Introduction
Mobility is a significant basis for quite a number of private and economic activities. Thus, it forms a critical part of our everyday life. In many countries, mobility demand is mainly met by road traffic, with modern automobiles and road networks allowing for a high level of individual mobility. However, there are issues that are a consequence of this mobility. For example, mobility results in significant environmental problems in terms of carbon dioxide emissions that are mainly attributed to the burning of gasoline. Another problem is the declining fuel reserves and the subsequent rise in oil prices which translates to rising fuel prices. For ...