check your wheel bearing
if the speed is increasing at 3 m/s2 then that is the acceleration (if i understand the question correctly)
What kind of tires do you have? Sometimes large tires and especially off-road tires will hum as you drive on pavement. Try taking your truck down a dirt road, the humming should be less noticeable on a softer road surface.
there is no exact speed there all different you would have to search the road. :)
Posted speed limits tell you what the maximum speed is on that specific road. That is the speed that you are legally able to drive on the road.
bitumen pitch means road surface
No. The loud humming noise could be a wheel bearing going bad and it could damage the ABS sensor if allowed to continue.
Possibly the wheel bearing.
sounds like tire/road noise
Brook Road Academy's motto is 'Increasing Excellence by Decreasing Standards'.
the same speed
This is because the momentum of high speed vechicle is more than that of the low speed vechicle
The road is called "autobahn."