Question | Answer |
Which of these statements about emergency steering is true? | If you have traffic on both sides of your vehicle and something is blocking your lane, a move to the right is still the best. |
The converter dolly air tank valve on coupled double/triple trailers should be: | Closed. |
To check if the converter dolly is securely coupled to the rear trailer you should: | Pull gently against the pin of the second trailer. |
You are visually checking the coupling of a converter dolly to the rear trailer. How much space should be between the upper and lower fifth wheel? | None. |
Which of these is NOT a good thing to do when driving on slippery roads? | Use the engine brake or the speed retarder. |
When testing the coupling of the double trailer the landing gears of the rear trailer should be: | Slightly raised. |
You must drive through deep or flowing water. You should not: | Keep gentle pressure on the brakes while going through the water and for a short distance after coming out. |
When you turn with the tractor/triple trailer combination the wheels that offtrack (cheat) the most are: | The wheels of the last trailer. |
Before you can supply air to the air tanks of a second trailer you need to: | Open the shut-off valves at the rear of the first trailer and close the shut-off valves at the rear of the second trailer. |
What is likely to happen if the pintle hook is unlocked with the dolly still unders the second trailer? | The dolly tow bar may fly up. |
When does the driver manual say you should disable the steering axle brake? | Never. |
Which of the statements about quick steering movements and doubles/triples are true? | Doubles/triples flip flop over from quick steering more easily than many vehicles. |
Converter dollies: | Often do not have spring brakes. |
You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should: | Supply air to the trailer with the tractor then disconnect the emergency line. |
Which of these statements about managing space to the sides is true? | You should avoid travelling next to others when possible. |
When driving a truck with more than one trailer, which trailer should be first behind the truck? | The heaviset. |
You are driving at night and you must dim headlights for traffic. Good speed management says you should: | Slow down. |
Empty truck: | May have poor traction due to bouncing and wheel lockup. |
Which of these statements about the handling of doubles and triples is true? | A sudden movement with thw steering wheel can result in a tipped over rear trailer. |
You are doing a walkaround inspectionof a double or triple trailer irg. You should be sure the converter dolly air tank drain vaves are ______and the pintl hook is ______. | Closed ; latched. |
During normal operation the brakes of the double/triple trailer are controlled by: | Foot pedal. |
Which of these will result in the best control of curves? | Slow to the safe speed before entering, then accelerate slightly through curves. |
The best way to stop any skid is to: | Restore traction to the tires. |
With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. When you do this, you should hear: | Air escape from the open valve. |
You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should: | Use controlled or stab braking. |
You are drivinga set of doubles and a set of trailer wheels goes into a skid. Which of these is most likely to occur? | You will have a trailer jackknife. |
You are driving on a slippery road during the day. What does the draver manual say about how much space you should keep ahead of your truck? | Allow much more space than is needed for ideal driving conditions. |
If you want to couple a second trailer to your combination vehicle, secure it by using: | Thr trailer spring bakes and wheel chocks. |
You are driving a 100-foot truck with double trailers at 50mph. The road is dry and visibilty is good. You should keep at least _____seconds space ahead of you? | 11 |
Some large trucks have curved (convex or spot) mirrors. These mirrors: | Make things seem smaller and further away than they really are. |
How can you be sure you supplied air to a second trailer? | Go to the rear of the second trailer and open the emergency line shut-off. |
You should check trailer height before connecting a converter dolly to a second or third trailer. The trailer height is right when: | The trailer will be raised slightly when the converter dolly is backed under it. |
The best way to keep brakes from getting too hot while going down long grades is to: | Go slow and use only light, steady pressure on the brakes. |
You are driving a 100-foot truck with double trailers at 30mph. The road is dry and visibility is good. You should keep at least _______ seconds of space ahead of you? | 10 |
The crack-the-whip effect that troubles trucks with trailers is most likely to cause a tip over where: | The rear trailer of the triple. |