Oregon Commercial Driver Manual Flashcards

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Questions and Answers

What does CDL stand for?

Commercial Driving License (correct)

Certified Driving License

Commercial Driver License (correct)

Certified Driver License

What is a requirement for needing a CDL?

GVWR 26,001 or more, trailer over 10,000 when total weight is over 26,000 including tractor, 16 people or more (including driver), HAZMAT, motor home or RV when used for business.

What does Class A CDL allow?

Any vehicle combination.

What does Class B CDL allow?

Any single vehicle and a trailer less than 10,000 lbs. Signup and view all the answers

What does Class C CDL allow?

16 or more passengers or 26,001 lbs or less. Signup and view all the answers

Who is exempt from CDL requirements?

All of the above Signup and view all the answers

What are the types of vehicle inspections?

During a trip Signup and view all the answers

What should be inspected during a trip?

Tires, wheels, rims, brakes, lights/reflectors, brake & electrical connections, trailer coupling devices, cargo securing devices. Signup and view all the answers

What is the minimum tire tread depth for front tires according to CDM?

4/32 inches on all major grooves. Signup and view all the answers

What is considered a significant steering wheel play?

More than 10 degrees or 2 inches on a 20-inch steering wheel. Signup and view all the answers

What is the important oil pressure at idle?

5-20 PSI Signup and view all the answers

List some pre-trip inspection items.

Tire problems, wheel and rim problems, bad brake drums and shoes, steering system defects, suspension system defects, emergency equipment. Signup and view all the answers

When should you turn on 4-way flashers?

All of the above Signup and view all the answers

What conditions should be considered when driving on downgrades?

Total weight of the vehicle and cargo, length of the grade, steepness of the grade, road conditions, weather. Signup and view all the answers

What are the top causes of truck fires?

After accidents, under-inflated tires, electrical systems, fuel, cargo. Signup and view all the answers

What should be checked regarding brakes?

Drums or discs must not have cracks longer than 1/2 the width of the friction area, linings must not be loose, soaked with oil or grease, dangerously thin, and mechanical parts must be intact. Signup and view all the answers

What is the stopping distance equation?

Perception distance + reaction distance + braking distance + brake lag = total stopping distance. Signup and view all the answers

What is the number one cause of injury and death in roadway work zones?

Speeding traffic. Signup and view all the answers

What are ETOH equivalencies?

1.5 oz 80 proof shot, 5 oz table wine, 12 oz beer. Signup and view all the answers

Study Notes

CDL Requirements

A Commercial Driver's License (CDL) is necessary when driving vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more.
Trailers exceeding 10,000 pounds when the total weight is above 26,000 pounds require a CDL.
A CDL is needed for transporting 16 or more passengers, including the driver.
Handling hazardous materials (HAZMAT) mandates a CDL.
Business-related operation of motor homes or RVs above specified weight limits requires a CDL.

CDL Classifications

Class A CDL permits operation of any vehicle combination.
Class B CDL allows driving a single vehicle combined with a trailer weighing less than 10,000 pounds.
Class C CDL is for vehicles carrying 16 or more passengers or those with a GVWR of 26,001 pounds or less.

Exemptions from CDL

Emergency vehicle operators on duty are exempt from CDL requirements.
Military personnel driving military vehicles on duty do not need a CDL.
Farmers and ranchers may also be exempt under certain conditions.

Vehicle Inspections

Types of vehicle inspections include pre-trip, during trip, and post-trip inspections.
During a trip, check tires, wheels, rims, brakes, lights, trailer couplings, and cargo security.

Tire and Brake Specifications

Minimum tire tread depth is 4/32 inches on front tires and 2/32 inches on all other tires.
Low oil pressure should be between 5-20 PSI at idle and 35-75 PSI during operation.

Driving Safety Practices

Use 4-way flashers in situations such as tight turns or when stopping on the road.
Maintain a safe distance while driving in work zones, where speeding traffic is a leading cause of injuries and fatalities.
Time to look ahead while driving: 12-15 seconds or 1 block in the city, 1/4 mile on the open highway.

Emergency Procedures

In case of tire failure, maintain a firm grip on the steering wheel and avoid braking.
For returning to the road after leaving it, steer sharply to re-enter, then countersteer once back on pavement.

Skid Recovery Techniques

To correct drive wheel skids, stop braking, steer towards the skid, then countersteer.
For front wheel skids, release the accelerator and decrease speed.

Brake System Components

Key components of air brake systems include the air compressor, storage tanks, and brake pedal.
Parking brakes should be tested for effectiveness by ensuring the vehicle does not move when engaged.

Special Conditions

Excessive heat can cause brake fade, reducing braking efficiency.
Caution is needed on downgrades; factors such as vehicle weight and road conditions are crucial.

Hazard Awareness

A hazard is any condition on the road that poses a potential danger.
Aggressive driving disregards the safety of others, while road rage involves intent to physically harm.

Driving at Night

Critical factors include vision, glare reduction, and maintaining alertness.
Headlight ranges are approximately 250 feet for low beams and 350-500 feet for high beams.

Inspection Criteria

Always conduct an inspection for tire, wheel, and brake issues before driving. Look for excessive wear, damage, and ensure proper air pressure.

Emergency Equipment Requirements

Essential emergency equipment includes a fire extinguisher, spare fuses, and warning devices like reflective triangles.

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Description

Test your knowledge of the Oregon Commercial Driver Manual with these flashcards. Covering essential definitions and requirements for CDL classifications, this quiz is perfect for those preparing for commercial driving. Learn key facts on GVWR, Class A and B licenses, and more!