M4 junction 4 traffic signals upgrade, Heathrow Interchange (Terminals 2 & 3), West Drayton
We’re upgrading the traffic signals at junction 4 of the M4 in West Drayton with LEDs for greater energy efficiency and reliability.
Latest updates
-
21 February 2025
Upcoming traffic management: 21 February to 7 March 2025
Here are details about upcoming traffic management for the project:
Friday 21 February
- The western and northern sections of the roundabout will be closed overnight between 10pm and 6am
Monday 24 February
- The northern and eastern sections of the roundabout will be closed overnight between 10pm and 6am
Tuesday 25 & Wednesday 26 February
- The M4 junction 4 eastbound entry and exit slip roads and the northern section of the roundabout, will be closed overnight between 10pm and 6am
Thursday 27 & Friday 28 February
- The western and northern sections of the roundabout will be closed overnight between 10pm and 6am
Monday 3 & Tuesday 4 March
- The M4 junction 4 eastbound entry and exit slip roads and the northern section of the roundabout, will be closed
Wednesday 5, Thursday 6 & Friday 7 March - Overnight lane closures will be in place between 9pm and 6am
Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.
-
11 February 2025
Traffic management in February
We'll need the following closures in February:
Tuesday 11 February
M4 junction 4 eastbound entry and exit slip roads and northern section of the roundabout
Closed overnight (10pm to 6am).
Thursday 13 and Friday 14 February
Northern and eastern sections of the roundabout.
Closed overnight (10pm to 6am).
Monday 17 February
M4 junction 4 eastbound entry and exit slip roads and the northern section of the roundabout
Closed overnight (10pm to 6am).
Tuesday 18 February
Lane closures overnight (9pm to 6am).
Wednesday 19 February
M4 junction 4 eastbound entry and exit slip roads and the northern section of the roundabout.
Closed overnight (10pm to 6am).
Thursday 20 and Friday 21 February
Western and northern sections of the roundabout.
Closed overnight (10pm to 6am).
-
23 January 2025
Upcoming traffic management
Here are details of upcoming traffic management for the project during the next two weeks.
Monday 27 and Tuesday 28 January 2025
The M4 junction 4 eastbound entry and exit slip roads and the northern section of the roundabout, will be closed between 10pm and 6am.
Wednesday 29 and Thursday 30 January 2025
Overnight lane closures will be in place between 9pm and 6am
Friday 31 January 2025
The northern and eastern sections of the roundabout will be closed overnight between 10pm and 6am.
Monday 3 February 2025
The western and northern sections of the roundabout will be closed overnight between 10pm and 6am
Tuesday 4 and Wednesday 5 February 2025
The M4 junction 4 eastbound entry and exit slip roads and the northern section of the roundabout, will be closed between 10pm and 6am.
Thursday 6 February 2025
Overnight lane closures will be in place between 9pm and 6am
Friday 7 February 2025
The M4 junction 4 eastbound entry and exit slip roads and the northern section of the roundabout, will be closed between 10pm and 6am.
Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England site. Our travel alerts give details of live incidents on our network.
-
14 January 2025
Upcoming traffic management in January 2025
Week commencing 13 January
Overnight lane closures in place between 9pm and 6am.
Monday 20, Tuesday 21 and Wednesday 22 January 2025
M4 junction 4 eastbound entry and exit slip roads closed 10pm to 6am.
Thursday 23, Friday 24 and Saturday 25 January 2025
Northern and eastern sections of the roundabout closed overnight 10pm to 6am.
Sunday 26 January 2025
Western and northern sections of the roundabout closed overnight 10pm to 6am.
Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.
-
22 October 2024
We're starting our traffic signals upgrade soon
We’re upgrading the traffic signals at junction 4 of the M4 in West Drayton. The existing traffic lights need regular maintenance and are reaching the end of their serviceable life. They will be replaced with low-voltage LEDs for greater energy efficiency and reliability.
We’ll work overnight to minimise travel disruption as much as possible, mainly Monday to Friday but with occasional, overnight, weekend work.
Temporary traffic signals will be set up overnight between Saturday 2 and Sunday 3 November. They will be in place for the duration of the project, but other traffic management will be installed at 9pm and removed at 6am to keep the junction roadworks-free during the day.
For the safety of both road users and the workforce, lane closures and full carriageway closures will be required at different times as our work progresses.
First fortnight of overnight traffic management
Lane closures will be in place around the roundabout, between 9pm and 6am, from Monday 4 to Friday 8 November.
The northern section of the roundabout, including the eastbound exit and entry slip roads, will be closed between 10pm and 6am on Saturday 9 November.
The western and northern sections of the roundabout, including the junction 4 eastbound entry slip road, will be closed between 10pm and 6am from Sunday 10 to Friday 15 November.
The northern section of the roundabout, including the eastbound exit and entry slip roads, will be closed between 10pm and 6am on Saturday 16 and Sunday 17 November.Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England website. Our travel alerts give details of live incidents on our network.
Project information
Overview
The new traffic signals will use low-voltage LEDs instead of halogen bulbs for greater energy efficiency and reliability.
We will also install an additional controller unit. The new unit will allow for more control over individual traffic signals, so any issues can be localised and resolved quickly, simplifying future maintenance requirements.
We’ll also need to renew electrical ducts, cables, and cabinets and remove and install traffic signal poles and heads. This work will involve general construction activities such as saw cutting, drilling, and excavating.
We will try to carry out any noisier tasks at the start of our shift and use low-noise tools, where possible. We apologise for any disturbance our works may cause.
Benefits
The existing traffic lights need regular maintenance and are reaching the end of their serviceable life. They will be replaced with low-voltage LEDs for greater energy efficiency and reliability.
Diversion routes
When we need to fully close part of the roundabout, or a slip road, there will be a signed diversion route.
For closures on the roundabout traffic will be diverted via the adjoining Cherry Lane roundabout and return.
For closures of the M4 eastbound exit slip road, or the M4 westbound entry slip road traffic will be diverted via M4 junction 3 and return
For closures of the M4 westbound exit slip road, or the M4 eastbound entry slip road traffic will be diverted via M4 junction 5 and return
To search for a weekly look-ahead of scheduled road closures, please visit our daily road closure report, using the filter tool to select the M4. Roadside signs will also provide advance notice.
Documents
Traffic information
Information about scheduled roadworks and events on our motorways and major roads.X
Manage your cookie preferences to view the content on this page
Sign up for updates!
Keep up to date with what's happening on this scheme by signing up to our updates.
