Originally Posted by Matariki

I have given up on calling out because of the unpredictable response. Bells seem to evoke a more reliable response, but ringing way in advance allows time for the ped to hear, take a look, and then react. Once they react, you know how to pass them. Also, you really need to keep your speed down for the same reason: to not only allow the ped to react, but also for you to react to the peds reaction.