New York CDL: General Knowledge Practice Test

Not quite. The answer is are caused by driving too fast or trying to stop too quickly.

Over-braking and over-steering can cause skids. Both over-braking and over-steering are more likely when you're driving too fast.

Not quite. The answer is Within 500 feet behind the vehicle

If you park on the side of the road and the view of your vehicle is obscured by a hill or curve, place a reflective triangle far enough (up to 500 feet) behind your vehicle so it can be seen by other drivers.

Not quite. The answer is It bleeds.

In hot weather, asphalt (tar) can rise to the pavement surface ("bleed") to form a shiny, black surface film. Watch for such spots, because this film can be quite slippery.

Not quite. The answer is wait until you are sure the car isn't in your blind spot.

Before you change lanes, you must first make sure that no vehicles are hiding in your blind spots.

Not quite. The answer is It can startle other drivers.

Your horn can startle other drivers, pedestrians, or animals. Hence, it should only be used to warn others of a potential hazard, not for general communication and certainly not to express anger or frustration.

Not quite. The answer is control of the vehicle.

For full control of your vehicle, you need to know when and how to upshift or downshift. Learn under what special conditions you should downshift. For example, learn how to use engine braking to slow your vehicle on a steep descent.

Not quite. The answer is If a hill or a curve keeps drivers behind you from seeing your vehicle within 500 feet, move the rear reflective triangle back down the road to give adequate warning.

If you must stop on a road or the shoulder of any road, turn on your four-way emergency flashers (not your taillights) and set out your emergency warning devices within ten minutes. If you stop beyond any hill, curve, or other obstruction that prevents other drivers from seeing your vehicle within 500 feet, place a reflective triangle up to 500 feet behind your vehicle to warn approaching drivers.

Not quite. The answer is 35 mph.

It's usually safest to drive at the speed of traffic rather than constantly pass other vehicles or invite other drivers to pass you. However, if there are lower speed limits posted for CMVs, obey them.

Not quite. The answer is Tractor and trailer

Either the tractor or the trailer can skid. If the drive wheels of the tractor lock, the tractor may skid, and the trailer may push the tractor sideways, causing a tractor jackknife. On the other hand, if the trailer wheels lock, the rear of the trailer may swing sideways, out of your lane. (This is more likely if the trailer is empty or lightly loaded.) This will result in a trailer jackknife.

Not quite. The answer is Both of the above

The most obvious sign of a tire blowout is a loud "bang," but there are other signs too. If the vehicle thumps or vibrates heavily, it may be a sign that one of the tires has gone flat. If the steering feels "heavy," one of the front (steering) tires may have failed.

Not quite. The answer is Your home terminal

According to federal regulation 49 CFR 395.8 and FMCSA Guidance FMCSA-HOS-ELD-TECH-395-FAQ26, you must record your duty status according to the time zone at your home terminal, including daylight savings time if it is in effect at your home terminal. Your "home terminal" is the place designated by your carrier, where you report for work at the start of your workday. Note that your carrier's main office may not be in the same time zone as your carrier's home terminal. Consider keeping a watch or smartphone app always set to your home terminal's local time so you can more easily log those times.

Not quite. The answer is Broken shock absorber

According to federal regulations and the North American Out-of-Service Criteria, among the many violations that can place your vehicle out of service are a broken axle (49 CFR 393.207(a)), a broken leaf spring (49 CFR 393.207(b)), and a broken U-bolt (49 CFR 393.207(a)). However, a broken shock absorber is not considered an out-of-service condition.

Not quite. The answer is All of the above are downsides.

Some emissions-control devices on diesel-powered trucks can adversely affect fuel economy and add to maintenance costs. For these reasons, some drivers have opted to "delete" (defeat or remove) the emissions-control devices and retune the engine to run well without the devices. However, doing so can cause you major problems. First, deleting an emissions-control device violates the federal Clean Air Act and federal regulations. The penalties include stiff fines. Second, a number of states, such as California, New York, and Minnesota, now require emissions testing of trucks. You will not be able to drive your truck there if it fails emissions testing there. Third, dealers and large reputable repair shops may refuse to service your vehicle after it's illegally modified. Fourth, if you ever wish to sell your vehicle, you must disclose its illegal modifications to potential buyers. If you sell the vehicle without disclosing this information, you risk legal action from the buyer after the buyer discovers the modifications. [40 CFR 1068.101],

Source: 42 U.S. Code 7522

Not quite. The answer is Both of the above

Underinflated tires, dual tires that touch, and loose fuel connections are just some of the things that can start a fire.

Not quite. The answer is both of the above.

Cargo must be loaded to keep the weight of the vehicle properly balanced. If there's not enough weight over the front axle, the front tires won't have enough traction for the vehicle to be steered safely.

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 Friday evening and Monday morning.

One study found that from 2006 to 2010, about 68% of cargo theft incidents occurred on weekends (from Friday evening to Monday morning). During these times, warehouses and distribution centers are often closed, and drivers are more likely to leave their loads parked in unsecured locations.

Not quite. The answer is adjust your speed to keep your stopping distance within your sight distance.

In the dark, you have no way of knowing what lies beyond the reach of your headlights. At night, you should slow to a speed that allows you to stop safely within the range of your headlights. Otherwise, if there is a hazard just beyond the range of your headlights, you may not be able to take action in time to avoid it.

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 U-joint

A universal joint (U-joint) connects two shafts to enable them to rotate together, even if they are at an angle to each other. As part of the drivetrain, one U-joint connects the transmission shaft to the drive shaft, and another U-joint connects the drive shaft to the input shaft of the differential. These U-joints are critical. If the drive shaft comes loose at one end, it may dig into the pavement, causing loss of vehicle control.