1. A person commits the offense of driving a commercial motor vehicle while revoked if such person operates a commercial motor vehicle when, as a result of prior violations committed operating a commercial motor vehicle, the driver’s commercial driver license is revoked, suspended, or cancelled, or the driver is disqualified from operating a commercial motor vehicle.

2. Any person convicted of driving a commercial motor vehicle while revoked is guilty of a class A misdemeanor. Any person with no prior alcohol-related enforcement contacts as defined in section 302.525, convicted a fourth or subsequent time of driving a commercial motor vehicle while revoked or a county or municipal ordinance of driving a commercial motor vehicle while suspended or revoked where the judge in such case was an attorney and the defendant was represented by or waived the right to an attorney in writing, and where the prior three driving a commercial motor vehicle while revoked offenses occurred within ten years of the date of occurrence of the present offense and where the person received and served a sentence of ten days or more on such previous offenses; and any person with a prior alcohol-related enforcement contact as defined in section 302.525, convicted a third or subsequent time of driving a commercial motor vehicle while revoked or a county or municipal ordinance of driving a commercial motor vehicle while suspended or revoked where the judge in such case was an attorney and the defendant was represented by or waived the right to an attorney in writing, and where the prior two driving a commercial motor vehicle while revoked offenses occurred within ten years of the date of occurrence of the present offense and where the person received and served a sentence of ten days or more on such previous offenses is guilty of a class E felony. No court shall suspend the imposition of sentence as to such a person nor sentence such person to pay a fine in lieu of a term of imprisonment, nor shall such person be eligible for parole or probation until he or she has served a minimum of forty-eight consecutive hours of imprisonment, unless as a condition of such parole or probation, such person performs at least ten days involving at least forty hours of community service under the supervision of the court in those jurisdictions which have a recognized program for community service. Driving a commercial motor vehicle while revoked is a class E felony on the second or subsequent conviction pursuant to section 577.010 or a fourth or subsequent conviction for any other offense.