Truck Classification (TR): Commercial Vehicle Instruction and CDL Readiness
What the Truck classification covers
The Truck (TR) classification authorizes instruction in Michigan commercial driver training. The exam tests CDL class boundaries, instructor qualifications, behind-the-wheel training sequence, pre-trip inspection, and documentation. Truck instructors must hold a valid CDL for the class and endorsements they teach and must train only within their certification.
Core rules
- Class A covers combination vehicles with a gross vehicle weight rating (GVWR) over 26,001 pounds and a towed unit over 10,000 pounds. Class B covers single vehicles over 26,001 pounds. Class C covers vehicles designed for 16 or more passengers or hazardous materials.
- Training follows a sequence: entry-level driver training (ELDT) theory, vehicle inspection, basic control, shifting, backing, coupling/uncoupling, and road driving.
- The CDL skills test has three parts: pre-trip inspection, basic vehicle control, and road test. Instructors should teach the inspection as a fixed, verbalized sequence.
- Verify the student's commercial learner's permit (CLP) and required endorsements before any road lesson.
- Document training hours, vehicle used, and skills demonstrated; never certify hours not delivered.
Worked example
A student wants to train in a tractor-trailer with an 80,000-pound GVWR and a 45,000-pound trailer. That combination is Class A. The instructor checks that the student holds a Class A CLP, confirms ELDT theory is complete, and begins with a pre-trip inspection. If the student held only a Class B permit, the instructor could not conduct Class A road training.
Traps that cost marks
- Training a student outside the instructor's CDL class.
- Skipping pre-trip inspection or treating it as a quick walk-around.
- Confusing GVWR with actual scale weight.
- Assuming state rules replace federal CDL standards.
- Certifying road hours without a valid CLP.