761—607.20 (321) Commercial driver’s instruction permit.
	 607.20(1) Validity.
	  a.   	 A commercial driver’s instruction permit allows the permit holder to operate a commercial motor vehicle when accompanied by a person licensed for the vehicle being operated. Examples of permissible vehicle operation include but are not limited to:
	 (1) 	 Operation of a vehicle requiring a higher class license than the license to which the permit is added.
	 (2) 	 Operation of a vehicle requiring an endorsement other than a hazardous material endorsement.
	 (3) 	 Operation of a vehicle equipped with air brakes.
	  b.   	 A commercial driver’s instruction permit is valid for six months and may be renewed once within two years from the date of issuance of the first permit.
	  c.   	 A commercial driver’s instruction permit is invalid after the expiration date of the license to which the permit is added or the expiration date of the permit whichever occurs first.
	 607.20(2) Requirements.
	  a.   	 An applicant for a commercial driver’s instruction permit must be at least 18 years of age and eligible for a commercial driver’s license.
	  b.   	 The applicant must have a valid Class A, B, C, or D license other than an instruction permit, a special instruction permit, a motorized bicycle license or a temporary restricted license.
	  c.   	 The applicant must successfully pass the general knowledge test for a commercial driver’s license.
This rule is intended to implement Iowa Code sections 321.180, 321.186 and 321.188.