What happens to the stopping distance of a loaded commercial bus on wet, slushy, or icy asphalt compared to dry asphalt?

1. Stopping distance increases significantly (can be two to four times longer or more on ice)
2. Stopping distance decreases because water cools the brake friction linings
3. Stopping distance remains identical because ABS maintains constant deceleration
4. Stopping distance is reduced by 50% due to tyre micro-hydrodynamics