The police tells pedestrians about safety on the roads via a speaker on top of their van. London.
Item title reads - Mind your step! - Police van instructions for pedestrians.
M/S of bus and traffic in London street, people stand around. M/S of a subway as we hear a voice telling pedestrians about it. M/S of a policeman making the announcements from a van with a big speaker on top. M/S of a policeman directing pedestrians, M/S as they cross the road in front of the police van.