"Mobile Machinery" or "self-propelled construction equipment":
Are those vehicles, self-propelled or otherwise, which are not designed primarily for the transportation of persons or cargo over the public highways, and those motor vehicles which may have originally been designed for the transportation of persons or cargo over the public highways, and those motor vehicles which may have originally been designed for the transportation of persons or cargo but which have been redesigned or modified by the mounting thereon of special equipment or machinery, and which may be only incidentally operated or moved over the public highways. This definition includes but is not limited to wheeled vehicles commonly used in the construction, maintenance and repair of roadways, the drilling of wells, and the digging of ditches.

"Mounted equipment" means any item of tangible personal property weighing more than five hundred (500) pounds which is rigidly mounted on or attached to a vehicle subsequent to its manufacture and which, when so mounted on or attached to a vehicle, becomes an integral part thereof essential to the operation of such vehicle in carrying out and accomplishing the purpose for which vehicle is being used.

Special Mobile Machinery (SMM) or Special Mounted Equipment (SME) MUST be registered if it weighs 500 pounds or more and has it's own power source. The fine for unregistered machinery / equipment is $500.00 or double the ownership tax, whichever is greater.

For more information call, (719) 520-6240 or
http://www.co.el-paso.co.us/clerkrcd/mvdmain.asp

If you wish to register your SMM, please visit this web site for more information National Equipment Register web site

There are many additional safety regulations that must be complied with, such as tires, suspension, steering etc. All motor carriers should obtain a copy of the Federal Motor Carrier Safety Regulations (FMCSR) to refer to, for all the safety regulations.