These signals operate on the same principle.

The primary difference between the games is how signals operate.

The station's main AM non-directional signal operates at 5,000 watts.

She added that all the equipment and signals were operating correctly.

The outgoing signal to Earth was still operating, carrying complete details of everything that happened.

The following year, the signal operated for 440 hours.

The potential signal has been operating for at most three months.

A local road crosses the line at the western edge of the platforms, where a signal box and manually operated crossing gates can be seen.

In signal coordination, most signals operate in a semi-actuated mode.

This permits signals to operate automatically with the passage of trains, enforcing the distance between them.