I'm unclear on something is this a US dot number or a Alabama dot number. All this talk of farmers exemptions and tags and cdls are confusing me a US dot number has no exemptions for farmers. The US dot number is a number used to identify and track companies, people and their vehicles involved in intrastate and interstate commerce. Regardless if you own what you are hauling or not when you cross a state line with a vehicle with a gross weight of 10,000 lbs or more (RVs are excluded) you need a US dot number. Thats not a unique law to Alabama it is nationwide. Many bordering states have reciprocity agreements between each other that allow travel within their state without permits but you will still need the US dot number when crossing the state line. The 150 mile radius is the threshold when a drivers responsibilties change such as keeping a daily log book, requiring a commercial drivers license, hours of service. having a current medical card. Most if not all of these requirments after 150 miles are for saftey reasons your saftey as the driver and the saftey of the other motorists on the road. They are not rules put in place to make hauling your six calves in your 16 foot bumper hitch trailer difficult as some of the people on this board think. IT IS FOR SAFTEY. All of these rules can be found in the Federal Motor Carrier Saftey Administration Handbook. So they must be talking about a Alabama dot number. Has anyone actually got a number yet and if so was it a MCS-150 form that you had to fill out. That is the federal form for a US dot number. If that is the form I have no idea what Alabama is doing. Maybe just using a US dot number to make their paperwork more simple. I believe these numbers are a good thing. After stopping a less than safe vehicle the state patrol can track the vehicle with the US dot number and the next time the vehicle is stopped they can just look the number up on a computer see that the vehicle or driver has had a history of saftey violations and put the vehicle and or driver out of service.