Texas CDL Class B Quiz Questions
1. All automobiles with air brakes should have a low air stress caution sign. True or False?
- ANS-TRUE
2. Coffee and a touch sparkling air will assist a drinker sober up. True or fake? -
ANS-False.
3. Common medicines for colds can make you sleepy. True or False. - ANS-True.
4. Describe the proper braking method whilst going down an extended, steep downgrade. -
ANS-Apply brakes simply hard sufficient to sense a exact slowdown. When your pace
has been decreased approx. 5 MPH under your "safe" velocity, launch the brakes. When
your pace has improved for your "secure" pace, repeat first 2 steps.
5. Empty vehicles have the quality braking. True or fake? - ANS-FALSE. The brakes, tires,
springs, and shock absorbers on heavy automobiles are designed to work quality while
the car is fully loaded. Empty vehicles require extra preventing distances because an
empty car has much less traction.
6. For other tires? - ANS-2/32 inch
7. Front wheel brakes are top for beneath all conditions. True or False? - ANS-TRUE
8. How can you test slack adjusters? - ANS-Use gloves and pull tough on the slack
adjuster, if the slack adjuster moves extra than an inch, it needs adjusting.
9. How are you able to test that the spring brakes come on routinely? - ANS-Continue to
fan off the air strain with the aid of stepping on and off the brake pedal to reduce tank
pressure. The tractor safety valve and parking brake valve must close (pop out) on a
tractor-trailer combination and single car sorts whilst the air strain falls to the producer's
specification (20-forty psi). This will purpose the spring brakes to return on.
10. How are you able to check the low pressure caution signal? - ANS-Shut the engine off
when you have sufficient air stress in order that the low strain caution sign is not on. Turn
the electrical electricity on and step on and stale the brake pedal to reduce air tank
pressure. The low air stress warning signal need to come on before the strain drops to
less than 60 psi within the tank (or tank with the bottom air pressure, in dual air
systems).
11. How do antilock brakes help you? - ANS-Help you keep away from wheel lock up and
keep control.
12. How do you brake when you force a tractor-trailer combination with ABS? - ANS-Use
simplest the braking force important to stop thoroughly and live in control.
13. How do you check for leaks in hoses? - ANS-Look for puddles at the floor, or dripping
fluids on the bottom of the engine/transmission or look into hoses for situation and leaks.
14. How do you check hydraulic brakes. - ANS-Pump the brake pedal 3 instances, then
preserve it down for five seconds. The brake pedal must now not circulate in the course
of the five seconds. Check that the caution buzzer or lighting are off.
15.
, 16. If prepared with a hydraulic brake reserve gadget, with the key off, depress the brake
pedal and pay attention for the sound of the reserve gadget electric powered motor.
17. How do you take a look at oil stage? - ANS-See that oil stage is inside safe operating
variety, Level ought to be above top off mark.
18. How do you find out what number of seconds of following distance area you've got? -
ANS-1 second for each 10 feet of car period underneath 40 mph, over forty mph upload
a 2d in keeping with 10 ft
19. How do you understand if your automobile has antilock brakes? - ANS-They could have
yellow malfunction lamps at the tool panels and yellow malfunction lamps at the trailers.
Dollies after 1998 are required to have a lamp at the left side
20. How do you understand in case your automobile is equipped with antilock brakes? -
ANS-If the automobile was synthetic on or after March 1, 1998.
21. How do you recognize a distracted motive force? - ANS-Watch for motors which can
waft over the lane divider traces or within their very own lane, vehicles touring at
inconsistent speeds, drivers who are preoccupied with maps, food, cigarettes, cellular
phones, or other gadgets, drivers who appear to be worried in conversations with their
passengers.
22. How do you use in-car communications system carefully? - ANS-When viable, pull off
the road in a safe, legal location when making/receiving a call on communication system,
if possible turn off the mobile telephone until you reach your destination, function the cell
smartphone in easy reach, pre-program numbers into your mobile phone, if you have to
area a name pull off the road to a secure avenue ( do not location a name whilst you're
using), preserve conversations brief, do now not use the gadget when drawing close
places with heavy traffic, or server climate conditions, do no longer try to type or
examine messages for your satellite device even as driving.
23. How far beforehand does the manual say you need to look? - ANS-12 to 15 seconds
24. How is Gross Combination Weight Rating exceptional from Gross Combination Weight?
- ANS-The GCWR is the most GCW unique by way of the producer for a particular
combination of automobiles plus its load, whereas the GCW is the overall weight of a
powered unit, plus trailer(s), plus the cargo.
25. How long does it take for an average tractortrailer unit to clear a double music? -
ANS-More than 15 seconds
26. How regularly ought to you stop while on the street to check your shipment? -
ANS-Within the first 50 miles after starting a trip.
27. How frequently need to you drain air tanks? - ANS-After every running day.
28. If a tire blows out, you ought to placed the brakes on hard to forestall quick. True or
false? - ANS-FALSE. Braking whilst a tire has failed could purpose lack of control.
29. If stopped on a hill, how are you going to begin transferring without rolling back? -
ANS-partially engage the take hold of earlier than you take your foot off the brake,
placed on the parking brake every time essential to hold from rolling again
30. If you're away from your car only a quick time, you do not need to apply the parking
brake. True or False? - ANS-FALSE
31. If you are driving a 30-foot vehicle at 55 MPH, what number of seconds of following
distance need to you permit? - ANS-Five
