3-point question ( of )

What is the most effective way of speeding up a bus?

  1. By reaching the maximum RPM of the engine in all subsequent gears.
  2. By changing gears in such a way that the RPM of the engine is not lower than the starting value of the green area on the tachometer.
  3. By using all gears successively, even if the tachometer indicator is in the red area.