Tennessee CDL Manual: Study Guide by Section

License classes, disqualifications, medical certification, and the list of knowledge tests — plus, from §1.6 onward, the Tennessee-only material: permit validity, the age exception for 18- to 20-year-olds, how Driver Service Centers schedule tests, what happens when you fail or miss one, and how the state applies the federal training rule. It is the chapter you cannot skim.

• Tennessee Driver Service Centers sit in two time zones, and the manual tells applicants to confirm which one their appointment is in. (Tennessee CDL Manual, §1.6.3)

The inspection routine, vehicle control, shifting, seeing and communicating, space and speed management, night, fog, winter and mountain driving, railroad crossings, skid recovery, emergencies and fitness to drive. Tennessee’s own study grid marks this section for every license class AND for the doubles/triples, tank, passenger and school bus endorsements — the only section it flags that broadly.

• The general knowledge test is required of every applicant before Tennessee can issue a commercial learner permit. (49 CFR 383.71(a)(2))

Inspecting a load before and during a trip, weight limits and axle balance, tie-downs, header boards and covers, and the loads that need special handling. Tennessee marks it for the license classes only, not for any endorsement — it is general-knowledge material.

The bus-specific pre-trip, boarding and alighting rules, what may not be carried aboard, brake-door interlocks, and the after-trip sweep. Tennessee requires the passenger transport test of every bus driver applicant, whatever the vehicle class.

• The passenger endorsement takes a knowledge test and a skills test in a passenger vehicle. (49 CFR 383.93(c)(2))

Compressor, governor, reservoirs, spring brakes and the dual-circuit layout; the full air-brake inspection sequence; and how to brake on a grade without fading. Tennessee’s grid footnotes this one: study Section 5 if you plan to operate vehicles equipped with air brakes — which in practice means almost every Class A and most Class B applicants.

• Skip or fail the air brake test — or test in a vehicle without air brakes — and the license carries an air-brake restriction. (49 CFR 383.95(a))

Rearward amplification and off-tracking, trailer air-brake systems, anti-lock brakes, and the coupling and uncoupling procedure you will narrate on test day. Tennessee’s grid marks it for Class A and for the doubles/triples and tank endorsements.

• An applicant who fails the combination vehicles knowledge test must not be issued a Class A permit or license. (49 CFR 383.135(a)(3))

Coupling order for a second and third trailer, converter dollies, the crack-the-whip effect, and the air-brake check specific to a multi-trailer set. Knowledge test only in Tennessee — there is no separate skills test for T.

• The doubles/triples endorsement is a knowledge test only. (49 CFR 383.93(c)(1))

Inspecting a tank, liquid surge and baffles, outage, and the high center of gravity that makes a partly filled tank so unforgiving in a curve or a panic stop. Tennessee requires it for anyone hauling liquid or gas above the federal tank thresholds.

• A tank vehicle federally means individual tanks rated over 119 gallons with 1,000 gallons or more aggregate, permanently or temporarily attached. (49 CFR 383.5)

Hazard classes, shipping papers, placarding, segregation and loading rules, driving and parking restrictions, and emergency response. Tennessee’s grid marks it for the hazmat endorsement and for tank vehicles, which is the pairing that produces the X code.

• Tennessee requires a first-time hazmat applicant to complete hazmat training from a Training Provider Registry provider before the hazmat knowledge test may be taken. (Tennessee CDL Manual, §1.6.3)
• Hazmat applicants also clear a Transportation Security Administration security threat assessment. (49 CFR 383.71(a)(8), part 1572)

Danger zones and mirror use, the loading and unloading sequence, evacuation, railroad crossings and student management. Tennessee marks this section for the school bus endorsement alone.

• The school bus endorsement requires both a knowledge test and a skills test. (49 CFR 383.93(c)(5))

Tennessee’s grid marks all three of these for Class A, B and C and for the passenger and school bus endorsements, which is the state saying plainly that the road test is the same shape whatever you drive. You take the segments in order — inspection, then basic control, then the road — and you must pass each before moving to the next.

• The skills test must be taken in a vehicle representative of the group you want to be licensed for, and a vehicle with marked or labeled components cannot be used. (49 CFR 383.91(b); Tennessee CDL Manual, §1.1.2)