Question to the Department for Transport:

To ask Her Majesty's Government, further to the Written Answer by Baroness Vere of Norbiton on 24 February (HL1571) and prior to their decision to conduct “an evidence stocktake to gather the facts about the safety of smart motorways”, (1) how many miles of smart motorways have been created to date, (2) what has been the total cost of that work, and (3) how many miles of such motorways had been planned.

1. The SRN has been expanding and evolving since the 1960’s, and in 2018 was 4,513 miles in length. The last 25 years has also seen conversion of parts of the motorway network to become smart motorways:

• Controlled Motorway (CM) - in 1995 the first mandatory variable speed limits used on the English motorway network were introduced on the M25 J10-J15. By the end of 2018, controlled motorways covered 137 miles of the network (around 3% of the SRN) and carried 7 billion vehicle miles of traffic (around 8% of total SRN traffic)

• Dynamic Hard Shoulder Running (DHS) - in 2006 the first hard shoulder to be opened to traffic was put into operation on the M42 J3a-7. This pilot scheme was originally known as active traffic management. By the end of 2018, Dynamic Hard Shoulder Running motorways covered 66 miles of the network (around 1% of the SRN) and carried 3 billion vehicle miles of traffic (around 3% of total SRN traffic)

• All Lane Running (ALR) - in 2014 the first ALR schemes went into operation on the M25 J5-7 and J23-27. By the end of 2018, ALR motorways covered 123 miles of the network (around 3% of the SRN) and carried 5 billion vehicle miles of traffic (around 5% of total SRN traffic).

The smart motorway evidence stocktake report and action plan was published on 12 March 2020 and is available on gov.uk.

I will write to you to answer your questions 2 and 3.