Your loaded truck has a high center of gravity. A curved exit has a posted speed that nearby cars are maintaining. What is the safest judgment?
Correct answer: The truck may need a lower speed before entering the curve
A high-center-of-gravity truck can roll over in a curve even when its tires retain traction. A posted speed or the speed of cars is not a guarantee that the curve is safe for your truck and load.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 25; 2.6.3 Speed and Curves; also p28 2.8.2 Off Ramps/On Ramps. ↗
A driver estimates stopping room using only the distance travelled after the brakes begin slowing the truck. What important distance has been left out?
Correct answer: The distance travelled while recognizing the hazard and reacting
Stopping room must allow for perception and reaction as well as braking. The truck continues moving while the driver recognizes a hazard and begins the response. Exact distances vary with the situation.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 24; 2.6.1 Stopping Distance; continuation p25 and Figure 2.11. ↗
A car is following your truck too closely. Traffic ahead is steady, and you can safely increase your own following gap. Why is doing so helpful?
Correct answer: It gives you more room to slow gradually if traffic ahead changes
Extra space ahead reduces the chance that you will need a sudden speed or direction change. Signal early and slow gradually; do not try to punish the tailgater or speed up to escape.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 27; 2.7.2 Space Behind — Dealing with Tailgaters Safely. ↗
Gusty crosswinds are expected as your lightly loaded truck emerges from a tunnel. When traffic allows, which position gives you more room for a possible wind-driven movement?
Correct answer: Avoid remaining directly alongside another vehicle
Strong winds can make lane keeping harder, especially for lighter vehicles and when leaving a tunnel. Avoid unnecessary side-by-side travel so there is more clearance if either vehicle moves.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 27; 2.7.3 Space to the Sides — Traveling Next to Others and Strong Winds. ↗
Your truck's body sits higher after its load is removed. It passed beneath a low canopy when loaded earlier. What should you do before using that route again?
Correct answer: Reassess the overhead clearance for the truck's present height
Do not assume a previously used overhead clearance is still sufficient. Where unloading raises the vehicle, its present height must be considered; the earlier loaded passage is not proof of clearance.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 27; 2.7.4 Space Overhead. ↗
A heavily loaded, low-clearance truck must enter a yard across a deep drainage dip. The opening is wide enough. What additional concern must be checked?
Correct answer: Whether the underside or the ends could drag or become hung up
Width is only one part of clearance. A loaded vehicle can have little space underneath, and drainage channels can make its ends drag. Do not take a chance on becoming hung up.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 27; 2.7.5 Space Below. ↗
A gap in traffic would let a small car cross a road comfortably. You are driving a long, heavily loaded truck. What should guide your decision?
Correct answer: Allow for your slower acceleration and clearing the entire truck
A large loaded vehicle may need a much larger gap than a car. Consider its acceleration and total length, and ensure it can get completely across before approaching traffic reaches it.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 27; 2.7.7 Space Needed to Cross or Enter Traffic. ↗
Far ahead, a cardboard box lies in your truck's lane. You cannot tell what is inside. What is the best approach?
Correct answer: Treat it as a possible solid obstacle and plan a safe response early
A harmless-looking box may contain heavy or solid material. Detect it early so you have time to slow or choose a clear path without an abrupt, unsafe maneuver.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 28; 2.8.2 Hazardous Roads — Foreign Objects. ↗
As you approach an alley in a truck, only the nose of a car is visible beyond a wall; its driver remains hidden. What should you anticipate?
Correct answer: The driver may enter without seeing you, so be ready to stop
When a wall hides the other driver from you, that driver's view of approaching traffic may also be blocked. Treat the car as a developing hazard rather than assuming you have been seen.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 28; 2.8.3 Drivers Who Are Hazards — Blocked Vision. ↗
A motorcyclist ahead repeatedly looks over a shoulder but has not signalled. What should you infer while driving your truck?
Correct answer: The rider may be preparing to move; watch and preserve response space
A head or shoulder check can be a clue to an intended turn or lane change, even without a signal. It is a reason to anticipate a possible move, not proof of a particular maneuver or an instruction to you.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 29; 2.8.3 Driver Body Movement as a Clue; 2.8.4 Always Have a Plan. ↗
Before a night drive, the truck's bright interior lighting makes it harder to see outside. How should you adjust the cab lighting?
Correct answer: Reduce interior glare while keeping the gauges readable
Keep the cab from becoming too bright at night. Reduce unnecessary interior light and adjust instrument brightness low enough to help outside vision while still allowing you to read the gauges.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 31; 2.11.5 Night Driving Procedures — Use High Beams When You Can, cab-lighting paragraph. ↗
A truck driver keeps both hands on the wheel and looks forward but becomes absorbed in an intense conversation. Why is this still unsafe?
Correct answer: Attention can leave the driving task even while the eyes face the road
Mental distraction can keep you from recognizing what you are looking at. Avoid complex or emotionally intense conversations that compete with the attention needed for driving.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 29; 2.9 Distracted Driving; 2.9.1 Don't Drive Distracted. ↗
Snow and road spray cover the windshield, and your truck's wipers stop clearing it well enough to see. What should you do?
Correct answer: Stop safely and have the visibility problem corrected
If failed wipers leave you unable to see adequately, stop safely and fix the problem. Mirrors and another vehicle's lights cannot replace a clear forward view.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 32; 2.13.1 Vehicle Checks — Wipers and Washers. ↗
After a cold night, sunlit pavement has thawed, but the next bend stays shaded. What should you allow for as you approach it?
Correct answer: Ice may remain in the shade even though nearby open pavement has thawed
Shaded road sections may remain icy and slippery after exposed areas have melted. Assess the shaded section separately and approach with speed appropriate to possible reduced traction.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 25; 2.6.2 Matching Speed to the Road Surface — Identifying Slippery Surfaces, Shaded Areas. ↗
As you accelerate gently in a truck on a slick surface, the drive wheels begin to spin. Which accelerator response helps avoid worsening the loss of traction?
Correct answer: Ease off the accelerator instead of adding more power
Too much drive-wheel power for the available grip can cause wheelspin. Reduce the accelerator input rather than feeding the spin. This is an acceleration-traction question, not a braking-skid procedure.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 21; 2.2.1 Accelerating — poor traction; also p36 2.19 Over-acceleration. ↗
After a sudden heavy thump, you bring the truck to a safe off-road stop. It has dual rear tires and seemed to steer normally. Before resuming, what should be checked?
Correct answer: All tires, including the inner and outer duals, from a safe position
A failed dual tire may not produce an obvious handling change. After a suspected failure and a safe stop, check all tires rather than treating normal steering as proof that they are sound.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 36; 2.17.4 Tire Failure — Respond to Tire Failure, Check the Tires; context begins p35. ↗
Your truck's brakes have failed on a steep downgrade, and a signed escape ramp is available ahead. What is the safest choice?
Correct answer: Use the escape ramp rather than pass it hoping the brakes recover
Use an available escape ramp after brake failure on a downgrade. Delay lets speed build and makes stopping harder. The ramp is intended for runaway vehicles, not only for a particular brake-system type.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 35; 2.17.3 Brake Failure — Brake Failure on Downgrades; also p34 2.16.4 escape-ramp paragraphs. ↗
A truck has properly working ABS. A driver proposes following traffic more closely because the system will shorten every stop. What is the correct response?
Correct answer: Reject the idea: ABS helps control but does not guarantee a shorter stop
ABS helps prevent brake-induced wheel lock and maintain control. It does not necessarily shorten stopping distance and is not permission to reduce a safe following gap.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 36; 2.18 ABS opening; 2.18.4 How ABS Helps You; 2.18.8 Safety Reminders. ↗
After the normal start-up checks have finished, your truck's yellow ABS malfunction lamp comes on during the trip. What does that indicate?
Correct answer: ABS control may be lost on one or more wheels and needs attention
A malfunction lamp that comes on while underway warns of a possible ABS fault, not normal ABS operation. Normal brake functions may remain, but do not assume antilock protection is available; report the fault and have the system checked promptly.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 36; 2.18.3 How to Know If Your Vehicle Is Equipped with ABS; 2.18.7 Braking If ABS Is Not Working. ↗
During a hot-weather trip, the coolant-temperature gauge rises above the vehicle's highest safe range. What should you do?
Correct answer: Stop driving as soon as safely possible and have the overheating checked
A temperature above the safe range can indicate a problem that may lead to engine failure. Stop as soon as safely possible and investigate through safe, vehicle-appropriate procedures; this is not an instruction to open a hot cooling system.
Source: Georgia DDS Commercial Driver's Study Guide, 2023–2024 cover, current linked PDF modified June 16, 2025; Section 2 Driving Safety, printed/physical 32; 2.14.1 Vehicle Checks — Engine Coolant. ↗
