Final answer:
An 'automatic stop' in a transit system is one that is activated automatically by the system's controls, not manually by the driver or for emergency purposes only.
Step-by-step explanation:
The term "automatic stop" as used in the transit system refers to a stop that is activated automatically by the transit system.
Unlike stops that require manual intervention from the driver (Option 1), an automatic stop is part of the system's integrated controls and is pre-programmed to occur at specific points along the route. This is not to be confused with an emergency stop (Option 3) which is used in unforeseen circumstances, nor is it necessarily the last stop on the line (Option 4).