Board Thread:TrainStation Information/@comment-159.45.129.10-20151119221556/@comment-71.210.15.101-20151121032813

It's hard to see what the effects off XP wagons, but here's a suggestion. Hold back one of your bigger locos and send the rest. Then, when you are ready to send it, the destination window will show you the cargo and XP you'll receive. Edit the train and attach your XP car and check again. The longer the run, the more XP.

There is an achievement that requires collecting increasing XP from a single run. I used the Royal train to complete this. As I recall, it requires 1800 XP (from a single run) for last achievement, so I loaded the Royal train with the biggest XP, and sent it for a weekly run.

Its a judgement call, which adds interest to the game. Extra XP advances the game quicker, but so does running additional locos, and completing achievements, contracts, etc.