I came across this really cool video of a bus driver in London, who potentially helped a biker riding an electric bike, avoid a disaster collision with a pedestrian. He signalled to the biker out of his window, making a hand gesture at about the 1.30minute mark of the youtube clip, for them to slow down. I love the good will shown by both the bus driver and biker after the realisation of what just happened, with a nice fist bump!