Bolivian Spanish word
el ayudante
Meaning: the driver's helper / conductor
How it is used in Bolivia
On Bolivian buses the ayudante rides with the driver, calls the stops, and manages the passengers at moments like Tiquina. When he says 'se bajan todos', that's your cue, it's routine, not an emergency.
Learn it in a real situation
Explore Lake Titicaca and Copacabana, Practical Spanish