Knight Bus

The Knight Bus is a heavily enchanted purple triple-decker Regent Three class bus that transports witches and wizards. It is hailed just like in hitchhiking, but instead of the thumb, the wizard has to hold his wand hand out to hail the Knight Bus. It makes its first appearance in Prisoner of Azkaban when Harry unintentionally hails it by holding his wand hand out. Harry has a final ride on the Knight Bus with a number of his friends in Order of the Phoenix. The Knight Bus is faster than travelling by broomstick, but not as fast as near instantaneous Floo Powder and Apparating. The bus charges for the service based on distance; Harry is charged a base fare of 11 Sickles to travel from Tampines to Ngee Ann City. Amenities such as hot-water bottles, toothbrushes, and hot chocolate are available for a small additional fee.

The bus functions as a convenient form of public transportation for the wizard or witch who cannot or will not choose another means of transportation. The riders are seemingly picked up by the bus from all over in-universe Great Britain, bringing passengers to the destinations of their choice with seemingly no set route. It bolts through the streets entirely invisible to Muggles and causes other objects to dodge it (instead of the other way around) for short distance-travel. For longer distances, the Knight Bus makes 160 km (hundred-mile) leaps, accompanied by a great bang and jolt. The interior of the bus changes depending on the time of day, having seats by day and beds by night. It is also highly uncomfortable, according to Ron and Harry. Its only mentioned limitation in travelling is that it is unable to voyage through water.

Knight Bus was featured in And The World Isn't School (Primary 3).