traffic lights
US /ˈtræf.ɪk ˌlaɪts/
UK /ˈtræf.ɪk ˌlaɪts/

1.
semáforo, luces de tráfico
a set of automatically operated colored lights, typically red, yellow, and green, for controlling the flow of traffic at road junctions or pedestrian crossings
:
•
The car stopped at the traffic lights.
El coche se detuvo en los semáforos.
•
Turn left at the next set of traffic lights.
Gira a la izquierda en los próximos semáforos.