While checking a straight truck, you find that the two tires in one dual-wheel pair are touching. Their tread still looks deep. How should you treat the contact?
Correct answer: As a tire condition that needs correction before the truck is used
Dual tires must not rub each other or other vehicle parts. Adequate-looking tread does not make tire-to-tire contact safe. Have the cause assessed and corrected rather than guessing an inflation or spacing adjustment.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical25, printed2-1; 2.1.3 What to Look For - Tire Problems; also physical30, printed2-6, Right Rear. ↗
Fresh rust trails appear around several wheel nuts during a parked truck inspection. What is the appropriate interpretation?
Correct answer: They may indicate looseness and call for a proper wheel-fastener check
Rust around wheel nuts can be a clue to loose fasteners. It is a reason for a proper check, not proof of the exact cause or permission to keep operating until a nut falls off. Follow the applicable wheel-service procedure; no torque recipe is given here.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical26, printed2-2; 2.1.3 What to Look For - Wheel and Rim Problems. ↗
A truck's brake friction material has plenty of thickness left, but oil is visible on its working surface. Which conclusion is sound?
Correct answer: The contamination is a defect even though the material is not worn thin
Oil, grease or brake fluid on brake shoes or pads is a defect separate from lining thickness. The source lists contamination and excessive wear as different problems. Arrange correction rather than attempting to burn the oil away through driving.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical26, printed2-2; 2.1.3 What to Look For - Bad Brake Drums or Shoes. ↗
A leaf-spring hanger on a truck is visibly broken, but the truck is still standing. Why is this more than a ride-comfort issue?
Correct answer: The damaged suspension can allow the axle to move out of position
Suspension parts support the vehicle and keep its axles properly located. A broken hanger can compromise that positioning even if the parked truck has not visibly collapsed. The question does not use the manual's numerical out-of-service example.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical26, printed2-2; 2.1.3 Suspension System Defects; Figure2.2 Key Suspension Parts, with continuation physical27/printed2-3. ↗
At the end of a trip, a driver is completing the carrier's vehicle-condition report. A new mechanical symptom did not stop the truck, but could lead to a breakdown. What belongs in the report?
Correct answer: The symptom, so it can be assessed and addressed before further operation
Report conditions affecting safety or potentially leading to mechanical breakdown. A useful defect report need not wait for a complete failure or a confirmed diagnosis. The scenario already provides a report; it does not assert that every carrier must file a no-defect report every day.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical31, printed2-7; 2.1.7 After-trip Inspection and Report. ↗
Before departure, a driver notices a loose metal flashlight and a bottle on the cab floor near the pedals. Why should they be put in a secure location?
Correct answer: They could interfere with controls or strike an occupant during a sudden event
Loose cab articles can interfere with operation of controls or become striking objects in a crash. Secure them before moving. This concerns the driver's working space, not freight tiedown or cargo-weight rules.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical31, printed2-7; 2.1.5 Seven-step Inspection Method - Get In Vehicle, secure loose articles. ↗
A tall straight truck must back into an unfamiliar service entrance. The pavement immediately behind it looks clear in the mirrors, but a canopy is overhead. What should happen before backing?
Correct answer: Get out safely and inspect the complete path, including overhead and side clearance
A backing-path check includes the sides and overhead area, not only objects at tire level. Inspect the actual path before starting and stop to recheck whenever uncertain. Another vehicle's successful entry does not establish clearance for this truck.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical32, printed2-8; 2.2.4 Backing Safely - Look at Your Path; also2.7.4 physical41/printed2-17. ↗
A driver and a helper who have never worked together are preparing a backing maneuver. The helper is in a safe position visible to the driver. What should they settle before the truck moves?
Correct answer: A mutually understood set of signals, including an unmistakable stop signal
Driver and helper should agree on signals before backing, especially the signal to stop. Visibility of the helper does not ensure that an unfamiliar gesture will be understood. This is workplace backing safety, not a practical-test scoring rule.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical33, printed2-9; 2.2.4 Backing Safely - Use a Helper, continued from physical32/printed2-8. ↗
A qualified driver is assigned a truck with an auxiliary transmission different from the one previously used. What is the right preparation?
Correct answer: Learn this truck's shift pattern and operating instructions before using it
Auxiliary transmissions and multi-speed axles can have different shift patterns. Learn the system on the actual vehicle. The manual's example does not make a particular control layout or double-clutch sequence universal.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical33, printed2-9; 2.3.2 Multi-speed Rear Axles and Auxiliary Transmissions. ↗
A truck has a driver-controlled retarder that applies retarding force to its drive wheels. The route ahead is icy. What does the manual advise about this retarder?
Correct answer: Turn it off because its drive-wheel braking can cause a skid
On the stipulated driver-controlled drive-wheel retarder, retarding force can exceed available grip on ice. The manual advises turning it off on slippery roads. This is not an instruction to defeat ABS or another automatic safety system.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical34, printed2-10; 2.3.4 Retarders, continuation from physical33/printed2-9; Caution. ↗
While regularly checking a truck's mirrors, the driver sees a car approaching alongside. It then disappears from the mirror view without being seen ahead. What should the driver consider?
Correct answer: The car may now occupy a blind area beside the truck
Regular mirror checks help track vehicles that move into areas the mirrors cannot show. Do not treat disappearance from the view as proof of a clear lane. Maintain awareness and verify space before any lateral maneuver.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical34, printed2-10; 2.4.2 Seeing to the Sides and Rear - Traffic, blind spots. ↗
A driver wants to watch a vehicle behind the truck and keeps staring into one mirror. What is the safer observation pattern while continuing along the road?
Correct answer: Use brief mirror checks and return attention to the roadway ahead
A long mirror fixation allows the truck to travel without current information about the road ahead. Make quick checks and keep shifting attention between surrounding traffic and the forward scene.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical35, printed2-11; 2.4.2 Seeing to the Sides and Rear - How to Use Mirrors. ↗
A following motorist asks a truck driver for a hand signal saying the oncoming lane is clear enough to pass. What should the truck driver do?
Correct answer: Avoid giving an all-clear signal that directs the motorist to pass
Do not direct another driver to pass. That driver must judge whether the complete maneuver is safe and lawful. An all-clear gesture can be misunderstood or relied upon after conditions change; ordinary courtesy is not a guarantee of a safe gap.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical36, printed2-12; 2.5.1 Signal Your Intentions - Don't Direct Traffic. ↗
A straight truck must slow substantially for a tight entrance ahead. A car follows at a reasonable distance. How should the truck driver prepare that driver for the speed change?
Correct answer: Give early warning and slow gradually before the tight turn
Car drivers may not anticipate the low speed needed for a large vehicle's tight turn. Early signaling and gradual slowing give them time to respond. This is planned communication, not deliberate brake-checking or a prescribed brake-pumping technique.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical36, printed2-12; 2.5.1 Signal Your Intentions - Tight Turns; preceding signal guidance physical35/printed2-11. ↗
A driver calculates only the distance a truck travels after the brakes begin slowing it. What has been left out when estimating the complete stop from first seeing a hazard?
Correct answer: The distance traveled while recognizing the hazard and reacting to it
Total stopping distance includes travel during perception and reaction as well as the braking phase. The truck continues moving before braking takes effect. No fixed reaction time, stopping-footage guarantee or air-brake-lag calculation is prescribed.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical38, printed2-14; 2.6.1 Stopping Distance, with physical37/printed2-13 definitions; Figure2.11. ↗
A tall straight truck approaches a curve whose posted speed appears comfortable for nearby cars. What should govern the truck driver's entry speed?
Correct answer: Choose a safe speed for this truck and conditions, which may be below the posted value
A high-center-of-gravity truck can roll even while its tires retain traction. A posted value does not guarantee stability for every commercial vehicle. Select a suitable speed before entering, and never treat the sign as a required minimum.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical39, printed2-15; 2.6.3 Speed and Curves; also2.8.2 Off Ramps/On Ramps physical43/printed2-19. ↗
A truck driver reduces speed at the start of a long work zone. Several minutes later the road still looks open, but construction restrictions remain in effect. What helps prevent an unintended increase in speed?
Correct answer: Keep checking the speedometer and the changing work-zone conditions
The manual specifically warns that speed can creep upward during a long construction section. Monitor speed and remain within current restrictions, reducing further when conditions require. A temporary lack of visible workers does not end the work zone.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical39, printed2-15; 2.6.7 Roadway Work Zones. ↗
Cars in heavy traffic are traveling faster than the speed that is lawful and safe for the truck and conditions. How should the driver interpret advice to travel with traffic flow?
Correct answer: Match flow only when doing so remains lawful and safe, while preserving following space
The manual qualifies traffic-flow advice: it applies only when the resulting speed is not illegal or unsafe. Do not let surrounding traffic dictate a speed unsuitable for the truck, the road or the conditions.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical39, printed2-15; 2.6.5 Speed and Traffic Flow, including its lawful/safe-speed qualification. ↗
On a straight, unobstructed lane, a wide truck has little spare width. Which ordinary lane position best preserves clearance on both sides?
Correct answer: Keep the truck centered in its lane while monitoring the available clearance
Keeping a wide commercial vehicle centered preserves what clearance is available on both sides. The scenario supplies a normal unobstructed lane; it is not a rule to ignore obstacles, traffic control or a special maneuver.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical41, printed2-17; 2.7.3 Space to the Sides - Staying Centered in a Lane. ↗
A tall truck cleared a particular underpass last year. The road beneath it has since been resurfaced, and the driver is unsure about today's clearance. What is the sound conclusion?
Correct answer: The usable clearance may have decreased; verify a safe route rather than assume the truck fits
Added pavement or accumulated material can reduce overhead clearance. Previous passage and an old posted height are not guarantees. If safe clearance cannot be established, use another suitable route rather than testing the opening with the vehicle.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical41, printed2-17; 2.7.4 Space Overhead. ↗
A long straight truck approaches a deep drainage dip in an unpaved yard. The sides and overhead path are clear. What additional clearance must the driver assess?
Correct answer: Whether the underside or ends of the truck could strike or hang up in the dip
Space beneath a commercial vehicle can be small, especially under load. Drainage depressions can make vehicle ends drag or cause a hang-up. Side and overhead clearance do not establish adequate ground clearance; do not use speed to test it.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical41, printed2-17; 2.7.5 Space Below. ↗
A straight-truck driver plans to swing left before beginning a tight right turn. What particular conflict can that early swing create?
Correct answer: A following driver may think the truck is turning left and enter the space on its right
An early swing to the left can mislead a following driver into passing on the right, where the truck will turn. Plan the maneuver to avoid creating that gap and conflict. This question identifies the hazard; it does not authorize entering another lane regardless of traffic.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical42, printed2-18; 2.7.6 Space for Turns - Right Turns; Figure2.13. ↗
A straight-truck driver is deciding whether a gap permits crossing an intersection. The front bumper could reach the far side before an approaching car arrives. What else is essential?
Correct answer: Enough time and space for the entire truck to clear the conflicting path
A large vehicle needs room for its full length and may accelerate slowly. Before starting across, make sure it can get completely through before conflicting traffic reaches it. Cab clearance alone is not sufficient.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical42, printed2-18; 2.7.7 Space Needed to Cross or Enter Traffic. ↗
From a safe distance, a truck driver sees a cardboard box lying in the travel lane. What assumption should be avoided?
Correct answer: Its light outer material proves that driving over it cannot damage the truck
A box or sack may contain solid or heavy material capable of damaging tires, rims or other parts. Recognize the potential hazard early enough to plan a safe response; do not assume the package is harmless or make an unchecked swerve.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical43, printed2-19; 2.8.2 Hazardous Roads - Foreign Objects. ↗
A delivery worker beside a parked van is carrying packages that block the worker's view toward traffic. What should an approaching truck driver anticipate?
Correct answer: The worker may step into the road without seeing the truck
Packages and vehicle doors can obstruct a delivery worker's view. Be prepared for an unexpected step or movement into the lane. A large vehicle can still go unnoticed by a person whose sightline is blocked.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical43, printed2-19; 2.8.3 Drivers Who Are Hazards - Delivery Trucks Can Present a Hazard. ↗
A bicyclist ahead repeatedly checks over a shoulder, although no turn signal is visible. How should a commercial driver use that observation?
Correct answer: Treat it as a possible clue to a turn or lane movement and allow room
Head and body movements can indicate that a rider is considering a turn or lane change. They are clues, not guarantees of a particular path. Preserve space and remain prepared instead of waiting for a formal signal before noticing the risk.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical44, printed2-20; 2.8.3 Drivers Who Are Hazards - Driver Body Movement as a Clue. ↗
A driver of a CMV subject to the federal hand-held-phone rule is stopped at a red light on the highway. There is no emergency, and the driver wants to hold a phone for a routine voice call. Does that pause remove the restriction?
Correct answer: No; being temporarily stopped for traffic still counts as driving under the rule
For 49 CFR 392.82, driving includes temporary traffic and signal stops. It differs from moving off or to the side of the highway and halting where the vehicle can safely remain. The emergency-services exception is not involved in this routine-call scenario.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical46, printed2-22; 2.9.4 Cell/Mobile Phones; current49CFR392.82(a)-(c) supplies the temporary-traffic-stop definition and emergency exception, observed2026-09-13. ↗
A truck's windshield seemed clear enough at midday, but dirt on it scatters headlights into glare at night. What is the appropriate preparation before further night driving?
Correct answer: Clean the windshield on both sides and keep the mirrors clean
Dirt on glass can produce glare when struck by bright light. Clean both the inside and outside of the windshield, along with the mirrors. A pane that seemed acceptable in flat daylight may still reduce visibility at night.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical50, printed2-26; 2.11.4 Vehicle Factors - Windshield and Mirrors. ↗
An angry motorist tries to provoke a truck driver into speeding up to prevent a pass. A safe opportunity exists to let the motorist go ahead. What is the better response?
Correct answer: Maintain safe control, avoid the challenge and let the motorist move away
Do not challenge an aggressive driver by accelerating or competing for position. Avoid retaliation and create separation when safe. The scenario does not call for a sudden lane change or stopping to confront the motorist.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical48, printed2-24; 2.10.3 What You Should Do When Confronted by an Aggressive Driver. ↗
A drowsy truck driver has reached a safe rest area. Opening the window briefly made the driver feel more awake. What should guide the decision about continuing?
Correct answer: A window or loud radio can mask tiredness without curing it; rest before resuming safely
Do not treat a short-lived feeling of alertness as recovery from fatigue. FMCSA specifically rejects window and radio tricks as effective cures. At the safe stopping place provided here, get adequate rest and do not resume while unsafe; no fixed nap duration or hours-of-service rule is prescribed.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical50, printed2-26; 2.11.2 Driver Factors - Maintaining alertness while driving, continuing physical49/printed2-25; qualified by current FMCSA Driver Fatigue tips1/6 and49CFR392.3. ↗
In fog that is still light enough for safe travel at a reduced speed, a truck driver sees two taillights ahead and assumes they trace the lane. Why is that assumption unsafe?
Correct answer: The lights could belong to a vehicle stopped off the roadway
A vehicle visible through fog may be on the roadside rather than in the travel lane. Do not blindly follow its lights. Use a safe speed for actual visibility, and discontinue travel at a safe location if conditions no longer permit safe operation.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical51, printed2-27; 2.12 Driving in Fog - roadside vehicle lights; current49CFR392.14 supplies hazardous-condition operation limits and passenger-safety qualification. ↗
The truck's windows are clear after a freezing night, but ice remains on the handholds and access steps. What remains to be done before normal use?
Correct answer: Remove the ice and snow from the steps and handholds
Winter preparation includes safe access surfaces, not only clear windows. Remove ice and snow from steps, handholds and deck plates to reduce slipping. This is not an instruction to climb on unsuitable parts or use makeshift loose coverings.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical52, printed2-28; 2.13.1 Vehicle Checks - Hand Holds, Steps, and Deck Plates. ↗
A truck's tires were properly set to the specified cold pressure before departure. At a routine safe stop after driving in heat, a normal temperature-related rise is measured, with no failure symptoms. Should air be released simply to restore the earlier cold reading?
Correct answer: No; releasing air while hot can leave the tires underinflated after they cool
Tire pressure rises with temperature. Do not bleed off that normal increase to imitate the cold reading; pressure will fall as the tire cools. Follow the specified cold-pressure guidance and separately investigate abnormal heat, damage or other warning signs.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical53, printed2-29; 2.14.1 Vehicle Checks - Tires. ↗
During very hot weather, shiny patches of tar have risen to the road surface ahead of a truck. What should the driver recognize?
Correct answer: The tar patches may be slippery even though no rain has fallen
Tar that rises or bleeds to the surface in hot weather can be slippery. Dry weather alone does not establish good traction. Recognize the surface change early and adjust smoothly to the actual conditions.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical53, printed2-29; 2.14.2 Driving - Watch for Bleeding Tar. ↗
A truck driver approaching a railroad crossing has not heard a train horn. Which conclusion is justified?
Correct answer: The driver must still look and assess the tracks; a train may not be audible
A train may not sound its horn at some crossings, and cab noise can mask a horn. Silence is not permission to cross. Continue the required visual checks and obey the crossing controls and any applicable stopping duty.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical55, printed2-31; 2.15.3 Driving Procedures - Don't Expect to Hear a Train. ↗
A manual-transmission straight truck has satisfied all applicable stopping requirements, and the railroad crossing is safe and clear for its full length. What gear plan follows the manual's crossing guidance?
Correct answer: Select a suitable gear before entry and avoid shifting while crossing
Plan the crossing so the truck can complete it without a gear change on the tracks. This avoids risking a missed shift or interrupted movement in the crossing. The question assumes a safe, clear crossing and does not relax any mandatory stop or clearance requirement.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical55, printed2-31; 2.15.5 Crossing the Tracks - Do not shift gears while crossing railroad tracks. ↗
A driver knows which gear a particular truck used to climb a hill. Is that alone a reliable way to choose its gear for the descent?
Correct answer: No; the correct descent gear depends on the actual vehicle and conditions and may be lower
The manual explains why a truck's climbing gear is not a universal descent rule: engine power, drivetrain losses and vehicle design affect the comparison. Learn the appropriate gearing for the actual truck and descent before starting down; do not coast in neutral or force a high-speed shift.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical56, printed2-32; 2.16.2 Select the Right Gear before Starting Down the Grade, old/new truck comparison. ↗
A truck has lost effective braking on a steep descent. A clearly marked truck escape ramp is available on the route ahead. What should the driver prioritize?
Correct answer: Use the available escape ramp instead of continuing toward worsening danger
An escape ramp is intended to arrest a runaway vehicle. The manual advises using an available ramp after downhill brake failure rather than passing it and allowing speed and risk to increase. No brake-actuator recovery or unverified ramp-design instruction is given.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical58, printed2-34; 2.17.3 Brake Failure - Brake Failure on Downgrades; also escape-ramp planning physical57/printed2-33. ↗
A straight truck's yellow ABS malfunction lamp completed its normal startup check, then comes on and remains lit while the truck is underway. What does that indicate?
Correct answer: An ABS fault may have reduced antilock control and the system needs attention
A newly illuminated malfunction lamp while underway can indicate loss of ABS control. It is not a normal cycling indicator and does not by itself prove all foundation braking is lost. Arrange service and follow the vehicle's instructions; any separate braking symptoms require their own response.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical59, printed2-35; 2.18.3 How to Know If Your Vehicle Is Equipped with ABS;2.18.7 continuation physical60/printed2-36. ↗
Two otherwise comparable stopping situations are being discussed, one with working ABS and one without. What claim about the ABS-equipped truck should the driver reject?
Correct answer: Working ABS guarantees a shorter stopping distance in every situation
ABS helps preserve control by limiting wheel lock, but it does not necessarily shorten stopping distance. Do not use its presence to assume a guaranteed distance advantage or reduce safety margins. This does not teach pumping, stab braking or a universal emergency pedal sequence.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section2 Driving Safely, physical60, printed2-36; 2.18.8 Safety Reminders - ABS won't necessarily shorten stopping distance; related overview physical59/printed2-35. ↗
A pre-trip inspection finds a leaking exhaust joint near a truck's cab. The pipe is still firmly mounted. Why does that mounting not make the truck ready for use?
Correct answer: The leak can allow harmful exhaust fumes into the cab
An exhaust system can be secure yet still leak harmful fumes toward the cab or sleeper. Have the defect assessed and corrected; the absence of visible smoke or a closed window does not establish safety.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 27, printed 2-3; 2.1.3 What to Look For - Exhaust System Defects. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
A truck and a car have remained side by side on a multilane road. Traffic allows a gradual, legal spacing adjustment. Which plan best preserves room for an unexpected conflict?
Correct answer: Seek a position where the truck is no longer alongside the car
The manual identifies two hazards of prolonged side-by-side travel: another driver may turn into the truck, and the truck may be trapped when it needs room to change lanes. When safely possible, seek open space rather than remaining alongside another vehicle. Any adjustment still requires normal observation, safe spacing and lawful speed.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 41, printed 2-17; 2.7.3 Space to the Sides - Traveling Next to Others. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
A safely parked truck has just been started. Its engine oil pressure stays below the normal range specified for that vehicle, rather than rising normally. Other gauges look satisfactory. What should the driver do?
Correct answer: Shut the engine off and have the oil-pressure problem assessed
Oil pressure should rise normally after startup. The actual Figure 2.5 warns to stop the engine for low, dropping or fluctuating oil pressure because engine damage can occur rapidly. Other normal gauges do not cancel that warning; use the actual vehicle's specifications, not the figure's generic pressure numbers.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 28, printed 2-4; 2.1.5 Step 3 - Look at the Gauges; Figure 2.5 Oil Pressure. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
A straight truck is traveling over uneven pavement where an unexpected pothole could jolt the steering wheel. Which ordinary grip best supports control?
Correct answer: Hold the wheel firmly with hands on opposite sides
The manual calls for a firm two-handed grip on opposite sides of the wheel. A pothole or curb impact can pull the wheel away from a loose grip. This is normal control advice, not an instruction to drive into a hazard or make an abrupt evasive turn.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 32, printed 2-8; 2.2.2 Steering. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
A truck driver checks the mirrors but watches only the rear bumper of the vehicle immediately ahead. What should improve the forward-looking pattern?
Correct answer: Shift attention between nearby conditions and traffic well ahead
Seeing well ahead gives time to plan for traffic changes, but it does not mean ignoring nearer hazards. Shift forward attention between near and far while maintaining the rest of the observation routine. No fixed look-ahead distance or time is tested here.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 34, printed 2-10; 2.4.1 Seeing Ahead; Figure 2.6. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
A tall truck is beside a shoulder that drops sharply below the pavement, with tree limbs near the road edge. Which assessment of the truck's clearance is sound?
Correct answer: The drop can tilt the truck and move its upper body toward roadside objects
The manual warns that a sharp pavement-edge drop can tilt a vehicle toward roadside objects, bringing the top into contact with signs or tree limbs. Wheel clearance and level-ground height alone do not establish upper-body clearance. This is hazard recognition, not a procedure for recovering from a shoulder departure.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 43, printed 2-19; 2.8.2 Hazardous Roads - Drop Off. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
Standing water lies in a truck's path after heavy rain. What effect must the driver anticipate if the tires begin to hydroplane?
Correct answer: Water can separate the tires from firm road contact and sharply reduce traction
During hydroplaning, tires ride on water or slush and lose effective contact with the road, leaving little or no traction for steering or braking. This question identifies the hazard; it does not give a clutch, brake or ABS recovery sequence or a universal onset speed.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 38, printed 2-14; 2.6.2 Matching Speed to the Road Surface - Hydroplaning; continued physical39. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
After a freezing night, sunlit parts of a route have thawed. A truck is approaching a stretch shaded by trees. What should the driver allow for?
Correct answer: Ice may remain in the shaded area after open areas have thawed
Shaded parts of a road can remain icy and slippery after open areas have melted. Do not assume uniform traction from conditions on the sunlit portion; adjust to the actual conditions without abrupt changes.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 38, printed 2-14; 2.6.2 Matching Speed to the Road Surface - Identifying Slippery Surfaces, Shaded Areas. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
A car is following a straight truck too closely. Traffic permits the truck driver to make a gradual adjustment without changing lanes. Which change to the space ahead can reduce the need for a sudden stop?
Correct answer: Gradually increase the following distance in front of the truck
More room ahead helps the truck driver avoid sudden speed or direction changes when someone is following too closely. Open that space smoothly; do not brake-check, crowd the next vehicle or speed up to escape the tailgater.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 41, printed 2-17; 2.7.2 Space Behind - Dealing with Tailgaters Safely; preceding physical40 context. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
On an unlit road, a truck's stopping distance at its present speed is longer than the clear distance illuminated ahead. The headlights work and the road seems quiet. What should change?
Correct answer: Reduce speed so the truck can stop within the distance the driver can see
Working headlights still provide a limited view. Adjust speed so stopping distance fits within the visible clear roadway; otherwise a hazard may become visible too late. The manual's generic headlight ranges are not treated as this truck's actual sight distance.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 50, printed 2-26; 2.11.3 Roadway Factors - Poor Lighting; 2.11.4 Vehicle Factors - Headlights; corroborating2.6.4 physical39. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
An oncoming vehicle's bright headlights create glare. A right lane-edge marking is visible. What viewing approach does the manual recommend while the truck driver continues monitoring the road?
Correct answer: Look slightly right toward the lane edge instead of directly at the lights
Avoid looking directly into the oncoming lights. The manual recommends looking slightly right toward an available lane or edge marking, while retaining awareness of the road. Retaliatory high beams add glare for the other driver and do not solve the problem.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 51, printed 2-27; 2.11.5 Night Driving Procedures - Avoid Glare from Oncoming Vehicles. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
A truck is safely parked before departure, and the driver needs to enter an unfamiliar destination into the navigation unit. Which plan best reduces distraction on the trip?
Correct answer: Enter it and review the route while safely parked before moving
Review maps, program navigation and plan the route before driving begins. If more attention is needed later, use an appropriate safe stopping place instead of trying to complete the task while operating the truck. This is distraction-prevention advice, not a new claim about the legal definition of driving.
Source: North Carolina Commercial Driver's License Manual, 2005 CDL Testing System, Version July 2014; current NCDMV-linked 162-page PDF, metadata modified August 25, 2026; Section 2 Driving Safely, physical 47, printed 2-23; 2.9.6 Don't Drive Distracted - Review maps, program GPS and plan route. Complete relevant page text and rendered page reviewed September 13, 2026; generic numeric examples not used as current vehicle specifications. ↗
