Miss. Code Ann. § 63-16-11

(1) This chapter shall not apply to any motor vehicle that: (a) Has commercial auto coverage; (b) Is qualified for a fleet registration; (c) Is part of a self-insured corporate or individual fleet registered under Section 27-19-66 , or self-insured under Section 63-15-53 ; (d) Is included in an insurance binder that has not been entered into the system at the time the verification system is accessed; (e) Is exempted from the proof of insurance requirement under Section 63-15-4(1) ; or (f) Has a gross vehicle weight of sixteen thousand (16,000) pounds or greater. (2) For the purposes of this chapter, “ commercial auto coverage ” is defined as any coverage provided to an insured, regardless of number of vehicles or entity covered, under a commercial coverage form and rated from a commercial manual approved by the Department of Insurance. This chapter shall not apply to vehicles insured under commercial auto coverage; however, insurers of such vehicles may participate on a voluntary basis.