This video is about a roe deer in Yorkshire in England.
Translated from daily Tubantia in the Netherlands:
Wildlife mirrors save lives of roe deer
July 21, 09:24
Last year “only” 35 deer died. “That’s about 20 percent lower than in other years,” said Jurgen Hejink, secretary of the Wildlife Management Unit (WBE) Winterswijk and surroundings.
Blue reflectors are placed by the game management units along several roads in the Achterhoek. Roe deer are scared of light rays of cars that are reflected by the blue reflectors. That keeps them from running on the roads.
Saving roe deer lives from traffic: here.