Explanation: It is all of these because you need a vehicle to be transported, the vehicle needs to have control by a human which are people, and roadways are needed to drive on.
Brake mean effective pressure is a method to calculate the engine cylinder pressure which would give the measured brake horsepower. Brake mean effective pressure is used to identify engine efficiency regardless of capacity or engine speed.
It is used to identify engine efficiency.It is measured by means of transducers or pressure gauges.
