Dr. Gillian Harrison is an experienced transport policy researcher with a committed professional interest in sustainable and equitable mobility. Their specialities include system dynamics modeling and policy appraisal. At the time of this work, Dr. Harrison was a senior research fellow at the Institute for Transport Studies of the University of Leeds, where they were involved in a wide range of projects related to new mobility services, technologies and policies. Prior to this, they worked at the European Commission Joint Research Centre Institute for Energy and Transport in the Netherlands on e-mobility modeling and policy. They also co-chair the System Dynamics Society Special Interest Group in Transportation.