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Trans 104.03(2)(c)(c) Commercial driver license. A person applying for a commercial driver license shall take and pass a CDL knowledge test. All CDL knowledge tests administered by the department shall meet the requirements of 49 CFR 383.110 to 383.135. The knowledge test for a “Class A” license shall include a combination vehicle test.
Trans 104.03(2)(d)(d) CDL and school bus endorsements. A person seeking a CDL or school bus endorsement shall take and pass a knowledge test related to the endorsement sought.
Trans 104.03(2)(e)(e) CDL pre-trip inspection. A person applying for a commercial driver license shall take and pass a general pre-trip inspection test.
Trans 104.03(2)(f)(f) CDL air brake restriction. A person applying for a commercial driver license that is not restricted to prohibit operation of air-brake equipped vehicles shall take and pass an air-brake knowledge test and an air-brake pre-trip inspection test.
Trans 104.03(3)(3)Passing score. Knowledge tests, except for air-brake pre-trip inspection tests, shall be scored on the basis of percent of correct responses. A score of 80% or more correct is a passing grade.
Trans 104.03 NoteNote: Air brake pre-trip inspection tests are scored under s. Trans 104.03(8)(b).
Trans 104.03(4)(4)Failed tests. A person who fails a knowledge or pre-trip inspection test may not retake the test sooner than the next day following the failed test. A person who fails a knowledge or pre-trip inspection test 5 or more times within one year may be authorized another attempt only after requesting and receiving permission from the department to do so. Permission to take more than 5 tests in a one year period may be granted if the person demonstrates that he or she has received additional instruction, or some other significant circumstance has changed since the last failed exam, which makes successful completion of the exam more likely.
Trans 104.03(5)(5)Knowledge test requirements. A knowledge test may include a highway sign test and shall determine the applicant’s knowledge of traffic laws and related matters, including knowledge of the following:
Trans 104.03(5)(a)(a) The rules of the road.
Trans 104.03(5)(b)(b) Highway signs.
Trans 104.03(5)(c)(c) Vehicle equipment requirements.
Trans 104.03(5)(d)(d) Safe driving practices.
Trans 104.03(5)(e)(e) Fuel efficient operation of motor vehicles.
Trans 104.03(5)(f)(f) The effects of alcohol or controlled substance use in connection with the operation of motor vehicles.
Trans 104.03(5)(g)(g) The need for anatomical gifts.
Trans 104.03(5)(h)(h) The need for vehicle control in the proximity of pedestrians with vision impairments.
Trans 104.03(6)(6)Highway sign tests. A highway sign test shall be administered to a person:
Trans 104.03(6)(a)(a) Applying for an original or renewal school bus endorsement.
Trans 104.03(6)(b)(b) Being re-examined to determine the person’s ability to understand the meaning of common highway signs.
Trans 104.03(7)(7)CMV pre-trip inspection tests.
Trans 104.03(7)(a)(a) A pre-trip inspection test shall be conducted prior to any commercial motor vehicle skills test on the vehicle in which the license applicant is to be tested.
Trans 104.03(7)(b)(b) The pre-trip inspection shall test the person’s ability to inspect vehicle components for road worthiness and shall include identification and inspection of:
Trans 104.03(7)(b)1.1. Fluid systems for leaks and levels.
Trans 104.03(7)(b)2.2. Any interference with clear visibility for the driver.
Trans 104.03(7)(b)3.3. Wheels, rims and tires.
Trans 104.03(7)(b)4.4. Drive train, suspension, steering and brake systems.
Trans 104.03(7)(b)5.5. Engine components and belts.
Trans 104.03(7)(b)6.6. Gauges, meters and indicators.
Trans 104.03(7)(b)8.8. Coupling systems.
Trans 104.03(7)(b)9.9. Cargo loading and securing.
Trans 104.03(7)(b)10.10. Trailer or cargo area components.
Trans 104.03(7)(b)11.11. Required safety and emergency equipment.
Trans 104.03 NoteNote: Forms MV3542, CDL Pre-trip Inspection Combination Vehicle and MV3560, CDL Pre-trip Inspection Straight Truck/Bus are used by motor vehicle examiners to conduct these tests. Copies of the forms may be obtained from an examiner and are provided to each driver as a report of the applicant’s test result.
Trans 104.03(8)(8)Air-brake pre-trip inspection.
Trans 104.03(8)(a)(a) An air-brake pre-trip inspection test shall be conducted prior to any commercial motor vehicle skills test on the vehicle in which the license applicant is to be tested if that vehicle is equipped with air brakes.
Trans 104.03(8)(b)(b) To pass an air-brake pre-trip inspection a person must successfully complete all of the following air-brake system inspections:
Trans 104.03(8)(b)1.1. Determine the motor vehicle’s brake system condition for proper adjustment and that air system connections between motor vehicles have been properly made and secured.
Trans 104.03(8)(b)2.2. Inspect the low pressure warning devices to ensure that they will activate in emergency situations.
Trans 104.03(8)(b)3.3. Ascertain, with the engine running, that the system maintains an adequate supply of compressed air.
Trans 104.03(8)(b)4.4. Determine that required minimum air pressure build up time is within acceptable limits and that required alarms and emergency devices automatically deactivate at the proper pressure level.
Trans 104.03(8)(b)5.5. Operationally test the brake system for performance.
Trans 104.03(8)(b)6.6. Locate and verbally identify the air-brake operating controls and monitoring devices.
Trans 104.03(8)(b)7.7. Ascertain whether the emergency braking system will activate properly.
Trans 104.03(8)(b)8.8. Ascertain, with a fully charged air system and the engine off, the rate at which air is lost from the system.
Trans 104.03 NoteNote: These tests are required under 49 CFR 383.135 and 383.113(c)(1).
Trans 104.03 HistoryHistory: Cr. Register, July, 1996, No. 487, eff. 8-1-96; am. (4), cr. (8) (b) 6., 7., and 8., Register, August, 2000, No. 536, eff. 9-1-00; CR 22-048: am. (5) (h) Register July 2023 No. 811, eff. 8-1-23.
Trans 104.04Trans 104.04Unauthorized assistance. An applicant who cheats or uses unauthorized assistance during any part of a knowledge test shall fail the test and may not be allowed to retake the knowledge test for 7 days. Unauthorized assistance includes assistance from another person, notes, or the use of any materials during an examination, without the prior approval of the examiner. If the infraction is observed during the course of a test, the test shall be immediately ended.
Trans 104.04 HistoryHistory: Cr. Register, July, 1996, No. 487, eff. 8-1-96.
Trans 104.05Trans 104.05Vehicle safety inspection.
Trans 104.05(1)(1)Inspection required. Prior to conducting any driving skills test or special examination, the examiner shall conduct a safety inspection of the vehicle furnished by the applicant for the test. The examiner may refuse to conduct the skills test or special examination if the test vehicle does not pass a safety inspection or the vehicle is unregistered.
Trans 104.05(2)(2)Applicant conduct. The examiner may not conduct a skills test or special examination when:
Trans 104.05(2)(a)(a) The applicant refuses to wear a safety belt during the driving skills test, unless the vehicle was manufactured prior to January 1, 1972, and has never been equipped with seat belts.
Trans 104.05(2)(b)(b) The applicant refuses to follow required safe driving practices.
Trans 104.05(2)(c)(c) The vehicle is a commercial motor vehicle and the applicant:
Trans 104.05(2)(c)1.1. Cannot produce evidence of vehicle registration; or
Trans 104.05(2)(c)2.2. Does not hold a valid instruction permit, temporary operator’s license or driver receipt that authorizes operation for the appropriate class and endorsement of vehicle.
Trans 104.05(2)(d)(d) The vehicle is not a commercial motor vehicle, is not registered, and no person has applied to renew the vehicle’s registration. It shall be conclusively presumed that no person has applied to renew the vehicle’s registration if the applicant does not have evidence of filing an application for registration and the vehicle’s registration has expired by more than 30 days.
Trans 104.05(2)(e)(e) The vehicle is a motorcycle and the applicant does not wear an approved protective helmet when required under s. 347.485 (1) (a), Stats.
Trans 104.05(2)(f)(f) The vehicle is a motorcycle and the applicant is not wearing a protective face shield, glasses or goggles, unless the windshield rises at least 15 inches above the handlebars.
Trans 104.05(2)(g)(g) The applicant appears to be impaired by alcohol or a controlled substance, disoriented, or otherwise unfit to operate a motor vehicle.
Trans 104.05(3)(3)Vehicle condition. The examiner may not conduct a skills test or special examination when the test vehicle exhibits one or more of the following conditions:
Trans 104.05(3)(a)(a) A brake light on either side of the vehicle is not functioning.
Trans 104.05(3)(b)(b) A directional signal is missing or inoperable. This does not prohibit testing in a motorcycle that was manufactured without directional signals and on which directional signals have not been installed.
Trans 104.05(3)(c)(c) The exhaust system is defective or missing.
Trans 104.05(3)(d)(d) The windshield, a front side window or the back window is defective or missing.
Trans 104.05(3)(e)(e) The driver or passenger door is inoperable.
Trans 104.05(3)(f)(f) A required inside or outside mirror is defective or missing.
Trans 104.05(3)(g)(g) The speedometer is defective, inoperable or missing. This does not prohibit testing in a specially designed vehicle that was not manufactured with a speedometer and on which a speedometer has not been installed.
Trans 104.05(3)(h)(h) The horn is defective, inoperable or missing.
Trans 104.05(3)(i)(i) The brakes, except the parking brake, are defective, inoperable or missing.
Trans 104.05(3)(j)(j) The headlamps or tail lamps are defective, inoperable or missing and are required for visibility or driving conditions during the test.
Trans 104.05(3)(k)(k) The tires are defective or excessively worn.
Trans 104.05(3)(L)(L) The windshield wipers or defroster are defective, inoperable or missing and are necessary due to weather conditions during the test.
Trans 104.05(3)(m)(m) The vehicle lacks a permanently attached front seat for the examiner.
Trans 104.05(3)(n)(n) The safety belts in a motor vehicle manufactured on or after January 1, 1972, are missing, inoperable, defective or extremely dirty.
Trans 104.05(3)(o)(o) The vehicle is a moped or motor bicycle that does not meet the requirements specified in ss. 347.488 and 347.489, Stats.  
Trans 104.05(4)(4)In addition to the conditions specified in subs. (2) and (3), an examiner may not conduct a commercial driver license skills test or special examination when the test vehicle exhibits one or more of the following conditions:
Trans 104.05(4)(a)(a) Four-way hazard warning lamps are defective, inoperable or missing.
Trans 104.05(4)(b)(b) Passenger side access pegs or ladder are defective, inoperable or missing.
Trans 104.05(4)(c)(c) A right or left outside mirror is missing, obstructed, inoperable or defective.
Trans 104.05(4)(d)(d) The parking brake is defective, inoperable or missing.
Trans 104.05(5)(5)In addition to the conditions under subs. (2) and (3), the examiner may not conduct a skills test or special examination for a Type 1 motorcycle when the motorcycle exhibits one or more of the following conditions:
Trans 104.05(5)(a)(a) The handlebars are defective, repaired or improvised, or rise more than 30 inches above the lowest part of the top of the seat when occupied.
Trans 104.05(5)(b)(b) The motorcycle has a missing or inoperable headlamp.
Trans 104.05(5)(c)(c) There is no adequate seat for the operator.
Trans 104.05(5)(d)(d) The footpegs or footrest for the operator are missing.
Trans 104.05 HistoryHistory: Cr. Register, July, 1996, No. 487, eff. 8-1-96.
Trans 104.055Trans 104.055Graduated driver license requirements and waivers.
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.