How much fuel do you have? 280 pounds is 40 gallons of fuel to burn off to be legal without the APU exemption.
I agree! I know that Rhode Island, and California are 2 that don't recognize the federal law. But you shouldn't be surprised these 2 states.
I've heard it's 1 pound burned per mile driven. (7lbs per gallon of diesel...and 7mpg on the freeway=1lb/mile burned off.