Question to the Department for Transport:

To ask the Secretary of State for Transport, whether his Department has made an assessment of the potential impact of (a) mass immigration and (b) population increase on the road system.

The Department for Transport published the latest National Road Traffic Projections in 2022. These are projections of road traffic, congestion and emissions for England and Wales. These include outputs for the Common Analytical Scenarios, a set of seven standardised, off-the-shelf, cross-modal scenarios exploring national level uncertainties for use in transport forecasting and appraisal. A full description of the scenarios can be found in the DfT Uncertainty Toolkit.