(14 Dec 2019, 10:48 am)Andreos1 wrote  

Possibly, although that would mean one of Shiney Row and Herrington Burn would be missed out if the rule was followed to the letter.
Whilst quieter stops like Phili Depot may be served. 
No as it would only be done between Houghton and Easington with passengers able to use the 35/55/168 as suitable alternatives...