SECTION 1: COMMERCIAL TEST QUESTIONS AND ANSWERS

SECTION 1: COMMERCIAL TEST
QUESTIONS AND ANSWERS



1. The safest method for using in-vehicle communications equipment is: - ans-
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pull off the road in safe, legal place to use the equipment
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2. which of these systems should receive extra attention during a winter weather inspection
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? - ans-exhaust
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3. a good indication that ice is forming on the road way when: - ans-
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your outside mirrors have ice on them
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4. when confronted by an aggressive driver the very first thing you should do is - ans-
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make every attempt to get out of their way
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5. which of these happens when fire blows out at highway speeds - ans-a vibrating feeling
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6. which of these statements is true about read drive wheel braking skids - ans-
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trailer can push the towing vehicle sideways
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7. drivers of trucks and truck tractors with cargo mush check that the cargo is well secured
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within the first _ miles do a trip - ans-50
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8. the one reason that dry bulk tanks require special care is - ans-the load can shift
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9. if you do not have a CB radio what is the first thing you should do at a collision scene -
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ans-protect the area
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10. which of the following statements about driving in fog is true - ans-
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assume that the fog will become thicker after you enter it
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11. stab braking shoukd not be used on vehicles with - ans-anti lock brakes
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12. you nah get hung up on a railroad track when - ans-the tracks have a steep approach
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13. which of these is a good thing to remember when crossing or entering traffic with heavy
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vehicle - ans-heavy vehicles need larger gaps in traffic than cars
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,14. when you are passing another vehicle pedestrian or bicyclist you should assume that th
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ey - ans-may move into your traffic lane
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15. which statement is true - ans-
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many heavy vehicle collisions occur between mid night and 6AM
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16. an anti lock breaking system is - ans-an addition to your normal brakes
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17. which of these statements is true about notifying authorities after a collision occurs -
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ans-
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if you have a CB radio or a cellular phone use it to notify police before exiting your vehicle
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18. which of the following is not characteristic of a front tire failure - ans-vehicle fishtails
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19. the amount of brake pressure you need to stop your vehicle depends on - ans-
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the vehicles speed and how quickly you want to stop
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20. it takes a typical tractor trailer at least _ seconds to clear a single track railroad highway
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grade crossing - ans-14 sd sd sdsd




21. when driving on a snow packed road you should reduce your speed by at least - ans-
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1/2

22. which of these statements is true about an inspection or suspection components - ans-
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axle mounts should be checked where they are secured on the vehicle frame and axle
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23. in rear tire failure dual rear tires eill - ans-usually prevent fishtail
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24. when confronted by an aggressive driver the first thing you should do is - ans-
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make any attempt to get out to their way
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25. after starting the engine the - ans-
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coolants temperature gauge should begin a gradual rise to normal
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26. when do strong winds affect driving the most - ans-when exiting tunnels
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27. having antilock brakes on only the tractor will - ans-
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give you more control over the vehicle when braking
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28. drivers if trucks and truck tractors with cargo must check that the cargo is well secured
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with the first _miles - ans-50
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29. escape ramps - ans-
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should be used by any driver who loses braking power on a vehicle
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, 30. if the antilock braking system is not working you should - ans-
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drive normally but get the system serviced soon
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31. what should you do before driving in the mountains - ans-
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know that escape ramp locations on your route
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32. when driving in cold weather your tire tread should - ans-
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provide enough traction to steer and push the vehicle through snow
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33. break fade can be - ans-caused by the brakes getting very hot
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34. you are checking your steering and exhaust systems in a pre trip inspection which of th
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ese problems should be - ans-fixed before the vehicle is driven
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35. which of these statements is true about brakes - ans-
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brakes absorb more heat to stop heavier vehicles
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36. bridge formulas permit - ans-
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less maximum axle weight for axels that are close together
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37. which of these statements is true about causes of vehicle fires - ans-
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poor trailer ventilation can cause flammable cargo to catch on fire
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38. truck escape ramps - ans-help avoid damage to vehicles
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39. which of these is true about hours of service - ans-
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you should balance your hours of service with enough sleep to keep you alert
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40.which of the following id true about preventing fatigue on a long trip - ans-
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stop periodically for test and exercise
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41) Hydroplanning - ans-is more likely it tire pressure is low
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42. is high it these statements is true about cargo loading - ans-
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state laws dictate legal weight limits
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43. which of these items is not checked in a pre trip inspection - ans-
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amount of fuel in the vehicle sd sd sd sd sd




44. the commercial driver handbook suggests several things to do when you pass a vehicle
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which of these is not one of them - ans-assume the other driver does not see you
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45. you can see this sign on a vehicle ahead of you what does the sign mean? - ans-
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slow moving vehicle
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