Definition
A "trolleybus" (or "trolley bus") is an electric bus that draws power from overhead wires using trolley poles. Think of it as a hybrid between a bus and a tram 🚃. Unlike a regular bus, it doesn't use a combustion engine. It's quieter and produces zero emissions locally, making it more environmentally friendly. However, it is restricted to routes with overhead wires. Imagine a bus literally tethered to the power grid ⚡.