cirdan
Engineer
- Joined
- Mar 30, 2011
- Messages
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Apparently experience from France shows that in situiations where train and plane are about equivalent in terms of door to door speeds, people still prefer the train, with more people using trains athan planes.3) The additional overhead associated with stopping at a hub enroute is two hours. I just made this up as well, based loosely on the many hundreds of hours I have spent in DFW and other airports over the decades.
Under these assumptions, obviously taking the train will be quicker for short trips and flying will be quicker for long ones, with a "crossover distance" at which the times are equal, with the crossover distance varying with train speed and number of airplane stops. We can make a little table of the results (I hope the formatting works!):
Crossover distance (flying is quicker if the distance is longer than this)
Number of stops enroute by air 0 (nonstop) 1 (stop at hub)
--------------------------------------------------------------------------------------------------------------
Train average speed 77 mph 240 miles 430 miles (77 mph is the average speed of an Acela between NYP and WAS)
100 333 600
150 600 1000
So, sure, 500 miles is about the right cut off with the caveats mentioned above. If we could build true high speed rail in the US, though, or if we were connecting non-hub cities with few or no nonstop flight connections, a longer distance might be time-competitive with flying. Memphis-San Antonio (625 miles by air, 727 by road), to pick a pair of random non-hub cities: 11 hours driving time, 8 hours flying (according to my assumptions above), but would only take six or so hours by 100 mph high speed rail.
So given higher speeds and non-hub cities, the threshold where air takes over might be significantly higher.
Ainamkartma
And even in cases where the train is actually slower than the plane, there is a tolerance band where the train still leads the market. It's only when flyng can save you three hours or more that the market share of trains falls off rapidly.
I think this is down to such factors as perceived comfort, more generous carry-on allowances, no harrasment by security etc.
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