All traintypes?
In this territory, only Amtrak, Intermodal and Multi-level (autos) are train types allowed to travel faster than 48 mph (76, 58, 53, respectively). The other three are not allowed to go faster.
If you hover the mouse over a block, you can see the speed limit information in the status field, like "SPD = 50/70/...". Those limits are not higher than set for the types overall themselves.
Speed limits may be reduced by slow order. If that is the case, he speed limit information mentioned above will look like "SPD = *25/*25/...", and the block affected will be displayed in light blue instead of the normal white if free.
Having said that, and without any further information (as of yet), we will monitor and watch the issue to see if something unusual or unintended shows up. Of course, if you have more information, please let us know. If there is definitely something wrong, you can also save the game status and send the saved file over to us.
Your WebRailRoader
Detlef