You are on a three-lane motorway and see this sign. It means you can use

Explanation: Mandatory speed limit signs above all lanes including the hard shoulder, show that you are in an Active Traffic Management (ATM) area. In this case you can use the hard shoulder as a running lane. You must stay within the speed limit shown. Look out for any vehicles that may have broken down and be blocking the hard shoulder.

Category: Motorway Rules

References: The Official DVSA Guide to Driving: Section 18, Highway Code: Rule 269