The Universal Design Tolerance for error helps minimize injuries and hazards in different environments. It provides safety and awareness around accidents and unintended things that may happen.

https://media.lanecc.edu/users/howardc/PTA103/103UniDesign2/103UniDesign211.html#:~:text=Tolerance%20for%20Error-,Definition,of%20accidental%20or%20unintended%20actions.