The average speed from New York to Washington DC is 43MPH which hasn't change in the last 25 years. That should give you a idea of the Interstate avg speeds. One must account for traffic, road condition, normal congestion in high traveled areas. If you mean the average speed limit, it's probably 65 MPH. In 1995 Congress repealed the national speed limit of 55 and it is now up to states again to determine the limits. About 30 states have limits of 70 MPH or higher. A few Western states have no speed limits on certain stretches of highway.
There isn't one set speed limit for the whole of the United States. While there was a nationwide 55 MPH speed limit at one point, it's been done away with for a long time, and the speed limits vary across the country in accordance with state, county, and local legislation.
There is no "universal" answer. State and local highways are usually around 55 or 60 MPH, but can vary. Interstate highways, turnpikes and toll highways can have higher limits, up to 70 or 75 MPH, but again, this can vary.
It depends on the state since each states sets their own speed limits, both max/min.
Added: Usually the minimum speed is set at 45 mph.
that is too broad of a question but probably around 35-65 MPH
There is no overall federally mandated speed limit on US highways. The speed limits are set by the individual states.
It varies by state and type of highway. The highest speed limit is 80, which is found on Interstate highways in Texas in rural areas.
60 km/h
fast.
2600 RPM is around 70 MPH. The usual speed limit on most US roadways is 55 MPH or even less. 2600 RPM is actually fast compared to the US speed limits.
The average speed of any car should be the posted speed limit.
A speed not fast enough to produce a noticeable wake.
The speed limit doesn't change, but you are expected to make a reasonable adjustment to your speed to compensate for the conditions. So basically, as fast as you can go at or below the speed limit without getting into a wreck.
the speed limit is 400mph
As fast as other cars get out of the way
They go the speed limit
The speed limit in any of the states!
speed limit was 70 speed limit was 70
The speed has no limit. Everything is just imaginary.
There is no limit to how fast a Labrador can run. The exact speed depends on the individual animal tested.