Innovia Metro is an automated rapid transit system manufactured by Alstom. Innovia Metro systems run on conventional metal rails and pull power from a third rail but are powered by a linear induction motor that provides traction by using magnetic force to pull on a "fourth rail" placed between the running rails. However, newer versions of the technology are available with standard electric rotary propulsion.
An Innovia Metro 300 train of Rapid KL, Kuala Lumpur
Interior of Innovia Metro 300 train of Vancouver SkyTrain
Vancouver uses the original Innovia ART 100; the Innovia ART 200 vehicles (pictured here), whose articulated design allows for a more spacious interior; and the ART 300.
Four-car Bombardier Innovia Metro 300 (ART Mark III) train parked at Stadium–Chinatown station's spare platform in Vancouver
Automated guideway transit
An automated guideway transit (AGT) or automated fixed-guideway transit or automatic guideway transit system is a type of fixed guideway transit infrastructure with a riding or suspension track that supports and physically guides one or more driverless vehicles along its length. The vehicles are often rubber tired or steel wheeled, but other traction systems including air cushion, suspended monorail and maglev have been implemented. The guideway provides both physical support, like a road, as well as the guidance. An automated line can be cheaper to run than a conventional line, due to the shorter trains and stations.
Port Island Line AGT, Kobe, Japan (the world's first mass transit AGT)
VAL-208 type train in the Lille Metro
A Mark II train in Vancouver, Canada. The SkyTrain is the longest driverless transit system in the Americas.
The Tampa International Airport People Movers