CDL Info Flashcards
What age must be be to obtain your CDL?
18 if in state 21 if interstate
What defines a Commercial type vehicle?
Single vehicle with a GVWR of 26001 lbs, Combination vehicle of 26001lbs or more and a trailer of 10000lbs or more, 16 or more passengers, Carrier of hazardous materials that require placarding.
Vision standards?
20/40 vision and 140 degrees of horizontal vision
What is a pre-trip inspection?
Helps you find problems that might cause a future breakdown or crash.
Minimum tread depth for steer tires?
4/32”
There should be atleast 2/32” tread on all tires except the steer tires with no major cuts or damage? T/F
True
Rust around lug nuts would indicate what?
Loose lug nuts
Slack adjusters on the brake system should be no more than how many degrees when applied?
90°
Steering wheel play should be no more that ____ degrees or ___ inches on a 20inch wheel?
10 degrees either way or 2 inches
Vehicle must be equipped with the following per the CDL manual for safety equipment.
Fire extinguisher
Spare electrical fuses
Three reflective triangles as warning devices
Air brakes should not drop more that ___ psi when brake is applied for one minute?
3psi
At what Psi will the low air light and or buzzer come on?
60psi
At about what psi will the parking brake knob pop out to apply the brakes?
40psi
While traveling at 40mph maintain atleast one second for every how many feet of vehicle?
10feet
Add speed over 40mph how much time should you add?
1 second to make it 2 seconds per 10ft
Countersteering is turning the wheel back in the other direction after steering to avoid a traffic emergency. True/False
True. Try not to over steer
In wet or slippery road conditions vehicle orvengine retarders should always be used?
False
When the brake is released, about how much “slack” should be in the slack adjuster?
1 inch
When the engine rpm is at an idle, air pressure should build from 85 to 100psi in how much time?
45 seconds
Braking distance?
Time it takes to come to a complete stop once the brakes are applied
Brake lag distance?
The distance from the time you start to apply the brake until the brakes start to take hold.
Reaction distance?
The distance traveled from the time your brain tells your foot to move from the accelerator to the brake pedaland pushes the brake.
Perception distance
Distance your vehicle travels from the time you see a hazard till the time your brain recognizes the hazard
