In some towns, e.g. Aylesbury, Arriva provides a network of local bus services, not just longer routes linking towns together. And in some places, Arriva buses serve a wide area, with links between towns and villages across that area. These make it easy for you to change between services and get to a wider range of places.
Where we run networks of services there is a network or area map showing all the services available, not just your own local bus route.