If you buy a tri axle dump truck in Illinois and are driving it back to Massachusetts under farm license plate do need CDL drive it?

According to the Illinois Secretary of State, a Commercial Driver's License (CDL) is required to operate a tri-axle dump truck in Illinois, regardless of whether it is being used for farm purposes or not. However, there are some exceptions to this rule, including if the truck is being operated by a farmer or a member of their immediate family.

It is important to note that the laws regarding the operation of commercial vehicles can vary from state to state, so it is always a good idea to check with the relevant authorities in the state where you will be operating the vehicle to make sure you are in compliance with all applicable laws and regulations.

Here are some additional resources that may be helpful:

* [Illinois Secretary of State: CDL Information](https://www.cyberdriveillinois.com/departments/drivers/licenses/commercial_drivers_license.html)

* [Federal Motor Carrier Safety Administration: CDL Requirements](https://www.fmcsa.dot.gov/regulations/commercial-drivers-license/cdl-requirements)