Trolley coach, also known as a trolleybus or trackless trolley, is a type of electric bus that runs on a set of overhead wires and is powered by electricity. Some synonyms for a trolley coach include electric bus, electric trolley, overhead electric bus, and electric trackless trolley. These buses are popular for their eco-friendliness and quiet operation. They emit zero emissions, making them a favorite among environmentalists and public transportation officials. Trolley coaches are commonly used in urban transit systems and are a reliable option for mass transit. These buses come with a range of modern features that make the ride comfortable, safe, and efficient, making them an increasingly popular option for public transport.