light signal उदाहरण वाक्य

उदाहरण वाक्य

1. The operations of these elevators are synchronized by a light signal in the car.
2. Just then, screaming sirens and flashing lights signal the approach of another Washington motorcade.
3. Italian light signals consist of one to three single lamps.
4. According to the rules, light signals are used for main line traffic or shunting.
5. These semaphore signals remained until 1994 when the line was resignalled with colour-light signals.
6. The triangular color light signal was especially useful in physically restricted and confined areas.
7. Later they are replaced by red and green traffic-light signals.
8. A laser transmitted faint light signals to an electronic detector.
9. The signal box was removed when semaphore signals were replaced by colour light signals c2010.
10. A new modernization programme began in 1982, still using mainly two aspect colour light signals.