To ask the Secretary of State for Transport, what the mileage driven on (a) urban and (b) rural minor roads in (i) England, (ii) Scotland and (iii) Wales was of longer semi-trailers in his Department's trials in 2016 and 2017.
The 2016 Longer Semi-trailer mileage figures can be found on page 19 of the 2016 Annual Report which is available online. The trailers are not all fitted with GPS so estimates of urban/rural or other location information is being generated using route modelling based on the start and end postcodes of each journey. The initial modelling of 2016 data, for which both start and end postcodes were available, produced an average figures of 8% Urban (defined as Urban and Non-Motorway).
The 2017 annual report will be published in September 2018. It will contain 2017 data, including a breakdown by both urban/rural (based on ONS areas) and by road type (Trunk/Principal/Minor). The data has not been broken down by nation.