He is Head of Impairment Research at TRL, where he is responsible for research into the effects of all forms of driver impairment (e.g. fatigue, drugs, alcohol, distraction, ageing, mental health difficulties). Paul specialises in helping organisations to manage fatigue risk and has worked for clients in the aviation, road distribution and petrochemical industries, as well as the emergency services. He is also interested in the potential effects on driver safety of new in-vehicle technologies, and the issues surrounding human interactions with autonomous vehicles (AVs), both as a driver of these vehicles and as the driver of a normal vehicle interacting with AVs.