Hi Skyper, 
The editor refrained from adding the U-turn restrictions in the edit as we were unable to find sign boards indicating U-turn restrictions at the nodes (https://www.openstreetmap.org/node/10828760928 and https://www.openstreetmap.org/node/6967044714). 
We performed the deep dive as per your recommendations to understand and add the forward/backward roles to be set on 'route=road' or PTv1 bus routes. To understand the procedure to be followed, we looked into the wiki article https://wiki.openstreetmap.org/wiki/Tag:route=bus , but the contents are not very clear.
I'd like to know if we need to set forward/backward roles in such cases given that traffic does not flow in both directions if the roads are divided into dual carriageways and are marked with one-way directionality. We would appreciate if you could share your knowledge with us and we will incorporate it in our internal sop. 
Regards,
Deepika 
