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here is the peoples republic of California DMV has to say
A commercial vehicle is a motor vehicle or combination used for hire to transport passengers or property or which:
* Has a gross vehicle weight rating (GVWR) of 26,001 pounds or more
* Is designed, used, or maintained for carrying more than 10 passengers, including the driver
* Tows a vehicle or trailer, which has a GVWR of 10,001 pounds or more
* Transports hazardous materials, which requires placards
* Tows any combination of two trailers or vehicle and trailer
The or which is the killer. I have a class B cdl, I can drive any weight single vehicle and tow up to 10000k trailer.
I haven't talked to any DOT inspect since our last terminal inspection and all he did was piss and moan about how bad things at the CHP were. We kept him supplied with coffee and doughnuts sympathized with his situation. A few minor report filing issues and 2 loose bolts. We were lucky.
All you need is a buddy with a CDL and your good.