“Exact change only.” “Carry proof of fare with you at all times.” “No food or beverage.” “No playing music aloud.” “Take off your backpack and put it between your legs so we can cram more people onto your transit vehicle.”
Some of these rules are for the convenience of other passengers, but most of them are for the convenience of the transit agencies themselves. Take, for example, the request–which could easily become a rule–to passengers to not wear backpacks while on board a transit vehicle.
You might think that this was for the convenience of other customers so more people can fit on board. But if the vehicles so crowded, why isn’t the agency running them at greater frequencies so they don’t get so full? In the case of the light-rail car pictured in the story at the above link, the answer may be that the agency picked a high-cost but low-capacity form of transit and now is stuck with that choice.