Load trains in the order they arrive.
2.0.1 alpha 49 or later
Configuration file: fifoloading on|off
Command line: -YF
This switch enables fifo (first-in first-out) loading of trains that have the "full load" option set. It prevents other trains from being loaded until the first train to enter the station is full, and then trains are loaded in the order that they arrived in.
Some glitches may occur when you force a train to leave the station manually. In that case, no other trains will start loading. To fix this problem, use Cht: ResetFifo
As of revision 1100 (2.6 alpha 0), fifo loading works for all vehicle types, not just trains, and will permit simultaneous loading of multiple consists, if enough cargo is present.
This feature was originally contributed by Marijn Kruisselbrink. The 2.6 alpha improvements were added by Dale McCoy.