Some ancient cities had limits to the speed horses and chariots could move within those cities. Usually walking pace, which is about four mile per hour.
This was also the case in some countries when engine driven vehicles were introduced. Someone had to walk in front of the vehicle with a flag or lantern.
As fast as the horse pulling it. The locomotive, powered by steam, does not get invented until the 19th century.
carravel
Dr. Guillotin said that it was in "the twinkling of an eye".
don't expect to get fast answers here! perhaps you should consider learning how to do your own research for assignments.
12-13 mph
fast.
The average speed of any car should be the posted speed limit.
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.
A speed not fast enough to produce a noticeable wake.
the speed limit is 400mph
As fast as other cars get out of the way
The speed limit in any of the states!
They go the speed limit
Not for a first offense possibly. Depends upon the other circumstances, too. Say, if the speed limit was 35 and it was snowing heavily, one could receive a ticked for going the posted limit as that would be way too fast for the conditions. Just because there is a posted speed limit, the keyword here is "limit", that is the fastest speed that is allotted for that road ... it is not the 'required' speed to travel.
You can go as fast as you like. Legally, even one mile an hour over the speed limit can result in a ticket.
it depends on the current speed the speed limit and how fast your car can accelerate.
The speed that a train can go depends on the speed limit for a specific segment of track.