For the DOT rules I know at work we dont have to placard unless its over a certain weight, and its alot I think around 500lbs. I know we are "supposed" to carry paper documentation with us, that is in arms reach so if you decide to flip your vehicle or catch it on fire you can grab it and show the fire man trying to put out the blaze what to be aware of.


I will ask the Dangerous Goods specialist at work what the exact rules are and get back to you guys.