When a group of pedestrians walks along the road at night, what lights must they carry?
En español: Cuando un grupo de peatones camina por la carretera de noche, ¿qué luces deben llevar?
Why this is the correct answer
Groups of pedestrians must walk in single file: those at the front carry a white or yellow light and those at the back a red light, so drivers can see where the line begins and ends.