Doubles and triples endorsement CDL

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When you inspect a set of couples doubles and triples make sure the pintle hook's are ?
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Terms in this set (46)
When you inspect a set of couples doubles and triples make sure the pintle hook's are ?
Latched
Some large trucks have convex or spot mirrors these mirrors ?
Make things look smaller and farther away than they really are
For couples doubles and triples the correct position for converter dolly air tanks for petcocks is ?
Closed
When pulling trailers ?
Only the shut off valves at the rear of the last trailer should be close
When you drive a set of double or triple trailers you need more space because they ?
Cant be stopped or turn quickly
What may happen if the pintle hook is unlocked with the dolly still under the second trailer ?
The dolly tow bar may fly up
Which of these statements is true about quick steering movements with doubles or triples ?
Doubles or triples turn over more easily than other combination of Vehicles
When testing the coupling of doubles trailers the landing gear or the rear trailer should be ?
Slightly raised
Which statement is true ?
When coupling doubles and triples be sure the pintle eye of the dolly is place in the pintle hook of the trailer
You cannot avoid driving through deep or flowing water you should not ?
Drive through quickly
When uncoupling the rear semi trailer you should lower the converter dolly landing gear ?Enough to remove some of the weight from the dollyWhen driving a truck with more than one trailer which trailer should be first behind a tractor ?The heaviestConverter dollies are used to connect ?A tractor trailer combination or another trailerA converter dolly is still under the second trailer when you unlock the pintle hook what is likely to happen ?The dolly towbar may fly upWhich action is not good to do when driving on slippery roads ?Use the engine break or speed retarderHow can you be sure you supply air to a second trailer ?Go to the rear of the second trailer and open the emergency line shut offWhich of the statements is true about emergency steering ?A moved to the right will still be best if you have traffic on both sides of your vehicleWhen driving 100 foot twin trailer combination at 50 mph under good road conditions keep at least - Seconds of space ahead of you ?11The best way to stop any skid is to ?Restore traction to the tiresWhen you inspect a set of coupled doubles and triples make sure the pintle hook's are ?LatchedWhich statement is true about seeing a head ?Good drivers shift their attention back and forth near and fourDuring the day driving on the slippery road what does the commercial driver handbook say about how much space you should keep ahead of your truck ?Allow much more space than is needed for ideal driving conditionsYou can release the dolly brakes by ?Opening the air tank petcockyou want to lock your combination to a second trailer that has no spring brakes to do this without wheel chocks you should ?charge the trailer air tank and disconnect the emergency lineYou are driving with the set of doubles trailers u need to use your brake soon to avoid a crash for emergency braking you should use ?Control or stabbed brakingWhich of the statements is true about speed management and breaking ?You need at least four times as much stopping distance at 40 mph as it 20 mphFor coupled doubles and triples trailers all of the converter dolly shut off valve should be ?Open except the one connected to the rear trailer should be closedWhen Coupling the rear semi trailer you should lower the converter dolly landing gear ?Enough to remove some of the weight from the dollyWith the hand valve on you should test the trailer brakes by opening the service line now at the rear of the rig which should you hear ?Air escape from the open valveBefore you can supply air to the air tanks of the second trailer you need to position the shut off valve in which of the following ways ?Open at the rear of the first trailer close at the rear of the secondTo uncouple the rear trailer in a set of doubles the shut off valve at the rear of the front trailer should be ?ClosedYou are driving at night and need to dim your lights for traffic for Goodspeed management you should ?Slow downWhich statement is true about checking your mirrors ?Use the mirrors to look for tire firesWhen driving 100 foot twin trailer combination at 50 mph under good road conditions keep at least - Seconds of space ahead ?11The best way to stop any skid is to ?Resort traction to the tiresAfter supply air to the tractor air tank you charge the trailer Tank by ?Pushing in the air supply knob or vauleWhich of these staments about driving a tractor with doubles trailers is true ?Drivers should allow more space in front of their vehicle combinationThe landing gear is up and the trailer is resting on the tractor be sure there is enough clearance between ?The rear of the tractor frame and the landing gearAfter you charge the trailer tank you should ?Make sure the trailer brakes are working properlyEmpty trucks ?May have poor tractionYou're driving a set of doubles and a set of wheels lock which of the statements is most likely to occur ?The trailer will jackknifeThe safest way to keep brakes from getting too hot while going downhill is to ?Use the braking effect of the engine to control speedWhich of these are the correct position for shut off valves in doubles and triples ?Open for the rear of the front trailerWhen driving a truck with double or triples trailers requires a driver to ?leav more following distance then for smaller vehiclesA converter Dolly has ?A separate air supply tankIf you want to couple the second trailer to your combination vehicle secure it by using the ?Trailer emergency airbrakes