Jesse Norman MP has taken over responsibility for electric and autonomous vehicles, as well as Highways England, as a result of the recent cabinet reshuffle.
Both areas were previously looked after by John Hayes MP before his departure from the department on 9 January after nearly 18 months in post.
As well as his new responsibilities, Mr Norman retains the portfolio for road safety and cycling and walking policy.
His portfolio also includes: local roads policy and funding, international vehicle standards, motoring agencies, road freight and traffic.
Mr Norman has agreed to deliver a presentation, followed by a Q&A session, at the Young Driver Focus 2018 conference in London on 25 April.
Among the new arrivals to the DfT is Jo Johnson MP, although his responsibilities lay mainly within the rail industry, while Nusrat Ghani MP will look after accessibility across all transport modes, as well as buses and taxis.
The team will continue to be headed up by Chris Grayling MP, who took over the role of transport secretary in July 2016.