Originally Posted by
AlanB
I have to say that I've never heard of that law and in fact Amtrak violates it all the time, if it does exist.
If I book a ticket a month or so in advance from Boston (A) to DC (D), I may be able to get a price of $81. If I wait to the last minute and book New Haven (B) to Philly(C), I could easily end up paying $91, 10 bucks more for the shorter trip.
I've never heard of that law either, but your scenario doesn't neccesarily disprove it, if the law applies to purchases made at any one point in time. In other words, it you were to buy the two tickets you described at the same time, for the same travel day, would it still be more to go from B to C than from A to D? (If that makes sense)