Indiana CDL: General Knowledge Practice Test

Not quite. The answer is 60

Under the Hours of Service 60-Hour Rule, you must not be on duty longer than 60 hours in a 7-day period. That's an average of about 8.6 on-duty hours per day. Learn how to budget your time so you can work a reasonable number of hours each day. Note that "on duty" includes all work time, both driving and not driving (such as when conducting pre-trip inspections).

Not quite. The answer is Your judgment and self-control are affected.

Alcohol affects the body in many different ways, but it first affects your judgment and self-control. As a result, you may not realize how drunk you are becoming, and you may start to make dangerous decisions.

Not quite. The answer is Pitman arm

Component E is the Pitman arm. The Pitman arm connects the drag link to the output shaft of the steering box. As the output shaft rotates, the other end of the Pitman arm moves forward or backward, causing the drag link to move left or right, which turns the front wheels in that direction.

Not quite. The answer is Many CMV accidents occur between midnight and 6:00 a.m.

Driving through the night when you would normally be asleep increases your risk of an accident. Many CMV accidents occur between midnight and 6:00 a.m. If you've had less than 6 hours of sleep before you drive, your risk of an accident is tripled. And one study has found that going without sleep for more than 24 hours can impair your coordination and reaction time as much as being legally intoxicated.

Not quite. The answer is Main spring

Component R is a main leaf spring. Component U is an auxiliary leaf spring (sometimes called a helper spring), attached to the axle with the same U-bolt. Auxiliary springs are often employed in rear suspensions that have to support heavy loads.

Not quite. The answer is File a complaint with OSHA.

The Occupational Safety and Health Administration (OSHA) Whistleblower Protection Program enforces the whistleblower provisions of more than 20 whistleblower statutes protecting employees from retaliation for reporting violations of various federal workplace laws. If your employer retaliated against you for expressing a job-related safety concern, you may file a complaint with OSHA within 30 days.

Source: "The Whistleblower Protection Program," Occupational Safety and Health Administration, https://www.whistleblowers.gov/

Not quite. The answer is No.

Trucks brake best when they are used as they were designed: to carry a properly balanced load. Empty trucks actually have greater stopping distances than loaded trucks because they have less traction.

Not quite. The answer is one-half times the weight of the cargo tied down.

Under federal regulations, the aggregate working load limit of the tie-downs used to secure cargo must be at least one-half times the weight of the cargo. Federal regulations also specify a formula to compute the aggregate working load limit of the tie-downs from the working load limits of the individual tie-downs. The _working load limit_ of an individual tie-down is defined as the maximum load that may be applied to it, as specified by its manufacturer. [49 CFR 393.106],

Source: 49 CFR 393.5

Not quite. The answer is Both of the above are correct.

When testing the service brakes, check the following: (1) whether the brake pedal holds up or sinks to the floor; (2) whether the vehicle seems to pull to one side; (3) whether it takes longer than it should to stop your vehicle; and (4) whether the brakes just "feel strange," based on your experience driving comparable CMVs. Any of these signs could indicate a problem with the brake system that should be corrected before you drive the vehicle.

Not quite. The answer is Within the first 50 miles of the trip and then every 150 miles or every 3 hours, whichever comes first

While the rules vary by jurisdiction, your state CDL handbook states that you should check your cargo within the first 50 miles of your trip and then every 3 hours or 150 miles, as well as after each break you take.

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 life.

The "No Human Trafficking on Our Roads" Act became law on January 8, 2018. On July 29, 2019, based on this law, FMCSA announced a new rule: Any driver who is convicted of human trafficking will be permanently banned from operating a CMV for which a CDL or a commercial learner’s permit (CLP) is required.

Not quite. The answer is Either you or your co-driver

Under federal regulations, at the end of each day, you must prepare a Driver Vehicle Inspection Report (DVIR) to document any defects you found in your CMV. If you had a co-driver, only one of you needs to sign the DVIR, provided that both of you agree about the defects or deficiencies identified.

Not quite. The answer is make turns as gently as possible.

If you take a curve or a turn too fast on a slippery road, you risk a skid. Slow down beforehand. Braking in a curve can cause a skid.

Not quite. The answer is involves keeping a vehicle in a straight line when braking.

In controlled braking, you apply the brakes as hard as you can without locking the wheels, keeping movement of the steering wheel to a minimum.

Not quite. The answer is It can help prevent distracted driving.

Anything that takes your eyes off the road constitutes a distraction. This can include fiddling with vehicle controls, such as mirrors, radio controls, or climate controls; reading maps or programming GPS navigators; or talking or texting on a hand-held cell phone. Try to get these activities done before you start your trip.

Not quite. The answer is Differential

A differential uses a series of gears to accomplish several functions. First, it transfers torque from the driveshaft to the axle. Because the axle is at 90 degrees from the driveshaft, the differential also turns the torque by 90 degrees accordingly. The outside of a curved road is longer than the inside. On such a curve, the differential lets the outside half of the axle turn faster than the inside half of the axle, so that the outside wheels can cover a greater distance than the inside wheels. If there were no differential, the outside wheels would turn at the same rate as the inside wheels, causing at least some of the wheels to drag on the pavement.

Not quite. The answer is one-half.

On a slippery road surface, your vehicle's wheels will have less traction, and the vehicle's braking distance will increase significantly. On wet roads, reduce your speed by about one-third. On snow, reduce your speed by about one-half. On ice, slow down to a crawl and stop driving altogether if possible. (On ice, your vehicle's braking distance may increase tremendously.)

Not quite. The answer is A road user or road condition that presents a possible danger

A hazard is a road user or road condition that presents a possible danger. A hazard is something that could go wrong but shouldn't if you've been vigilant.

Not quite. The answer is 70

Under the Hours of Service 70-Hour Rule, you must not be on duty longer than 70 hours in an 8-day period. That's an average of about 8.75 on-duty hours per day. Learn how to budget your time so you can work a reasonable number of hours each day. Note that "on duty" includes all work time, both driving and not driving (such as when conducting pre-trip inspections).