Originally Posted by
Freckles68
Noisemakers generally tell fellow passengers to go eff themselves when reminded they're in the Quiet Car, and continue their conversations either with their companion or on the phone.
In the case of phone yappers, who either don't hear shushing or don't care, I've found it especially effective to stand in the aisle slightly in front of them -- that is, fully in their field of vision -- and look at them. No stink eye, just "I'm looking at you with mild disappointment because you are drawing attention to yourself" gazing. We are hardwired to find overt observation unsettling (and then socially conditioned to observe social norms), so it takes an authentic sociopath not to be shamed into compliance.
For the record, if you do this & the offender gives you lip, other pax will back you up. All it takes is for someone to lead.