Drivers are set to experience long delays on the A40 for months due to HS2 works. The busy West London stretch will be reduced to two lanes from Monday, May 27 until late October this year between Hanger Lane and Alperton Lane in Ealing.

Additionally, TfL has confirmed the A40 will be turned into a contraflow system during a series of overnight lane reductions. These measures will be in place from 10pm until 5am the following day to ensure work in the A40 tunnels can be carried out safely, says Yahoo News.

From Thursday, June 27 a temporary 20mph speed limit will be in place in the works area. TfL says this will ensure the safety of workers during later phases of the construction works.

Drivers have been warned to expect long delays on all approaches to Hanger Lane via the A40 and A406, especially during peak hours. Local routes in Ealing and Wembley are also expected to be impacted by traffic.

If you’re travelling east into London, TfL recommends you se the A312 The Parkway, or the A406 North Circular before connecting with the A4/M4. If you’re driving west out of Central London, drivers have been advised to use the A205 South Circular or the A4.

Works on the A40 were initially due to start on May 6 and finish in September, but were subsequently delayed for a few weeks.