Originally Posted by
Kapusta
No difference in performance OR safety.
You brain learns either one (left OR right). By the time someone has gotten to the point in their riding that they are even thinking about this whole subject, they have already learned one way or the other. These are not "cat-like reflexes". It's just whatever you learn.
Just because one hand is dominant, does not mean it is innately more coordinated.
What IS a real safety issue is riding any bike other than your own when you are used to to a braking setup different than nearly every other bike out there.
You don't seem to understand.
One typically signals with their left hand, which naturally leaves the right for braking.
The rear brake is more forgiving of over braking, as such it gives one a greater margin of error when braking under challenging conditions.
It has nothing to do with what one is used to or what side the lever is on, it's just the natural dynamics of a bicycles brakes.
Therefore it makes sense to have the rear brake on the side one is likely to be using when braking with only one hand on the bars.