Wisconsin CDL Practice Test

Not quite. The answer is Allow injured persons to become chilled or overheated.

If qualified medical personnel are at the accident scene, stay out of their way unless they ask for help. If they haven't arrived yet, try to keep injured persons warm (but neither chilled nor overheated). Don't move them unless there is a danger of fire or another accident from passing traffic.

Not quite. The answer is a first-aid kit.

Federal regulations require every CMV to carry one of the following warning devices in case the driver must stop the CMV on the road: three reflective triangles, three liquid-burning flares, or six fusees. Federal regulations also require every CMV to carry a fire extinguisher. Your state may also require a first-aid kit or seat belt cutter to be carried on certain types of CMVs, such as school buses.

Source: 49 CFR 393.95

Not quite. The answer is Both of these answers are correct.

Federal regulations require shippers to warn drivers and others about the nature of the hazardous materials they are shipping. The shipper affixes US DOT-compliant HazMat labels to the packages and supplies the driver with the appropriate placards to attach to his or her vehicle. The shipper also notes the hazardous nature of the materials on the shipping papers. [49 CFR 172.400],

Source: 49 CFR 172.407

Not quite. The answer is Tie rod

Component A is the tie rod. The tie rod connects the left and right steering knuckles to each other so that the left and right front wheels will turn in unison.

Not quite. The answer is The use of brakes adds to the braking effect of the engine.

If you keep using your brakes to control your speed on a long, steep downgrade, the brakes may overheat and fade (become less effective). Instead, use engine braking, and use your brakes only as a supplement to the braking effect of the engine.

Not quite. The answer is All of the above can help.

There are a variety of ways to help prevent cargo theft, and you should employ several of them. First, be aware of your surroundings. While driving, check frequently whether you're being followed. Park only in well-lit, relatively secure locations. Stay in communication with dispatch. Whenever you stop at a rest area or truck stop, let dispatch know about it. An uncoupled trailer should be locked so it can't be moved. Kingpin locks and landing gear locks are available for this purpose. Always lock your truck whenever you must leave it unattended.

Source: "How to stop cargo thieves dead in their tracks," American Trucker, August 31, 2019

Not quite. The answer is Do all of the above.

If an aggressive driver is trying to confront you, do not give the person the confrontation that he or she seeks. Instead, seek police, peace, and safety.

Not quite. The answer is Protect the accident scene.

At an accident scene, first protect the accident scene to help prevent another accident. Pull your vehicle as far away from traffic and as close to the side of the road as possible. Set out warning devices such as reflective triangles.

Not quite. The answer is a TWIC card.

The Transportation Worker Identification Credential, also known as TWIC®, is required by the Maritime Transportation Security Act for workers who need access to secure areas of the nation’s maritime facilities and vessels. To obtain a TWIC card, you must apply to the Transportation Security Administration (TSA), either at their website or in person at a TWIC application center. TSA will conduct a security threat assessment (background check) of you, and if all goes well, they will issue you a TWIC card. Note that if you have a valid TWIC card, you won't need to go through another security threat assessment to obtain a Hazardous Materials endorsement.

Not quite. The answer is do both of the above.

You perform these actions during Step 3 (Get In and Start Engine) of the Seven-Step Inspection Method. To check the engine, first make sure the parking brake is on. Shift into Neutral (for a manual transmission) or Park (for an automatic transmission). Then start the engine and listen for any unusual noises. There are many other actions you must perform in this step as well.

Not quite. The answer is Stay off the brakes until the vehicle slows down on its own.

If a tire blows out, don't brake. Braking could cause you to lose control. Instead, let your vehicle slow itself down. Then brake very gently and pull over.

Not quite. The answer is Axle mounts should be checked at each point where they are secured to the vehicle frame and axle.

Suspension components should be checked on every axle (power unit and trailers, if so equipped). Look for broken or distorted coil springs. Damaged coil springs can cause "bottoming out" or poor handling. Spring mounts should be checked at each point where they are secured to the vehicle frame and axle. Loose, worn, or broken spring mount components may lead to loss of vehicle control or even a rollover.

Not quite. The answer is Brakes can grab or become weak.

Brakes use friction to convert the kinetic energy of your moving vehicle into heat. If the brakes get wet, the brake shoes or brake pads may produce less friction. The brakes will grab, apply unevenly, or become weak. When you try to brake, your braking distance may increase, your vehicle may pull to one side, or the wheels may lock. On a wet road, locked wheels can cause a skid (or even a jackknife if you're pulling a trailer).

Not quite. The answer is signs on the outside of the vehicle that identify the hazard class of the cargo.

Hazardous materials placards are four regulated signs on the outside of the vehicle that identify the hazard class of the cargo for those who need to know, such as emergency service personnel or those who load and unload cargo.

Not quite. The answer is 10 – 15 degrees Fahrenheit.

Diesel #2 (2-D) fuel is the most common type of fuel for large commercial diesel-powered vehicles. This type of fuel contains paraffin. When the ambient temperature drops to around 14 degrees Fahrenheit, the paraffin starts to form visible crystals, making the fuel appear cloudy. The vehicle may still be drivable. However, if the temperature continues to drop further, the paraffin may gel to the point that it clogs the fuel filter. At this point, the vehicle won't start at all, or engine performance will be impaired. To prevent gelling, you can add an anti-gel additive to the fuel, switch to a winter blend of fuel that is less likely to gel at these temperatures, or use a fuel warmer or fuel line heater.

Not quite. The answer is when possible.

Large vehicles can have large blind spots. Whenever you back a CMV, have a helper stand near the rear of your vehicle and observe areas that you cannot. He or she can signal you to stop before an accident can occur.

Not quite. The answer is The weight of a vehicle changes its height.

Your truck's height will vary depending on how much weight you're hauling. An empty or lightly loaded vehicle will ride higher than one that is weighed down with heavy cargo. Don't put all your trust in posted road clearance signs. The height of the roadway may have changed since the sign was posted.

Not quite. The answer is Both of the above

There are many things you must check during your pre-trip inspection. During Step 1 (Vehicle Overview) of the Seven-Step Inspection Method, check the condition of the windshield wipers. During Step 4 (Turn Off Engine and Check Lights) and Step 5 (Walk-Around Inspection), you'll check that the lights are working.

Not quite. The answer is 4 seconds

The formula for following distance is one second per ten feet of vehicle, plus an extra second if you are traveling over 40 mph. Therefore, for a 40-foot vehicle traveling at 35 mph, you should leave a following distance of four seconds.

Not quite. The answer is Stop accelerating.

To recover from a skid, first stop doing what caused it in the first place. To recover from a drive-wheel acceleration skid, first take your foot off the accelerator. To recover from a drive-wheel braking skid, stop braking. To recover from a front-wheel skid that was caused by driving too fast for current conditions, slow down.