Certainly not. Responsibility is a very complex issue, especially if you devolve it to the users, rather than keeping it in the hands of the managers/operators.
But even if we assume a large part of responsibility rests in the users, then the responsibility would clearly be only held by those planning to make the trip and deciding which form of transport to use (potential users).
But even if we assume a large part of responsibility rests in the users, then the responsibility would clearly be only held by those planning to make the trip and deciding which form of transport to use (potential users).