NC CDL General Knowledge study plan
NC CDL General Knowledge · Give each week a clear focus.
8 weeks · About 7 hours per week
Transporting Passengers and Air Brakes & Hazardous Materials and Cargo
Map Domain 12 into its two halves - passenger transport rules and air brake system components - and write a labeled diagram of the air brake system from memory, including compressor, governor, reservoirs, foot valve, slack adjusters, and spring brakes
List the passenger-carrying prohibitions and responsibilities (standing passengers, loading and unloading, railroad crossings, forbidden items, driver distraction) and state the rule for each in one sentence
Explain the air brake pre-trip test sequence in order - static leak test, applied leak test, low-air warning, and spring brake pop-out - with the pressure values and timing that trigger each result
Define the hazmat classes and the shipping paper, placarding, and emergency response information requirements that apply to each
Solve five cargo securement scenarios by choosing the correct tie-down count and working load limit for the load described
Your checkpoint
A one-page air brake cheat sheet with the four test steps, their pass/fail numbers, and the hazmat placard thresholds, scored at 90% or better on a 20-question self-quiz over Domains 11 and 12
Transporting Passengers and Air Brakes & Hazardous Materials and Cargo
Recite the bus-specific inspection items that differ from a truck inspection, including emergency exits, fire extinguisher, and passenger seating
Describe how brake fade, compounding, and improper adjustment change stopping distance, and identify the adjustment limit for pushrod travel
Interpret a shipping paper line by line and match each entry to the placard that must appear on the vehicle
Explain loading and unloading safety for passengers, including the use of the brake interlock and the walk-through after each stop
Answer 25 mixed practice questions on Domains 11 and 12 and log every miss with the reason it was missed
Your checkpoint
A written log of at least 25 practice questions from Domains 11 and 12 with a corrected explanation for every wrong answer, plus a repeat attempt at 85% or better
Vehicle Inspection & Basic Control of Your Vehicle
Perform the full pre-trip inspection sequence aloud in the correct order - engine compartment, walk-around, brake check, in-cab - without notes
Identify the parts checked in each inspection zone and state the defect that would put the vehicle out of service
Explain the seven-step check for a hydraulic brake failure and the equivalent air brake check
Describe proper starting, backing, and turning technique, including the off-tracking path of the rear wheels in a right turn
Demonstrate the pivot-point method for a 90-degree alley dock and describe where the trailer wheels track
Your checkpoint
A recorded or live run-through of the complete pre-trip inspection under 15 minutes with no missed zone, plus a written summary of five basic control errors that cause crashes
Shifting Gears & Space Management
Explain when to downshift before a downgrade and why shifting while descending is unsafe
Describe the progression through the gears for a loaded vehicle on a grade and the rpm range to target for each upshift
Define following distance for a 55 mph tractor-trailer in ideal conditions and adjust it for rain, night, and heavy traffic
Compute the space needed to stop a 60-foot vehicle at 50 mph and compare it to the space needed to pass
Identify the blind spots around a commercial vehicle and explain how to check them before a lane change
Your checkpoint
A one-page space management worksheet with following distances at 30, 45, and 55 mph in three conditions and the corresponding gap in seconds, plus a passing-distance calculation for a 65-foot combination at 55 mph
Seeing and Communicating & Controlling Speed
List the communication devices on a commercial vehicle and state the situation in which each is required or recommended
Explain how to signal a lane change, a turn, and a stop in traffic and at a railroad crossing
State the speed limits that apply to commercial vehicles in work zones, school zones, and on downgrades
Describe how to adjust speed for curves, and identify the posted advisory speed as the maximum safe speed for a loaded rig
Explain the relationship between speed and stopping distance and apply it to a road hazard scenario
Your checkpoint
A table of ten driving scenarios with the correct speed choice, following distance, and signal or communication action for each, checked against the state CDL manual
Hazardous Conditions & Emergency Maneuvers
Describe the correct response to a tire blowout, a brake failure, and a steering failure, in that order of likelihood
Explain hydroplaning and state the speed at which it begins for a typical commercial tire
Describe winter driving preparation and the chain-up decision point
Explain what to do when the vehicle catches fire, including which extinguisher to use and when to abandon the vehicle
Describe the escape ramp procedure and when to use it
Your checkpoint
A flash-card set of 20 emergency scenarios with the correct first action, second action, and what not to do, self-tested to 90% recall
Mountain Driving & Night Driving
Explain the rule for choosing a safe speed on a long downgrade and the role of the engine brake or retarder
Describe the correct gear selection before descending and why the brakes should not be used continuously
List the night driving adjustments to speed, following distance, and headlight use
Explain how to handle glare from oncoming headlights and how to recognize fatigue before it becomes dangerous
Describe the mountain driving hazards of steep grades, escape ramps, and runaway truck signs
Your checkpoint
A written downgrade plan for a 6% grade two miles long with a 40,000-pound load, including starting gear, target speed, brake application rhythm, and the trigger point for using an escape ramp
Vehicle Inspection & Basic Control of Your Vehicle & Seeing and Communicating & Controlling Speed & Space Management & Hazardous Conditions & Emergency Maneuvers & Mountain Driving & Night Driving & Hazardous Materials and Cargo & Transporting Passengers and Air Brakes
Complete three full-length timed practice exams and record the score for each domain
Re-study only the two lowest-scoring domains from the practice exams
Re-run the pre-trip inspection aloud and the air brake test sequence from memory
Review the shipping paper and placard rules one final time
Confirm test-day logistics: appointment, required documents, and what to bring
Your checkpoint
Three timed practice exam scores of 85% or better, with a written list of the remaining weak areas and the specific manual pages to review before test day
Milestones
Week 2: Score 85% or better on a 25-question quiz covering Domains 11 and 12, including at least 90% on the air brake test-sequence items
Week 4: Complete the full pre-trip inspection aloud under 15 minutes with no missed zone, and correctly compute following distances at three speeds and three conditions
Week 6: Recall the correct first action for 18 of 20 emergency scenarios, and score 80% or better on a mixed quiz over Domains 1 through 8
Week 8: Three timed full-length practice exams at 85% or better, with no domain below 80% on the final attempt