Talk:Passing loop
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[edit] See-sawing
If both trains are too long for the loop, time-consuming "see-sawing" operations are required for the trains to cross.
It's my understanding that this passing maneuver is also called a "double saw-by." It's probably best avoided if at all possible, even if that means a train has to wait for some time at a longer passing loop. 4.243.206.245 05:31, 13 February 2007 (UTC)
