I pull up and have been pulled up on by other riders...most will change lanes if they want to pass. Now with people I do know...things are different, but were use to riding with each other and do ride next to each other. We also ride past each other in the same lane and what not, but only if you feel comfortable, if at any time you speed up or slow down upon some one coming up, they immediately stop AND we do not do it through traffic. Things are different with people you do not know...and if an unknown rider ever takes the lead while being in the same lane, then I let them take the lead...my friends and I switch leaders all the time and in the same lane but that's just a friends messing around...once again...we DON'T do it while others (cagers or unknown riders( are around..only one person did STUPID things while I was riding...an unknown rider did a stoppie right NEXT to me, I just slowed down, switched lanes and let him be