when you come to think of it, who would actually be able to calculate on the spot wether or not the pedestrian is with in the 170m range if your driving a saloon?

I say: just be cautious, and dont take the risk

worse case scenerio, dont slam the brakes (unless youve got abs) and do your best to control the car

(to all you parents, let your kids play video games, its more or less a simulation of different scenerios)