Absent an ADOT definition of passenger carrying vehicle. The ADOT license classification of RV vs Passenger shows there is a difference in vehicle classifications.
Other wise you would need a passenger endorsed CLD to drive a motorhome over 26K lbs. This is evident because the RV is excluded from the other three classes by definition.
I think we need to access the total of what has been gleened rather than depend on one specific piece; which does not appear to exist.
You can drive any RV with ADOT passenger endorsed CLD. You can not drive any vehicle classified to carry passengers with an ADOT RV class license.
The conclusion I draw from this is that ADOT recognizes vehicles that carry passengers is a different class of vehicles than RVs. Therefore RVs are not passenger carrying vehicles.
You can take it from there.
Dennis, I agree Arizona should have defined "passenger carrying vehicle".