I believe the hwy type should be the same as 146A, as the continuation of that road.  Trunk road is higher in hierarchy than Primary Road:  going South from 146A, this upgrade seems odd.  There are several businesses along the road from here on as well.  TBH I am very annoyed with the situation, as RIDOT has never replied to my questions concerning this section.  I agree that South of Reservoir road, 146 becomes Motorway again.  And then there is the overpass under construction, which has not yet been mapped.  Brief, I think Trunk is a level too high for this section, as a Trunk Road in general does not have traffic lights.