Question: Can an ABS (Anti-lock Braking System) instead of decreasing the breaking distance actually increase it? If yes, is this its general behaviour, or only in specific circumstances?

Wikipedia claims that on some surfaces (including loose gravel and snow) "ABS may significantly increase braking distance" without, however, explaining this alleged behaviour. The article provides references for this claim, but I could no find any substantiating information in them. Therefore I would like to submit to the community the questions

  • whether ABS can actually increase the breaking distance
  • and how is it physically possible, that on some surfaces the distance increases while on other it decreases ?

If possible, please back up your answer with citable references.


closed as off-topic by David Z Dec 10 '18 at 6:52

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question appears to be about engineering, which is the application of scientific knowledge to construct a solution to solve a specific problem. As such, it is off topic for this site, which deals with the science, whether theoretical or experimental, of how the natural world works. For more information, see this meta post." – David Z
If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ sorry, I'm a bit confused: why is it off-topic to ask if ABS increases the breaking distance while it is on-topic to ask if ABS decreases the stopping distance ? On which other SE site would the question better belong? Why was it closed instead of moved? many thanks for your help $\endgroup$ – summerrain Dec 19 '18 at 0:51
  • $\begingroup$ I would suspect the Wikipedia article to be in error. $\endgroup$ – David White Dec 19 '18 at 6:05