The BestMile driverless buses are designed to aid commuters in directly reaching their front doors -- which is something the public transport doesn't ensure. The shuttle service is a small bus that can carry up to nine passengers. The goal for these buses is to take passengers from bus stops directly to their homes, which might not always be directly on the route of city buses.
The ultimate reasoning for the BestMile driverless buses is to ensure each citizen's safety. It also allows the drivers of the regular bus routes to continue their scheduled stop without adding additional stop requests.
As the name entails, the buses "are designed to cover the last mile, or the gap between a regular bus or metro stop and the passenger's own front door." These buses are set to launch within the Swiss city of Sion for a two-year trial run at the beginning of spring 2016.