Georgia CDL Combination Vehicles Test study plan

Define combination vehicle terms (tractor, trailer, kingpin, fifth wheel, glad hands, landing gear) in your own words without notes

List at least six specific risks of pulling a trailer compared with a straight truck, including off-tracking, rearward amplification, and surge

Sequence the full coupling procedure from memory in the correct order, from inspection through pull test

Identify the three most common coupling errors (high hook, low hook, missed kingpin) and state the visual or physical clue for each

Recite the full uncoupling procedure in order, including landing gear, air line disconnection, and fifth wheel release

Explain how a tractor protection valve and trailer air supply valve work together during normal operation and during a breakaway

Trace the path of air from the compressor through the tractor and trailer systems, naming each valve and line

Describe the tests for trailer air supply, trailer spring brakes, and service brakes, including what a failure looks like

Perform coupling and uncoupling on a real or simulated rig at least five times while narrating each step aloud

Execute the pull test correctly and explain what a failed pull test indicates

Demonstrate the trailer air supply and spring brake tests and state the pass criteria for each

Diagnose three given fault scenarios (no trailer brakes, constant air leak, trailer won't release) and name the likely cause for each

Build a complete pre-trip inspection checklist covering tractor, trailer, coupling, lights, tires, and brakes in a fixed walk-around order

Inspect a real or simulated combination vehicle and correctly identify at least five planted defects

State the securement requirements for cargo, including the minimum number of tiedowns and working load limits

Explain how cargo shift affects trailer stability and weight distribution on the axles

Describe how to set up and execute a right turn without hitting the curb or an adjacent vehicle, including mirror use and the swing of the trailer

Explain off-tracking and rearward amplification in plain language and predict which conditions make each worse

Calculate or estimate the extra clearance needed for a given trailer length and turn radius

Identify at least four situations where a combination vehicle should not attempt a maneuver and explain the safer alternative

Explain the correct braking technique for a combination vehicle, including controlled braking and stab braking, and when each applies

Describe how to respond to a trailer jackknife and to a trailer swing, and explain why the responses differ

State the stopping distance factors that change with a loaded versus empty trailer and with wet or icy pavement

List the conditions that require reducing speed below the posted limit and the reasoning behind each

Describe the correct backing setup for a straight-line back, a driver-side offset, and a sight-side offset

Explain the role of a spotter and what to do when no spotter is available

Identify the hazards specific to backing a long vehicle, including blind spots and trailer drift

State the parking rules for a combination vehicle, including chocking, brake setting, and grade considerations

State the required actions at a railroad crossing for a combination vehicle, including when stopping is mandatory

List the emergency equipment required to be carried and how each item is used

Complete a full timed practice test across all ten domains and review every missed question

Re-inspect your weakest two domains and rewrite the notes you would want at the test center