As I start my formula car career after many years in a Superkart I have a safety question. Since I will now need to wear arm restraints how do you wave someone by? Or raise your hand to signal you are pitting, approaching an incident or slowing? Since you can't get your arm up over the roll bar or outside the cockpit sides what is the accepted procedure? I'm not sure how much a following driver can see by looking at your mirrors. For that matter I'm not sure how much I will be able to actually see out the mirrors :-)
Thanks for any advice.