Those are de-jure numbers. Add 50% to get de-facto numbers. So yeah, 50 MPH is normal for residential. The highways marked 65 MPH are actually 100 MPH.
Speed limits suffer from a NIMBY problem. Everybody wants to the limit to be 5 MPH around their own home, but 125 MPH when traveling elsewhere. The locals control the limits. The same goes for speed bumps, often loved by the locals but hated by everybody else.
Speed limits suffer from a NIMBY problem. Everybody wants to the limit to be 5 MPH around their own home, but 125 MPH when traveling elsewhere. The locals control the limits. The same goes for speed bumps, often loved by the locals but hated by everybody else.