What is the maximum speed limit violation one can commit while passing another vehicle?

When passing another vehicle, a driver is permitted to exceed the posted speed limit. This is because the law recognizes that an increase in speed may be necessary to safely complete the maneuver in a timely manner, particularly to avoid oncoming traffic or to prevent a dangerous situation. However, this does not imply that drivers should speed recklessly or exceed the limit by a significant margin; the intent is to ensure that the passing can be done safely and efficiently.

It's important to note that while passing, the vehicle must return to a safe speed after the maneuver is completed. Thus, while drivers can legally exceed the posted limit when passing, responsible driving dictates that they should do so only to the extent necessary to make the pass safely andthen return to the speed limit.