|In a 29-month survey, researchers observed and recorded 20 instances of wild chimpanzees crossing a busy road in Sebitoli, in the northern part of Uganda's Kibale National Park. They watched 122 chimps cross the highway used by 90 vehicles an hour, many speeding at 70 to 100 kilometres an hour.
It's the first report on how chimpanzees behave crossing a very busy asphalt road, says Marie Cibot of the National Museum of Natural History in Paris. Chimps are exceptionally cautious when they cross the road. Ninety-two per cent of them looked right, left, or both ways before or during crossing, and 57 per cent ran across, showing that they knew the value of reaching the other side as quickly as possible.
The video below shows one alpha escorting a group across the road. He watches the progress of the stragglers while monitoring road traffic.