> roads (not highways)
Why not highways? That's an arbitrary line to draw.
In much of the US, some types of highways do have a minimum speed. It varies by state (and can even vary within a state). I believe most places have a minimum on Interstates of 40 MPH.
In much of the US, some types of highways do have a minimum speed. It varies by state (and can even vary within a state). I believe most places have a minimum on Interstates of 40 MPH.