The DLR is operated by 149 high-floor bi-directional single-articulated Electric Multiple Units (EMUs). Each car has four doors on each side, and two or three cars make up a train. There are no cabs because normal operations are automated, and a small driver's console is concealed behind a locked panel at each end, from which the PSA can drive the car. Consoles at each door opening allow the PSA to control door closure and make announcements whilst patrolling the train. With the absence of a driver's position, the fully glazed car ends provide a forward and rear view for passengers. The top speed is .