761—607.27 (321) Knowledge tests.
	   607.27(1) General knowledge test. The general knowledge test for a commercial driver’s license is a written test of topics such as vehicle inspection, operation, safety and control in accordance with 49 CFR Section 383.111.
	   607.27(2) Additional tests. In addition to the general knowledge test for a commercial driver’s license, an additional knowledge test is required for each of the following:
	      a.    	 Class A license for combination vehicle operation as required in 49 CFR Section 383.111.
	      b.    	 Hazardous material endorsement as required in 49 CFR Section 383.121. The knowledge test for a hazardous material endorsement shall not be administered orally or in a language other than English.
	      c.    	 Passenger vehicle endorsement as required in 49 CFR Section 383.117.
	      d.    	 Tank vehicle endorsement as required in 49 CFR Section 383.119.
	      e.    	 Double/triple trailer endorsement as required in 49 CFR Section 383.115.
	      f.    	 School bus endorsement as required in 49 CFR Section 383.123. The applicant must also qualify for a passenger vehicle endorsement.
	      g.    	 Removal of the air brake restriction as required in 49 CFR Section 383.111.
	   607.27(3) Test methods. All knowledge tests shall be administered in compliance with 49 CFR Section 383.133(b). All tests other than the hazardous material endorsement test may be administered in written form, verbally, or in automated format and can be administered in a foreign language, provided no interpreter is used in administering the test. A verbal test shall be offered only at specified locations. Information about the locations is available at any driver’s license examination station.
	   607.27(4) Waiver. A waiver of any knowledge test is permitted only as provided in Iowa Code subsection 321.188(5). The burden of proof of having passed the hazardous material endorsement test within the preceding 24 months rests with the applicant.
	   607.27(5) Requirement. An applicant must pass the applicable knowledge test(s) before taking the skills test. Passing scores for a knowledge test shall meet the standards contained in 49 CFR Section 383.135(a).
This rule is intended to implement Iowa Code sections 321.186 and 321.188 as amended by 2015 Iowa Acts, House File 635, section 53.
[ARC 2071C, IAB 8/5/15, effective 7/14/15]