| 855 What three methods can you use to secure a second trailer before coupl... Answer611 What is a converter dolly used for?... Answer533 On older vehicles there may be a lever, rather than a knob, for the tr... Answer483 To uncouple the converter dolly you should:... Answer482 When the emergency line loses pressure, what happens to the tractor pr... Answer441 To uncouple the converter dolly, you should:... Answer383 When coupling twin trailers, you should release the dolly brakes by:... Answer382 What happens when you push in the trailer air supply control knob and ... Answer373 To uncouple the converter dolly, you should:... Answer371 Which valves on the service line on the trailer connect the trailer ai... Answer368 The stopping distance for a tractor trailer traveling 55 mph on dry pa... Answer361 A drive-wheel skid when pulling doubles could result in a jackknife wh... Answer355 Which of these statements about seeing ahead is true?... Answer332 When coupling doubles, start by:... Answer300 What is one purpose of the emergency air line?... Answer298 Which valve keeps air in the tractor or truck if the trailer breaks aw... Answer286 When coupling the rear trailer, the correct trailer height is:... Answer281 The best way to stop all skids is to:... Answer269 To test the trailer service brakes you should:... Answer265 When inspecting doubles, the shut off valves at the rear of the traile... Answer262 Do all converter dollies have spring brakes?... Answer242 To connect the glad hands, the tow seals are pressed together with the... Answer239 If you want to couple a second trailer to your combination vehicle, se... Answer238 Inspect a converter dolly as if it were:... Answer236 Do trailers made before 1975 have spring brakes?... Answer220 You are doing a walk around inspection of a double or triple trailer r... Answer211 You should test your tractor protection valve to avoid:... Answer208 When can you use the trailer hand valve for parking a combination vehi... Answer207 Coupling and uncoupling methods are the same for more common tractor-t... Answer198 Which of these statements about managing space to the sides is true?... Answer197 To test the trailer service brakes, you should:... Answer196 To test the trailer service brakes you should:... Answer193 What are two reasons why doubles and triples take up more space than o... Answer191 Which of these is not a good thing to do when driving on slippery road... Answer182 The best way to keep brakes from overheating while going down a steep ... Answer175 When driving doubles or triples how whould they be driven to avoid rol... Answer167 What happens to the trailer emergency brakes if there is a loss of pre... Answer166 What is a reason why there is more chance of skids with doubles and tr... Answer164 What is it called when the rear wheels follow a different path than th... Answer159 When connecting the converter dolly to the rear trailer, you should re... Answer143 Which of these will result in the best control on curves?... Answer135 Should you unhook the pintle hook with the converter dolly still under... Answer129 You should use different methods for uncoupling second and third trail... Answer123 When steering to avoid a crash while pulling doubles, remember to:... Answer118 For the safest handling on the road when pulling doubles and triples, ... Answer117 Doubles and triples take up more space and are longer than other comme... Answer116 If the tractor protection valve closes, letting air out of the trailer... Answer114 If your trailer has started to skid, what should you do to get tractio... Answer106 To check for air flow to the last trailer:... Answer105 Which of these statements about handling of doubles and triples is tru... Answer99 In normal driving, should you ever use the trailer hand valve before t... Answer92 Why should you lock the glad hands to each other when you are not towi... Answer90 Which is true of empty trucks?... Answer87 If a converter dolly is still under the second trailer and you unlock ... Answer86 If the air lines on a truck are color coded, which lines are blue?... Answer86 When pulling triple trailers, always put the heaviest trailer:... Answer76 It is dangerous to unlock the pintle hook with the dolly still under t... Answer73 If the spring brakes do not release when you push the trailer air supp... Answer67 Doubles and triples are not as likely to turn over as are other combin... Answer49 In allowing more space, what should you do before entering or crossing... Answer49 It is alright to not check all the critical parts when doing a pretrip... Answer35 The dolly tow bar may fly up if you unlock the pintle hook with the co... Answer33 When pulling triple trailers, which unit is more likely to roll over:... Answer22 There are more things to inspect on a combination vehicle than on a si... Answer21 Special care should be taken when pulling two or three trailers becaus... Answer21 To uncouple double trailers, you should park your rig:... Answer20 When pulling triple trailers, which unit is more likely to roll over?... Answer17 You should do a walk around inspection when preparing to pull doubles ... Answer14 Is it important to be careful when driving doubles and triples?... Answer |
