In-motion charging electric bus

In-motion charging (IMC) electric bus, also known as a battery trolleybus or trolleybus with extended autonomous run, is an electrically powered public transport vehicle that draws power from an overhead contact network (catenary) via trolley poles while simultaneously charging an on-board traction battery. This technology allows the vehicle to operate continuously: drawing power and charging while under the overhead wires, and operating as a battery electric bus on sections of the route lacking this infrastructure.

Source: Wikipedia — In-motion charging electric bus (CC BY-SA 4.0)