  Automated vehicles can implement strategies to drive with optimized fuel
efficiency. Therefore, automated driving is seen as a major advancement in
tackling climate change. However, with automated vehicles driving in cities and
other areas rife with other road users such as human drivers, pedestrians, or
cyclists, there is the potential for "stop-and-go" traffic. This would greatly
diminish the possibility of automated vehicles to drive fuel-efficient. We
suggest using external communication of automated vehicles to aid in ecological
driving by providing clues to other road users to show the intent and therefore
ultimately enable smoother traffic.
