He might have had his hand on the master controller, which accelerates the train by adjusting electricity fed to the motor.
The master controller is one-handle type with a T-shape handle.
If necessary, he can then make instantaneous reports to the master controller, who sits up there on the balcony.
Initially there was only one position for the driver which give difficulties, and a second master controller was soon added.
There is provision to designate a new bus control computer in the event of a failure by the current master controller.
And, it communicates at any time i to the master controller whether or not w(0,i) αβ*.
You can daisy-chain it, and has one master controller and many slaves.
All of the control systems are closed loop systems which are directed by the master controller initial program settings.
The master controller generally is found in the work station.
Since Seaton's head was inside his master controller, no speaker sounded.