Final answer:
ABS does not necessarily shorten the stopping distance; its primary function is to prevent the wheels from locking up, allowing for better control over the vehicle during braking. So, ABS can sometimes result in a longer stopping distance on certain road surfaces.
Step-by-step explanation:
If your bus is equipped with ABS (Anti-lock Braking System), it is a common misconception that ABS will shorten your stopping distance. However, the main function of ABS is to maintain traction between the tires and the road surface, therefore preventing the wheels from locking up and allowing the driver to maintain steering control. While ABS can help drivers to better handle the vehicle during sudden braking, especially in slippery conditions, it does not necessarily lead to a shorter stopping distance. In fact, the stopping distance can sometimes be longer with ABS, especially on loose surfaces such as gravel or snow-packed roads.
Therefore, the correct answer to the question is c. 0%. ABS does not guarantee a shorter stopping distance but does provide better control during braking situations.