Please add an option to the train timetable entries to force a minimum wait time for a train before it departs a station.
Currently trains only wait as long as it takes to do a cargo (un)load, or not at all if there is nothing to do. There are quite a few cases where a player might want a train to only run every so often (uranium, nuclear waste) an spend most of its time on a siding somewhere.
Truck routing does include waiting period options which are very handy and they were also part of the train setup Jace showed in the vehicle devblog way back when.
The departure delay ought to be timed from the moment the train stops, but be automagically extended if it is shorter than a load cycle. Whether the load cycle happens at the beginning or end of the delay ought to be configurable, but either option would work.