stoplight

US /ˈstɑːp.laɪt/
UK /ˈstɑːp.laɪt/
"stoplight" picture
1.

semaforo

a set of automatically operated colored lights, typically red, yellow, and green, for controlling traffic at road junctions and pedestrian crossings.

:
The car stopped at the stoplight.
L'auto si è fermata al semaforo.
Wait for the stoplight to turn green before crossing.
Aspetta che il semaforo diventi verde prima di attraversare.