This is definitely part of the problem. WH resident. Speed limit on my street is 25mph (I’m in a school zone, rest of the street is 30mph) but road is designed for cars to go 40-45mph I’d say. A decent number of cars obey speed limit near my house because of all the school zone signage, but also see plenty of cars in that 40-45mph range on a daily basis. Have also seen cars go by doing 70-80mph on occasion.