Smart motorways

Information about England's new "smart motorways".

Some motorways in England are using technology to manage congestion. These are known as smart motorways.

On a smart motorway:

  • never drive under a red “X”
  • keep to the speed limit shown on the gantries
  • a solid white line indicates the hard shoulder - don’t drive in it unless directed.
  • a broken white line indicates a normal running lane
  • use the refuge areas for emergencies if there’s no hard shoulder
  • put your hazard lights on if you break down

Find out more about driving on smart motorways.


What does a red X mean? Get smart, know your motorways


What is a smart motorway?

Never drive under a red x

M25 junction 23 eastbound drive through

What you will see - M25 Junction 23 simulation showing smart motorway features

Campaign materials

Use these materials to help Highways England raise awareness of smart motorways.

  1. Smart motorways: better watch your speed campaign

    • Promotional material