Automatic train control is a general class of train protection systems for railways that involves a speed control mechanism in response to external inputs. For example, a system could effect an emerge
Japanese-style ATC cab signalling indicator
A Tokyu Corporation train with ATC-10 indicator operating under normal conditions
The said ATC-10 indicator with ORP (Over Run Protector) engaged near the end of the ATC coverage area
Speedometer in a 0 series driver's cab, showing the ATC cab lights on top of the speed indicators
Automatic train operation is a method of operating trains automatically where the driver is not required or is required for supervision at most. Alternatively, ATO can be defined as a subsystem within
Automatic train control
…granular deceleration patterns in lieu of the rigid stops encountered with the older automatic train stop (ATS) technology. ATC can also be used with automatic train operation (ATO) and is usually considered to be the safety-critical part of a railway system. There have been numerous different safety systems referred to as…
Pictured is a train cab of a Kawasaki–CRRC Sifang T251 train serving the Mass Rapid Transit's Thomson–East Coast Line in Singapore. This line runs under ATO GoA 4, which is automatically controlled without any on-board staff.
A diagram representing the different levels of automation possible on railways
Early ATO trial on a R22 train at track 4 of the 42nd Street Shuttle (right) in 1962