To ask the Secretary of State for Transport, with reference to the Answer of 17 January 2017 to Question 59048 and pursuant to the Answer of 22 January 2018 to Question 122503 on Speed Limits, for what reasons (a) the research commissioned by his Department into the effects of 20 mph speed zones and (b) his Department's report have yet to be published.

The research project has been extended to allow for the inclusion of an additional piece of research to compare speed data from 20mph roads with 30mph roads, which will make the evidence base more robust. The research project is expected to be completed, and the final report is expected to be published later this year.