Question to the Department for Transport:

To ask the Secretary of State for Transport, how many miles of motorway have been converted to a smart motorway; and what the (a) mileage and (b) cost was for each conversion in each of the last five years.

The table below provides details for the projects which have opened to traffic since 2015/16, the length of the scheme in miles, and the latest approved outturn cost for each. The data shows that over 200 lane miles have been added to the motorway network through these schemes since 2015/16.