May also be type of vehicle. Big farm truck in suburbs/rural, can't see anyone under ~3ft well when they're right up on you unless you're really intentionally looking down. Also could be the children are improperly trained. False sense of security, whereas in the city it's basically entrenched in anyone that as soon as you set foot outside that the cars are trying to slaughter everyone so kids & adults alike are always on alert. Whenever I live in the city I basically assume if I'm not in a city park a car is on the prowl to run me over at any minute, which means I'm not really caught unawares.