Train speeds

How do you change top speed for freight trains for freeroam for player user, not ai. Like the speedomoter reads 79mph is top speed for passenger, when it should be 55mph when i operating a freight train at track speed for example.
https://railworksamerica.com/forum/
https://railworksamerica.com/forum/viewtopic.php?f=6&t=17785
trmike999 wrote:I hope this helpsAlthough I just realized I made a mistake - High speed freight follows FREIGHT speed limits not passenger.
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This can also be used when making scenarios to prioritize AI and player trains when dealing with traffic.