Originally Posted by
Kevinti
People saying, "On the left" (or right) is done out of a curtesey to you...so you are both safe by knowing where everyone is.
I've stopped using this phrase as about 50% of the time, the person I am calling out too interprets it as a request to move left, which they then do and is not what I want. "Passing" seems to work better, they almost always move right.