Highway 1 (Park Presidio thru Macarthur Tunnel, to Golden Gate Bridge
Doesn’t matter which way you’re heading,north or south through the Macarthur tunnel there’s always a cop waiting at each end all day. The highway is det up like freeway because it is, and the speed limit is 45mph. There is double stacked divider in the tunnel all the way to 101 which takes you on to the bridge. There is a large down grade that increases your speed when exiting the tunnel and at both ends no less.