This is incorrect. Please refer to:
https://gis.data.mass.gov/maps/5088c1b6af16420e98f1165d051d60df

Under state specific guidelines, Massachusetts has a classification standard.

MassGIS F-Class 2 = highway=trunk
MassGIS F-Class 3 = highway=primary
MassGIS F-Class 5 = highway

https://wiki.openstreetmap.org/wiki/United_States/2021_Highway_Classification_Guidance