Dragon Challenge

For its first decade of operation, these two coasters were dispatched at the same time.  As the trains left the loading station, strain-gauges measured each train's weight.  As they climbed up the lift hills, the speed of the chain lifts were adjusted so that each train reached the top in the correct position in relation to the other train.  This ensured that the trains would meet in three locations.  Here is the first:

©2012 by Joel A. Rogers.