Helene Lidestam has a Ph.D. in Optimization and is a professor of production economics at Linköping University. She is also a senior researcher at the Swedish National Road and Transport Research Institute (VTI) and research leader at K2 with a specific responsibility for research related to "Organization and Collaboration." Helene has extensive experience from research on public transport and collaboration with public transport authorities, traffic operators and industry organizations. Her research focuses on sustainable public transport in general, with a more specific emphasis on flexibility, environmental impact, and costs. Many of her research questions arise from procurement and related issues.