light signal in a sentence

Examples

1. If the doll's cries go unanswered, a yellow light signals neglect.
2. These give binocular vision and great sensitivity to small light signals.
3. The first electrically operated light signal system was delivered by AEG in 1924.
4. Electric light signals and crossing lights are also operated from the signal frame.
5. On the road was inculcated traffic light signals, communication on locomotives.
6. A colour-light signal existed here in semaphore days, having been installed in 1977.
7. Abergynolwyn has colour light signals, which are operated from the blockpost.
8. All signals are multiple aspect colour light signals fitted with Train stop arms.
9. Poincar?( 1900 ) analyzed the coordination of moving clocks by exchanging light signals.
10. Light signals are made using an underwater torch in dark places with reasonable visibility.