Aug 28, 2015 - 02:55 AM
Here's a suggestion (or two) that might get you going again.
1. Hover your mouse on the base of the signal that is blocking your path to see why the blocking condition has been invoked. Look at the next one as well...
2. Go to Map View (M key) and zoom in to look at the condition of the switches and signals immediately ahead of your locomotive. Sometimes you can click on them to change their direction there. Look for other trains in your block or close by that may be inhibitting your progress.