Question to the Department for Transport:

To ask Her Majesty's Government what calculations, if any, they have made of the savings that would result if the speed limit in roadworks on the M4 was increased from 50 to 60 miles per hour.

Highways England has not assessed the specific savings of using a 60mph speed limit in the roadworks on the M4 between junctions 3 and 12. However, Highways England and its supply chain are currently assessing whether there are opportunities for this higher speed limit to be introduced on the M4. In all cases, careful consideration has to be given to the safety implications of increasing speed limits in roadworks, and not all roadworks will be suitable for a higher speed limit.