Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, whether the Government has made an assessment on the efficacy of installing in-road apparatus to reduce nitrogen dioxide emissions and concentrations of particulate matter from motor vehicles on UK roads.

The Government is aware of this emerging technology but notes that it is still in development. Currently there is limited peer reviewed evidence available on real world application and the impact of the technology on concentrations of nitrogen dioxide and particulate matter. Defra and DfT will continue to assess the operational relevance of promising science and technology such as this on an ongoing basis.