COMBINATION

Question 1

WHAT IS THE NORMAL RANGE AT WHICH THE TRAILER AIR SUPPLY KNOB WILL POP OUT?

Answer 1

20-45 PSI

Question 2

WHICH OF THE FOLLOWING COULD HAPPEN IF YOU TRY TO COUPLE WHEN THE TRAILER IS TOO HIGH?

Answer 2

IT MAY NOT COUPLE CORRECTLY

Question 3

WHAT IS THE PROPER FOLLOWING DISTANCE TIME FOR A 90 FOOT VEHICLE GOING 50 MPH?

FORMULA: 1 SEC/10 FEET OF VEHICLE + 1 SEC OVER 40 MPH*

Answer 3

10 SECONDS

Question 4

WHICH OF THE FOLLOWING IS THE DEFINITION OF “OFFTRACKING”?

Answer 4

HOW REAR WHEELS FOLLOW A DIFFERENT TRACK THAN FRONT WHEELS IN A TURN

Question 5

WHAT DOES THE TRAILER AIR SUPPLY CONTROL DO?

Answer 5

BY PUSHING IT IN, YOU SUPPLY THE TRAILER WITH AIR

Question 6

THE TWO THINGS MOST IMPORTANT FOR PREVENTING A ROLLOVER WHEN DRIVING A COMBINATION VEHICLE ARE:

Answer 6

KEEPING CARGO NEAR THE GROUND AND DRIVING SLOWLY AROUND TURNS

Question 7

WHICH OF THE FOLLOWING IS NOT PART OF INSPECTING THE FIFTH WHEEL?

Answer 7

MAKING SURE THE CRANK HANDLE IS BOTH IN PLACE AND SAFELY SECURE

Question 8

WHERE WOULD YOU FIND THE SHUT OFF VALVES?

Answer 8

IN THE REAR OF THE TRAILER

Question 9

WHAT IS THE POINT OF NOT USING THE TRAILER HAND VALVE WHILE DRIVING?

Answer 9

YOU WILL MAKE THE TRAILER SKID

Question 10

WHICH OF THE FOLLOWING MAKES A ROLLOVER MORE LIKELY?

Answer 10

DRIVING QUICKLY AROUND TURNS

Question 11

WHAT WILL HAPPEN IF AIR DOESN’T FLOW ALL THE WAY TO THE BACK?

Answer 11

YOUR BRAKES WILL NOT WORK PROPERLY

Question 12

SHOULD YOU APPLY YOUR HAND BRAKE IN ORDER TO STRAIGHTEN OUT A JACK-KNIFING TRAILER?

Answer 12

NO, BECAUSE THE TRAILER WHEELS’ BRAKES ARE WHAT CAUSED THE PROBLEM TO BEGIN WITH

Question 13

WHICH OF THE FOLLOWING IS NOT PART OF TESTING THE TRAILER SERVICE BRAKES?

Answer 13

PUSHING THE TRAILER AIR SUPPLY CONTROL IN THE EMERGENCY POSITION

Question 14

WHICH OF THE FOLLOWING SHOULD YOU DO IF YOU WANT TO BACK INTO A CURVED PATH ON YOUR DRIVER’S SIDE?

Answer 14

• USE MIRRORS ON BOTH SIDES.
• CHECK PATH CAREFULLY, BY GETTING OUT AND WALKING AROUND.
• DRIVE SLOWLY WHILE YOU ARE BACKING.

Question 15

WHICH OF THE FOLLOWING CONTROLS AIR IN THE SERVICE LINE?

Answer 15

BOTH THE HAND AND FOOT BRAKE

Question 16

HOW MUCH MORE LIKELY IS THE FINAL TRAILER OF A TRIPLE TO ROLLOVER, VERSUS A REGULAR FIVE AXLE TRACTOR TRAILER

Answer 16

3.5 TIMES

Question 17

WHICH OF THE FOLLOWING IS NOT A PART OF INSPECTING THE FIFTH WHEEL?

Answer 17

CHECKING THE AREA AROUND THE VEHICLE

Question 18

WHICH SIDE OF THE VEHICLE SHOULD BACK TOWARDS IF YOU MUST BACK ALONG A CROOKED PATH ?

Answer 18

DRIVERS SIDE

Question 19

THE PURPOSE OF USING CHOCKS WHEN PARKING A VEHICLE THAT DOES NOT POSSESS SPRING BRAKES IS:

Answer 19

TO KEEP THE TRAILER FROM MOVING

Question 20

WHICH OF THE FOLLOWING IS NOT A LOCATION WHERE YOU SHOULD DRIVE SLOWLY TO AVOID A ROLLOVER?

Answer 20

STRAIGHT HIGHWAY LANE

Question 21

WHICH OF THE FOLLOWING OFFTRACKS THE MOST ?

Answer 21

THE REAR MOST TRAILER

Question 22

WHICH OF THE FOLLOWING IS A TYPE OF VEHICLE THAT MOST OFTEN GETS STUCK ON RAILROAD CROSSINGS?

Answer 22

• LOW SLUNG UNIT, LIKE A CAR CARRIER
• LOW SLUNG UNIT, LIKE A MOVING VAN
• A TRACTOR WITH A SINGLE AXLE, PULLING A LONG TRAILER WHILE ITS LANDING GEAR IS SET FOR A TANDEM-AXLE TRACTOR

Question 23

WHICH OF THE FOLLOWING IS NOT PART OF RAISING YOUR LANDING GEAR?

Answer 23

USING THE HIGH RANGE GEAR, IF YOU HAVE IT, BEGIN THE PROCESS OF RAISING THE LANDING GEAR

Question 24

WHICH OF THE FOLLOWING IS MOST LIKELY TO ROLLOVER?

Answer 24

THE REAR TRAILER OF THE TRIPLE

Question 25

WHICH OF THE FOLLOWING IS NOT A PURPOSE OF THE EMERGENCY AIR LINE?

Answer 25

TO SUPPLY AIR TO RELAY VALVES THAT HELP THE FOOT BRAKE TO OPERATE MORE QUICKLY