brezky214life
contestada

Traffic signals at expressway on-ramps use
what color of lights.
A. yellow and green
B. yellow and red
C. red and blue
D. red and green

Respuesta :

cassibo792057
Answer: Red and Green

Explanation: View photo from a government traffic website!
Ver imagen cassibo792057
DanXO1

Answer:

D

Reason:

Red had been used to indicate danger, so they decided that green would mean go.