You’re on a smart motorway. What does it mean if a red cross is showing above the hard shoulder and mandatory speed limits above all other lanes?

A red cross above the hard shoulder shows that it’s closed as a running lane and should only be used for emergencies or breakdowns. On a smart motorway, the hard shoulder may be used as a running lane at busy times. This will be shown by a mandatory speed limit on the gantry above the hard shoulder.