“Back” – an essential word. You need to know how to say this in the local language. If you are in a coach party and the driver didn’t succeed in stopping the vehicle until you are minutes walk away from your sign, maybe out of sight, round a bend, how happy are your fellow passengers going to be with a five minute wait for a difficult to explain reason? You must learn the phrases necessary to persuade the driver to back his coach up to within easy reach of the sign.