WA CDL General Knowledge Test

WA CDL TEST Most serious vehicle skids result from: A. Driving too fast for road conditions B. Poorly adjusted brakes C. Bad Tires answersA. Driving too fast for road conditions You're driving a new truck with a manual transmission. What gear will you probably have to use to take a long, steep downhill grade? A. Higher gear than you would use to climb the hill B. The same gear you would use to climb the hill C. A lower gear than you would use to climb the hill answersC. A lower gear than you would use to climb the hill There are 2 things a driver can do to prevent a rollover. They are: (1) Go slow around turns; and (2): A. Make sure that the brakes are properly balanced B. Keep the cargo as close to the ground as possible C. Keep both hands firmly on the steering wheel answersB. Keep the cargo as close to the ground as possible Which of these can cause a fire? A. Under inflated tires B. Loose fuel connections C. All of the above answersC. All of the above If you're driving a slow -moving vehicle on a 2 -lane highway, you must pull off at the first safe turnout if the number of vehicles behind you is: A. 5 or more B. 3 or more C. 7 or more answersA. 5 or more Rust around a lug nut indicates: A. No danger is present the wheel needs cleaning B. A loose lug nut C. The lug nut needs to be replaced answersB. A loose lug nut When checking the adjustment on air brakes, slack adjusters should have no more than: A. 1 inch of travel B. 2 inches of travel C. 3 inches of travel answersA. 1 inch of travel You're coupling a semi -trailer to your tractor but haven't yet backed under. The trailer is at the right height when: A. The end of the kingpin is even with the top of the fifth wheel. B. It will be raised slightly when the tractor is backed under it. C. The kingpin is about 1¼ inches above the fifth wheel. answersB. It will be raised slightly when the tractor is backed under it. The braking power of the spring brakes: A. Increases when the service brakes are hot. B. Isn't affected by the condition of the service brakes. C. Depends on the service brakes being in adjustment. answersC. Depends on the service brakes being in adjustment. Your brakes are fading when: A. You have to push harder and harder to get the same stopping power on a downgrade. B. The brake pedal feels firm when you apply pressure. C. You release pressure on the brake pedal and speed increases. answersA. You have to push harder and harder to get the same stopping power on a downgrade. You're driving on a slippery road during the day. What does the CDL Guide say about how much space you should keep ahead of your truck? A. Allow "the same amount of space you would at night." B. Allow "one vehicle length for every 10,000 lb. of gross vehicle weight." C. Allow "more space" than is needed for ideal driving conditions. answersC. Allow "more space" than is needed for ideal driving conditions. If your bus has an emergency exit door, it must: A. Be free to open for fresh air. B. Be closed when operating the bus. C. Always have a red door light on. answersB. Be closed when operating the bus. The most common bus collisions often happen at: A. Intersections. B. Stop signs. C. Railroad crossings. answersA. Intersections. You should know the outage needed for the liquids you carry because: A. Tank baffles aren't always legal with outage. B. Some of the heaviest liquids don't need any. C. Some liquids expand more than others do when they get warm. answersC. Some liquids expand more than others do when they get warm. The amount of liquid to load into a tank depends on: A. The weight of the liquid. B. The legal weight limits. C. All of these. answersC. All of these. Empty trucks: A. Need less space ahead than full ones. B. Require greater stopping distance than full ones. C. Have better traction when stopping than full ones. answersB. Require greater stopping distance than full ones. When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to happen when the trailer is: A. Empty or lightly loaded. B. Fully loaded or very heavy. C. Out of brake adjustment. answersA. Empty or lightly loaded. The trailer hand valve (also called the trolley valve or Johnson bar) works the trailer brakes. Don't use it in driving because of the danger of making the trailer skid. The trailer hand valve should only be used when: A. There is ice and snow, to prevent skidding. B. Testing the trailer brakes after hooking up to a trailer. C. You will be parked for a short time. answersB. Testing the trailer brakes after hooking up to a trailer. What action should you take if your bus stalls on a railroad tracks? A. If a train schedule is maintained in the bus and no train will pass within 1 hour, passengers can stay on the bus. B. Passengers can stay in the bus provided you can clearly see no trains for 500 feet in both directions. C. Evacuate all passengers immediately. answersC. Evacuate all passengers immediately. If you're in an accident that causes injury to anyone, or if the damage amounted to $700 or more, you must file a state accident report within: A. 24 hours. B. 48 hours. C. 4 working days from the date of the accident. answersC. 4 working days from the date of the accident. How often should you check your cargo? A. Within the first 50 miles after beginning a trip B. Every 150 miles or every three hours C. After every break you take during driving D. All of the above answersD. All of the above