Answer
Yes, they are. If they are not in your instance of Tyre, maybe you have disabled that particular option.
1. To enable draggable route lines, select ‘Preferences’ from the ‘Tools’ menu. The ‘Preferences’ window will appear. From that window, select the ‘Google Maps – Route’ tab, and check the option that says ‘Use draggable route lines’.
2. If you have disabled the option, things work a little bit different:
– Click the route line somewhere.
– A new waypoint will be inserted on that location.
– Drag that new waypoint to the location where you want it.
– The route line will be adapted accordingly.