How does the hydroplaning (Aquaplaning) risk for a heavy commercial bus compare to that of a light passenger car?

1. Buses cannot aquaplane, because their axle loads are too high
2. Buses aquaplane at about half the speed of cars because of their greater length
3. High wheel loads and high tyre pressures raise the speed at which aquaplaning begins, but worn tread and deep standing water can still cause a total loss of control
4. Aquaplaning affects only the steered front axle, so directional control is never lost