has an average speed of around 63 mph. This is slightly lower than the 70mph national speed limit. However, this is still an impressive speed when taking into account the high levels of traffic that it carries.

The safety statistics for the A3 are generally positive. Since 2013, fatal traffic accidents have decreased by 32%, with less than 5 fatalities reported each year. This is the result of increased enforcement, improved infrastructure and better driver education.


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LEGAL NOTICE

Please remember that it is against the law to use your mobile phone, tablet or any electronic device without a hands-free kit whilst driving.If you're caught by the police using any device that can send or receive data whilst driving or riding a motorcyle you'll get an automatic fixed penalty notice, 6 points on your licence and a fine of £200.A court could also disqualify you from driving.

Elsewhere on the web:

National Highways TrafficNational Highways England

Official source of traffic updates.

Transport for LondonTransport for London (TFL)

Transport for London's (TfL) portal for transportation in London.

Traffic WalesTraffic Wales

The Welsh government's traffic information service for Wales.

Traffic ScotlandTraffic Scotland

Live traffic conditions and news for Scotland's road network.

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Location: northbound between the junctions with the A244and the A309 .

Lane Closures : Lane one will be closed.

Due to: Roadworks are planned.

Status : Pending.

Schedule : From 23:00 on 21 March 2025 to 06:00 on 22 March 2025.

Schedule : From 22:00 on 24 March 2025 to 05:30 on 25 March 2025.

Lanes Closed : There will be one of two lanes closed.
Nearest town: 1.34m from Surbiton.

51.37--0.32

Location: northbound between the A244and the junction with the A309 .

Lane Closures : Lane one will be closed.

Due to: Roadworks are planned.

Status : Pending.

Schedule : From 23:00 on 21 March 2025 to 06:00 on 22 March 2025.

Schedule : From 22:00 on 24 March 2025 to 05:30 on 25 March 2025.

Lanes Closed : There will be one of three lanes closed.
Nearest town: 1.27m from Chessington.

51.36--0.32