How annoying can they be. The worst case was in grad school. I'm walking around campus and some bim is having a loud cell conversation, then has the audacity to ask me for a pen so she can write down an address.
Trains are for sleeping and reading.
The whole train car doesn't need to hear you making plans with your friends, solving your family problems, or conducting business deals. Where she's stuck in traffic. How fast she's going. Is the light red or green. If she gets lost, fuggedaboutit.