5mph
if im not mistaken its 20-30 mph
826 limit
bandwidth
the posted speed limit
When another speed limit sign is reached that changes the limit from the previously posted one.
The speed limit in the fast lane is the same as the speed limit for the road or highway you are driving on.
The speed limit is exactly that - the speed limit. While a reasonable excess of speed might be overlooked when overtaking another vehicle, there is no guarantee. You can be pulled over and cited for speeding, still.
The posted speed limit is the max speed.
In the UK the speed limit comes into force as soon as you pass the speed limit sign. As such the distance is zero as you should have slowed down to the posted speed limit before passing the sign.
The humps do not affect the speed limit. The speed limit is determined by other rules and signs.
Most states have residential speed limits between 10 and 55. A "safe" speed would probably be between 20 and 30, and most states have the highest or lowest speeds for residential areas in that range.
Whatever the posted speed limit is.