warning lights

A general emergency alarm wailed, hundreds of warning lights flashed and the radiation meters showed a maximum reading.

I wondered if it was all dark back that way, or if those warning lights had begun to appear.

Seven miles to the east, the amber warning lights went dark and the detour barrier at Crossover 85 sank back into the roadway.

To their right, Clay caught the first glimpse of a set of flashing amber warning lights coming up from behind in the green lane.

It is to be hoped that, ere long, warning-lights or beacons will be erected all round the coast.

Instructions for the identification devices—description of the identification and warning lights.