Colorado CDL DMV Knowledge Test Class B 2

Roads are especially slippery when it first begins to rain. Rain water initially mixes with oil and grease on the road to form a slippery film. As the rain continues, this mixture will eventually wash away.

Cargo must be properly loaded and secured to prevent it from falling or shifting dangerously. During a quick stop, improperly loaded cargo could injure or even kill the driver.

Tractors, trucks, and buses with Anti-Lock Braking Systems (ABS) have yellow malfunction lamps located on their instrument panels. Trailers have yellow ABS malfunction lamps on their left side, either on the front or rear corner.

When inspecting a vehicle's brakes, you should make sure the shoes and pads do not have oil, grease, or brake fluid on them.

Placards must be placed on the outside of vehicles carrying hazardous materials. They identify the specific class or classes of materials being carried and warn others of relevant hazards.

When exiting your vehicle during the basic vehicle control skills test, you must face the vehicle and maintain three points of contact at all times. If your testing vehicle is a bus, you must maintain contact with the handrail. Exiting the vehicle incorrectly may result in automatic failure of the basic control skills test.

Drivers who are holding conversations with others may not be paying full attention to the road and may make unsafe moves. Children do not always pay attention to traffic and may dart into the road without looking. Exercise caution when driving near road workers. This helps to keep the workers and other distracted drivers safe.

You will be denied a hazardous materials endorsement, or lose an existing endorsement, if you renounce your U.S. citizenship; are not a lawful permanent U.S. resident; are wanted for, indicted for, or convicted of certain felonies; are judged mentally defective or are committed to a mental institution; or are deemed by the Transportation Security Administration (TSA) to pose a security threat.

It is a driver's responsibility to inspect their cargo; recognize overloading or poorly balanced weight; know that the cargo is properly secured and not obscuring their view; and know that the cargo does not restrict access to emergency equipment. The driver is always responsible for their cargo, even if they were not the one who initially loaded and secured the cargo.

When turning quickly to avoid colliding with a hazard in the roadway, you should always keep both hands on the steering wheel. You must have a firm grip on the wheel to be able to turn quickly.

All commercial motor vehicles are required to be equipped with the proper emergency equipment. This may include spare electrical fuses; three red reflective triangles, six fuses, or three liquid burning flares; and at least one properly charged and rated fire extinguisher.

It is essential that a driver always uses proper signals to make their intentions known to others on the road.

Rust around wheel nuts can indicate that they are loose. If you observe rust, check the tightness of the nuts.

Texting while driving a commercial motor vehicle is both illegal and dangerous. Manually entering text into or reading text from any electronic device is considered texting.

When stopping your CMV on the side of a highway, warning devices must be placed 10 feet, 100 feet, and 200 feet behind the vehicle.

Always be sure that you are driving in a manner that will allow your vehicle to come to a complete stop, if necessary, within the area of the road ahead that you are able to see.

An Individual Vehicle Distance Record (IVDR) must include the following information about distance traveled: trip start and end dates; trip origin and destination points; route(s) of travel; beginning and ending odometer or hubometer readings; total distance traveled; in-jurisdiction distance; and power unit number or vehicle identification number.

Always drive cautiously around a stopped bus. Passengers may cross in front of or behind it, and the bus may prevent them from seeing your vehicle.

A safety belt is your best defense in the event of a collision. You must always wear a safety belt while operating a CMV.

Black ice is a thin layer of ice that is clear enough for the road surface to be seen through it. A road covered in black ice may look like it is merely wet. You should be very careful when temperatures are below freezing and the road looks wet.

A steering wheel with play of more than 10 degrees may be defective. On a 20-inch wheel, this is equal to about two inches of movement at the rim of the wheel.

In an air brake system, there are three different braking systems: a service brake system, a parking brake system, and an emergency brake system. The emergency brake system uses parts of both the parking and service brake systems.

Check your engine during the pre-trip inspection. After starting the engine, you should listen for unusual noises.

When approaching your vehicle before an inspection, make note of its general condition and ensure that it is not damaged or leaning. Look under the vehicle for fresh leaks. Check around the vehicle for hazards to movement, such as people, other vehicles, or low-hanging wires or tree limbs.

When driving a tractor-trailer combination that is equipped with an Anti-Lock Braking System (ABS), you should brake in the same manner that you would if the vehicle was not equipped with ABS.

When inspecting cargo, a driver must ensure that the cargo is balanced and properly secured. To reduce the risk of a rollover, the weight of a load of cargo should be kept as low as possible. A trailer should not be overloaded.

To warn drivers behind you that you are about to slow down, it may be a good idea to first lightly tap your brake pedal a few times to make the brake lights flash.

After a tire has been changed, you should stop a short while later to re-check the tightness of the lug nuts.

In the event of tire failure, hold the steering wheel firmly. Stay off the brakes and let the vehicle slow down on its own. Once the vehicle has slowed considerably, you should brake very gently, pull off the road, and stop. Check your tires after coming to a complete stop.

During the on-road driving skills test, make sure you do not put your vehicle over curbs, sidewalks, or lane markings. Stop behind stop lines, crosswalks, or stop signs. On multiple-lane roads, complete turns in the proper lane. Always move to or remain in the rightmost lane, unless the lane is blocked.

To check your vehicle's lights before a trip, you should set the parking brake, turn off the engine, remove the key from the ignition, and take the key with you. Turn on your low beam headlights and four-way flashers. Get out of the vehicle to make sure the lights are working properly.

If you are not confident that your vehicle will have enough room to safely pass under an overhead object, you should slow down and seek another route, if possible.

When inspecting a vehicle equipped with power steering, check the hoses, pumps, and fluid level. Be sure to check for and repair leaks before operating the vehicle.

When crossing railroad tracks during the on-road driving skills test, you must not stop, switch gears, pass another vehicle, or change lanes while any part of your vehicle is in the crossing.

A burning tire should be cooled with water. A driver may need to use large quantities of water to properly cool the tire.