average speed for a bus
The Big Grey Dog (As its known in the industry) is traditionally limited to 72 mph top speed. The bus itself from leaving a downtown terminal to arriving at the next will usua â¦ lly cover ground between 35 and 45 miles per hour average. Depending on traffic and routing. Long haul routes tend to be a little quicker at about 75% of the speed limit. So a bus traveling on a trip that is primarily 70 mph will cover that ground at 52 mph average and never exceed the speed limit. (or at least its not supposed to).