General Knowledge CDL
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- When should you downshift for a curve?
- You should downshift before entering the curve.
- What is true about downshifting before you reach a long downhill grade?
- Downshifting helps prevent the brakes from overheating and losing braking power.
- How can you know you have the engine speed and road speed to shift gears?
- By using the sound of the engine to know when to shift: you know you the engine speed and road speed to shift gears.
- What is the purpose of brake retarders?
- Retarders are to help slow down the vehicle and to reduce brake wear.
- Should you turn the retarder off when the road is wet or snow covered?
- Yes the retarder may cause a skid.
- How far a head should you look while driving?
- You should look 12-15 Seconds ahead of you while driving.
- What is a good reason for knowing what the traffic is doing on all sides?
- You need to have room to change lanes or stop.
- Should you always be looking into the distance ahead?
- No you should shift your attention back and forth near and far.
- What is a problem that you can have when using your mirrors?
- There are blind spots that your mirrors cannot show you.
- Where do you place the three reflector triangles on a two-lane road?
- Within 10 Feet of the rear and 100 feet to the rear and 100 feet from the front.
- Where do you place the three reflector triangles on a divided highway?
- Place them to the rear: Within 10 feet and 100 feet and 200 feet.
- What are three factors of total stopping distance with hydrolic brakes?
- Perception, Reaction, and braking distance.
- What should you do if your vehicle hydroplanes?
- Release the accelerator and push in the clutch.
- How long does it take to stop a heavy vehicle going 55 miles per hour on dry level road?
- About the length of a football field... about six seconds.
- What is probably your best driving speed? Traffic is moving at 35 miles per hour in a 55 mile per hour zone?
- 35 Miles per hour is probably your best driving speed.
- How does tire pressure affect hydorplaining?
- Hydorplaining is most likely to occur when tire pressure is low.
- How many times more distance does it take to stop when speed is doubled?
- Four times as much distance it takes to stop when speed is doubled.
- What is a good rule as to the speed you should go when driving at night?
- You should be able to stop within range of your headlights.
- When driving over 40 miles per hour how much space should you try to keep in front of you?
- At least one second for 10 feet of your vehicle length plus one second.
- What are some things to do if you are being tailgated?
- Avoid quick changes of speed or direction.
- Why can you never assume you will clear the heights posted at overpassess?
- Because some roads can cause your vehicle to tilt.
- You wish to turn right and you must swing wide.
- You should turn wide as you complete the turn.
- If you are turning left, which late should you use of two left turn lanes?
- Use the right hand lane.
- At night where can you look to avoid the glare of oncoming traffic?
- Try to look at the right side of the road and watch the sidelines.
- What are some items to check especially before driving in winter weather?
- Coolant level, Winshield Wiper and antifreeze.
- How often should you check your tires when driving in very hot weather?
- You should check your tires every 2 hours or every 100 miles.
- How do you lessen chances of having to make sudden moves to avoid hazards?
- Watch far enough ahead so that hazards cn be anticipated.
- What is a good policy for using your brakes when pulling off the road?
- Try to avoid using your brakes until your speed has dropped to about 20 miles per hour.
- In making a quick turn what is a point to remember?
- Do not apply the brakes when you are turning.
- what is controlled breaking?
- Controlled breaking is applying the brakes as hard as you can without locking the wheels.
- what is the major cause of most serious skids?
- Driving too fast for road conditions.
- What is the only way to stop a front wheel skid?
- Let the vehicle slow down stop turning and stop braking so hard.
- If you think a tire has blown out what should you do in stopping?
- Hold steering wheel firmly and dont touch brakes until vehicle has slowed.
- What should you do when using a fire extinguisher to fight a fire?
- Aim at the base of the fire
- As a driver for what you are responsible regarding your cargo?
- You are responsible for inspecting your cargo and knowing that it is sercurely tied down or covered.