On which part of the route is it going every 6/7 minutes? I can't find that anywhere?
And I think it is confusing having an every 10 minute frequency between Interchange and Doxford International, but I suppose it's similar to the 21 really. The only confusion to me is the fact that passengers will have to time their departures from the city centre as every 20 minutes buses leave from Vine Place or Fawcett Street with every 20 minutes buses leaving from Holmeside or Interchange, defeating the object of having an every 10 minute service really as the idea is you 'Turn up and Go' so to speak.
Personally I think it would of been better to either:-
> Extend the 38 to Doxford International after Tunstall Bank Estate, as I really fail to see why the Stockton Road (Ryhope-Interchange need any more buses, there's loads), having a wholly 20 minute service across the route.
> Increase the frequency across the whole section for the route to every 15 or 10 Minutes.

EDIT: Also it's going to be difficult in terms of branded buses with this been Monday-Friday only. They'll either need more branded buses or use East Durham, plain yellow or ex-Washington Street Shuttle MPD's- which means branding becomes irregular something which seems quite lapse at the minute. To my calculations the PVR of the short workings is three.