Doubles and triples endorsement CDL

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 dolly

When driving a truck with more than one trailer which trailer should be first behind a tractor ?

The heaviest

Converter dollies are used to connect ?

A tractor trailer combination or another trailer

A converter dolly is still under the second trailer when you unlock the pintle hook what is likely to happen ?

The dolly towbar may fly up

Which action is not good to do when driving on slippery roads ?

Use the engine break or speed retarder

How 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 off

Which 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 vehicle

When driving 100 foot twin trailer combination at 50 mph under good road conditions keep at least - Seconds of space ahead of you ?

11

The best way to stop any skid is to ?

Restore traction to the tires

When you inspect a set of coupled doubles and triples make sure the pintle hook's are ?

Latched

Which statement is true about seeing a head ?

Good drivers shift their attention back and forth near and four

During 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 conditions

You can release the dolly brakes by ?

Opening the air tank petcock

you 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 line

You 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 braking

Which 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 mph

For 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 closed

When Coupling the rear semi trailer you should lower the converter dolly landing gear ?

Enough to remove some of the weight from the dolly

With 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 valve

Before 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 second

To uncouple the rear trailer in a set of doubles the shut off valve at the rear of the front trailer should be ?

Closed

You are driving at night and need to dim your lights for traffic for Goodspeed management you should ?

Slow down

Which statement is true about checking your mirrors ?

Use the mirrors to look for tire fires

When driving 100 foot twin trailer combination at 50 mph under good road conditions keep at least - Seconds of space ahead ?

11

The best way to stop any skid is to ?

Resort traction to the tires

After supply air to the tractor air tank you charge the trailer Tank by ?

Pushing in the air supply knob or vaule

Which of these staments about driving a tractor with doubles trailers is true ?

Drivers should allow more space in front of their vehicle combination

The 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 gear

After you charge the trailer tank you should ?

Make sure the trailer brakes are working properly

Empty trucks ?

May have poor traction

You're driving a set of doubles and a set of wheels lock which of the statements is most likely to occur ?

The trailer will jackknife

The safest way to keep brakes from getting too hot while going downhill is to ?

Use the braking effect of the engine to control speed

Which of these are the correct position for shut off valves in doubles and triples ?

Open for the rear of the front trailer

When driving a truck with double or triples trailers requires a driver to ?

leav more following distance then for smaller vehicles

A converter Dolly has ?

A separate air supply tank

If you want to couple the second trailer to your combination vehicle secure it by using the ?

Trailer emergency airbrakes