Question

Which of the following colours are used in a traffic signal?

• A. Blue
• B. Red
• C. Amber
• D. Green

Answer 1

Answer: (B), (C), (D)

The correct options are
B Red
C Amber
D Green

In the traffic signal, there are three colours used i.e. Red, Amber (or yellow) and Green.
The red light is to indicate that traffic should stop. Yellow light is to indicate that the traffic should wait for the light to change to red or green. Greenlight indicates that the traffic should move.