If you don't want to 'dump' the startup video then do this:
1 Navigate to Steam\steamapps\common\RailWorks\data\videos
2 create a notepad file named 2013_startup.txt
3 rename 2013_startup.ogv to something like 2013_startupold.ogv
4 now rename the text file you created to 2013_startup.ogv
you will now have a 0k .ogv file that skips instead of playing.