ILLINOIS CDL DRIVERS TEST QUESTIONS WITH CORRECT ANSWERS

ILLINOIS CDL DRIVERS TEST QUESTIONS WITH CORRECT ANSWERS “SAFETY - CORRECT ANSWER What is the most important reason for doing a vehicle inspection?" "TIRES, BRAKES, LIGHTS AND REFLECTORS, BRAKE AND ELECTRICAL CONNECTIONS TO TRAILER, TRAILER COUPLING DEVICES, CARGO SECUREMENT DEVICES. - CORRECT ANSWER What things should you check during a trip?" "STOP - CORRECT ANSWER What's the most important hand signal that you and the helper should agree on?" "BEFORE STARTING DOWN A HILL AND BEFORE ENTERING A CURVE. - CORRECT ANSWER What are the two special conditions where you should downshift?" "YOU CAN SELECT A LOW RANGE TO GET GREATER BRAKING WHEN GOING DOWN GRADES. - CORRECT ANSWER When should you downshift automatic transmissions?" "FALSE - CORRECT ANSWER Retarders keep you from skidding when the road is slippery. True or False?" "RPM AND MPH - CORRECT ANSWER What are the two ways to know when to shift?" "12-15 SECONDS - CORRECT ANSWER How far ahead does the manual say you should look?" "VEHICLES COMING ONTO THE HIGHWAY, INTO YOUR LANE OR TURNING AND BRAKE LIGHTS. - CORRECT ANSWER What are two main things to look for ahead?" "CHECK YOUR MIRRORS. - CORRECT ANSWER What's your most important way to see the sides and rear of your vehicle?" "SIGNAL YOUR INTENTIONS. - CORRECT ANSWER What does "communicating" mean in safe driving?" "10 FEET, 100 FEET, 200 FEET TOWARD THE APPROACHING TRAFFIC. - CORRECT ANSWER Where should your reflectors be placed when stopped on a divided highway?" "PULL OFF THE ROAD, POSITION THE CELL PHONE WITHIN EASY REACH, KEEP CONVERSATIONS SHORT. - CORRECT ANSWER How do you use in-vehicle communications equipment cautiously?" "APPLY THE BRAKES JUST HEARD ENOUGH TO FEEL A DEFINITE SLOWDOWN, WHEN YOUR SPEED HAS BEEN REDUCED TO ABOUT 5 MPH BELOW YOUR "SAFE" SPEED, RELEASE THE BRAKES, WHEN YOUR SPEED HAS INCREASED TO YOUR "SAFE" SPEED, REPEAT THE ABOVE. - CORRECT ANSWER Describe the proper braking technique when going down a long, steep downgrade." "LOW SLUNG UNITS AND SINGLE-AXLE TRACTOR PULLING A LONG TRAILER WITH ITS LANDING GEAR SET TO ACCOMMODATE A TANDEM-AXLE TRAILER. - CORRECT ANSWER What type of vehicles can get stuck on a railroad-highway crossing?" "15 SECONDS - CORRECT ANSWER How long does it take for a typical tractor-trailer unit to clear a double track?" "TRUE - CORRECT ANSWER Stopping is not always the safest thing to do in an emergency. True or False?" "IF A DRIVER IS COMING AT YOU, THEY MAY REALIZE WHAT HAS HAPPENED AND THEIR NATURAL RESPONSE IS TO STEER BACK TO THEIR LANE. - CORRECT ANSWER What are some advantages of going right instead of left around an obstacle?" "MADE TO STOP RUNAWAY VEHICLES WITHOUT INJURING PEOPLE. - CORRECT ANSWER What is an "escape ramp?"" "FALSE - CORRECT ANSWER If a tire blows out, you should put the brakes on hard to stop quickly. True or False?" "THERE WILL BE A YELLOW ABS MALFUNCTION LAMP. - CORRECT ANSWER How do you know if your vehicle has anti-lock brakes?" "BRAKE NORMAL JUST AS YOU ALWAYS DO. - CORRECT ANSWER What is the proper braking technique when driving a vehicle with anti-lock brakes?" "INSPECTING YOUR CARGO, WEIGHT AND BALANCE, SECURING CARGO, CARGO NEEDING SPECIAL ATTENTION. - CORRECT ANSWER What four things related to cargo are drivers responsible for?" "AFTER YOU HAVE DRIVEN FOR 3 HOURS AND EVERY BREAK YOU TAKE. - CORRECT ANSWER How often must you stop while on the road to check your cargo?" "TRUE. - CORRECT ANSWER All vehicles with air brakes must have a low air pressure warning signal. True or False?" "POWERFUL SPRINGS ARE HELD BACK BY AIR PRESSURE. - CORRECT ANSWER What are spring brakes?" "TRUE - CORRECT ANSWER Front-wheel brakes are good under all conditions. True or False?" "IT COULD MAKE THE TRAILER SKID. - CORRECT ANSWER Why should you not use the trailer hand valve while driving?" "CONTROL THE TRACTOR PROTECTION VALVE. YOU PUSH IT IN TO SUPPLY THE TRAILER WITH AIR AND PULL IT OUT TO SHUT THE AIR OFF AND PUT ON THE TRAILER EMERGENCY BRAKES. - CORRECT ANSWER Describe what the trailer air supply control does." "NO - CORRECT ANSWER Should a tank vehicle take curves, on-ramps or off-ramps at the posted speed limits?" "THEY HAVE NOTHING INSIDE TO SLOW DOWN THE FLOW OF LIQUID. BACK-AND-FORTH SURGE IS VERY STRONG. - CORRECT ANSWER How are smooth bore tankers different to drive than those with baffles?" "THE AMOUNT THE LIQUID WILL EXPAND IN TRANSIT, THE WEIGHT OF THE LIQUID, LEGAL WEIGHT LIMITS. - CORRECT ANSWER What three things determine how much liquid you can load?" "LIQUIDS EXPANDS AS THEY WARM AND YOU MUST LEAVE ROOM FOR THE EXPANDING LIQUID. - CORRECT ANSWER What is outage?" "CLASS 1 (EXPLOSIVES), 2.1 (FLAMMABLE GAS), 3 (FLAMMABLE LIQUIDS), 4 (FLAMMABLE SOLIDS), 5 (OXIDIZERS). - CORRECT ANSWER Around which hazard classes must you never smoke?" "1 (EXPLOSIVES), 2.1 (FLAMMABLE GAS), 3 (FLAMMABLE LIQUIDS). - CORRECT ANSWER Which three hazard classes should not be loaded into a trailer that has a heater/air conditioner unit?" "NO, THE LINER MUST BE EITHER NON-METALLIC OR NON-FERROUS METAL. - CORRECT ANSWER Should the floor liner required for Division 1.1 or 1.2 materials be stainless steel?" "YOU CANNOT LOAD THEM TOGETHER IN THE SAME CARGO SPACE. - CORRECT ANSWER At the shipper's dock you are given a paper for 100 cartons of battery acid. You already have 100 pounds of dry Silver Cyanide on board. What precautions do you have to take?" "CLASS 7 (RADIOACTIVE MATERIALS) - CORRECT ANSWER Name a hazard class that uses transport indexes to determine the amount that can be loaded in a single vehicle." "BULK PACKAGING PERMANENTLY ATTACHED TO A VEHICLE. - CORRECT ANSWER What are cargo tanks?" "IT IS NOT PERMANENTLY ATTACHED TO A VEHICLE. - CORRECT ANSWER How is a portable tank different from a cargo tank?" "TURN IT OFF BEFORE UNHOOKING HOSES. - CORRECT ANSWER Your engine runs a pump used during delivery of compressed gas. Should you turn off the engine before or after unhooking hoses after delivery?" "AT THE START OF EACH TRIP AND WHEN YOU PARK. - CORRECT ANSWER If your placarded trailer has dual tires, how often should you check the tires?" "AN APPROVED PLACE FOR PARKING UNATTENDED VEHICLES LOADED WITH EXPLOSIVES. - CORRECT ANSWER What is a safe haven?" "5 FEET - CORRECT ANSWER How close to the traveled part of the roadway can you park with Division 1.2 or 1.3 materials?" "300 FEET - CORRECT ANSWER How close can you park to a bridge, tunnel or building with the same load?" "A FIRE EXTINGUISHER WITH A UL RATING OF 10 B:C OR MORE. - CORRECT ANSWER What type of fire extinguisher must placarded vehicles carry?" "YES - CORRECT ANSWER You are hauling 100 pounds of Division 4.3 (dangerous when wet) materials. Do you need to stop before a railroad-highway crossing?" "PARK IT, SECURE THE AREA, STAY THERE, SEND SOMEONE ELSE FOR HELP. - CORRECT ANSWER At a rest area you discover your hazardous materials shipments slowly leaking from the vehicle. There is no phone around. What should you do?" "A GUIDEBOOK FOR FIREFIGHTERS, POLICE, AND INDUSTRY WORKERS ON HOW TO PROTECT THEMSELVES AND THE PUBLIC FROM HAZARDOUS MATERIALS. AND A GUIDEBOOK FOR TRUCK DRIVERS, DOCK WORKERS, AND SHIPPERS ON HOW TO PROTECT THEMSELVES AND THE PUBLIC FROM HAZARDOUS MATERIALS. - CORRECT ANSWER What is the Emergency Response Guide (ERG)?" "STEERING WHEEL, STEERING ARMS, STEERING WHEEL SHAFT, TIE ROD, STEERING GEAR BOX, PITMAN ARM, DRAG LINK, STEERING RING KNUCKLE, SPINDLE. - CORRECT ANSWER Name some key steering system parts." "SPRING HANGERS THAT MOVE, CRACKED OR BROKEN SPRING HANGERS, MISSING OR BROKEN LEAVES, LEAKING SHOCK ABSORBERS, TORQUE ROD ARM - CORRECT ANSWER Name some suspension system defects." "FIRE EXTINGUISHER, SPARE FUSES, WARNING DEVICES (TRIANGLES) - CORRECT ANSWER What three kinds of emergency equipment must you have?" "FRONT 4/32 REAR 2/32 - CORRECT ANSWER What is the minimum tread depth for front tires?For other tires?" "CONDITION OF FRONT AXLE, STEERING SYSTEM, WINDSHIELD, LIGHTS AND REFLECTORS - CORRECT ANSWER Name some things you should check on the front of your vehicle during the walk-around inspection." "NOT LEAKING - CORRECT ANSWER What should wheel bearing seals be checked for?" "3 - CORRECT ANSWER How many red reflective triangles should you carry?" "PUMP BREAK PEDAL 3 TIMES, THEN APPLY FIRM PRESSURE TO PEDAL AND HOLD FOR 5 SECONDS. THE PEDAL SHOULD NOT MOVE. - CORRECT ANSWER How do you test hydraulic brakes for leaks?" "SO NO ONE CAN STEAL YOUR VEHICLE. - CORRECT ANSWER Why put the starter switch key in your pocket during the pre-trip inspection?" "SO YOU CAN SEE BETTER. - CORRECT ANSWER Why should you back toward the driver's side?" "PARTLY ENGAGE THE CLUTCH BEFORE YOU TAKE YOUR RIGHT FOOT OFF THE BRAKE. - CORRECT ANSWER If stopped on a hill, how can you start moving without rolling back?" "SO THEY CAN HELP YOU SEE AND SO THEY CAN CHECK YOUR BLIND SPOTS. - CORRECT ANSWER When backing, why is it important to use a helper?" "PERCEPTION, REACTION, BRAKING. - CORRECT ANSWER What three things add up to total stopping distance?" "FOUR - CORRECT ANSWER If you go twice as fast, will your stopping distance increase by two or four times?" "FALSE - CORRECT ANSWER Empty trucks have the best braking. True or False?" "TIRES LOSE CONTACT WITH THE ROAD AND HAVE LITTLE OR ON TRACTION. - CORRECT ANSWER What is hydroplaning?" "A THIN LAYER THAT IS CLEAR ENOUGH YOU CAN SEE THE ROAD UNDERNEATH. - CORRECT ANSWER What is "black ice"?" "1 SECOND FOR EACH 10 FEET OF VEHICLE GOING 40 MPH AND UNDER. ADD 1 SECOND IF GOING OVER 40 MPH. - CORRECT ANSWER How do you find out how many seconds of following distance space you have?" "4 SECONDS - CORRECT ANSWER If you are driving a 30-foot vehicle at 55 mph, how many seconds of following distance should you allow?" "FALSE - CORRECT ANSWER You should decrease your following distance if somebody is following you too closely. True or False?" "TRUE - CORRECT ANSWER If you swing wide to the left before turning right, another driver may try to pass you on the right. True or False?" "ANY ROAD CONDITION OR ROAD USER THAT IS A POSSIBLE DANGER. - CORRECT ANSWER What is a hazard?" "SO YOU CAN BE A PREPARED, DEFENSIVE DRIVER WHO WILL IMPROVE YOUR OWN SAFETY AS WELL AS THE SAFETY OF ALL ROAD USERS. - CORRECT ANSWER Why make emergency plans when you see a hazard?" "REVIEW ALL SAFETY AND USAGE FEATURES ON ANY IN-VEHICLE ELECTRONICS, PRE-PROGRAM RADIO STATIONS, CLEAR THE VEHICLE OF ANY UNNECESSARY OBJECTS, PLAN YOUR ROUTE AHEAD, ADJUST MIRRORS BEFORE TRIP. - CORRECT ANSWER What are some tips to follow so you won't become a distracted driver?" "VEHICLES THAT ARE DRIFTING IN OR OUT OF THEIR LANE, VEHICLES TRAVELING AT INCONSISTENT SPEEDS, DRIVERS WHO A PREOCCUPIED WITH MAPS-FOOD-ETC., DRIVERS WHO APPEAR TO BE INVOLVED IN CONVERSATION WITH THEIR PASSENGERS. - CORRECT ANSWER How do you recognize a distracted driver?" "AGGRESSIVE DRIVING IS SELFISH OR BOLD OR PUSHY. ROAD RAGE IS AN INTENT OF DOING HARM TO OTHERS OR PHYSICALLY ASSAULTING A DRIVER OR THEIR VEHICLE. - CORRECT ANSWER What is the difference between aggressive driving and road rage?" "GET OUT OF THEIR WAY, AVOID EYE CONTACT, DON'T REACT, REPORT IT TO THE AUTHORITIES. - CORRECT ANSWER What should you do when confronted with an aggressive driver?" "LISTEN TO "EASY LISTENING" MUSIC, DO NOT BECOME DISTRACTED, BE REALISTIC ABOUT DRIVE TIMES, GIVE OTHERS THE BENEFIT OF THE DOUBT, BE CAUTIOUS AND COURTEOUS. - CORRECT ANSWER What are some things you can do to reduce your stress before and while you drive?" "FALSE - CORRECT ANSWER You should use low beams whenever you can. True or False?" "GET SOME SLEEP. - CORRECT ANSWER What should you do before you drive if you are drowsy?" "CAUSE THE BREAKS TO BE WEAK, APPLY UNEVENLY OR GRAB. / AVOID DEEP PUDDLES OR FLOWING WATER. - CORRECT ANSWER What effects can wet brakes cause? How can you avoid these problems?" "FALSE - CORRECT ANSWER You should let air out of hot tires so the pressure goes back to normal. True or False?" "TRUE - CORRECT ANSWER You can safely remove the radiator cap as long as the engine isn't overheated. True or False?" "TOTAL WEIGHT OF VEHICLE AND CARGO, LENGTH OF THE GRADE, STEEPNESS OF THE GRADE, ROAD CONDITIONS, AND WEATHER. - CORRECT ANSWER What factors determine your selection of a "safe" speed when going down a long, steep downgrade?" "YOU MAY NOT BE ABLE TO SHIFT INTO A LOWER GEAR. - CORRECT ANSWER Why should you be in the proper gear before starting down a hill?" "HELPS YOU AVOID WHEEL LOCK UP AND MAINTAIN CONTROL. - CORRECT ANSWER How do anti-lock brakes help you?" "PROTECT THE AREA, NOTIFY AUTHORITIES, CARE FOR THE INJURED. - CORRECT ANSWER What are some things to do at an accident scene to prevent another accident?" "UNDER INFLATED TIRES AND DUELS THE TOUCH. - CORRECT ANSWER Name two causes of tire fires." "WOOD, PAPER, ORDINARY COMBUSTIBLES, FIRES IN COMBUSTIBLE METALS. - CORRECT ANSWER What kinds of fires is a B:C extinguisher not good for?" "FALSE - CORRECT ANSWER When using your extinguisher, should you get as close as possible to the fire?" "AFTER ACCIDENTS, TIRES, ELECTRICAL SYSTEMS, CARGO. - CORRECT ANSWER Name some causes of vehicle fires." "TRUE - CORRECT ANSWER Common medicines for colds can make you sleepy. True or False?" "STOP TO SLEEP, TAKE A NAP, AVOID DRUGS. - CORRECT ANSWER What should you do if you become sleepy while driving?" "FALSE - CORRECT ANSWER Coffee and a little fresh air will help a drinker sober up. True or False?" "SIGNS PUT ON THE OUTSIDE OF A VEHICLE THAT IDENTIFY THE HAZARD CLASS OF THE CARGO. - CORRECT ANSWER What is a hazardous materials placard?" "TO WARN OTHERS OF HAZARDOUS MATERIALS. - CORRECT ANSWER Why are placards used?" "NOT GETTING ENOUGH SLEEP. - CORRECT ANSWER What is "sleep debt"?" "YOUR EYES CLOSE OR GO OUT OF FOCUS, CANNOT STOP YAWNING, WANDERING OR DISCONNECTED THOUGHTS, DON'T REMEMBER DRIVING THE LAST FEW MILES, DRIFT BETWEEN LANES, TAILGATE, - CORRECT ANSWER What are the danger signals of drowsy driving?" "THE GVW IS FOR A SINGLE VEHICLE PLUS ITS LOAD. THE GCW IS FOR A SPECIFIC COMBINATION VEHICLE PLUS ITS LOAD. - CORRECT ANSWER How is Gross Combination Weight Rating different from Gross Combination Weight?" "BAD WEATHER OR IN MOUNTAINS. - CORRECT ANSWER Name two situations where legal maximum weights may not be safe." "CAUSE POOR TRACTION. - CORRECT ANSWER What can happen if you do not have enough weight on the front axle?" "1 TIE DOWN FOR EACH 10 FEET OF CARGO. - CORRECT ANSWER What is the minimum number of tie-downs for any flat bed load?" "2 - CORRECT ANSWER What is the minimum number of tie-downs for a 20-foot load?" "PROTECT PEOPLE FROM PILLED CARGO AND PROTECT CARGO FROM WEATHER. - CORRECT ANSWER Name the two basic reasons for covering cargo on an open bed." "CHECK THAT YOU DO NOT EXCEED GROSS WEIGHT AND AXLE WEIGHT LIMITS. - CORRECT ANSWER What must you check before transporting a sealed load?" "TO PREVENT FREEZING AND BRAKE FAILURE. - CORRECT ANSWER Why must air tanks be drained?" "TELL YOU HOW MUCH PRESSURE IS N THE AIR TANKS. - CORRECT ANSWER What is a supply pressure gauge used for?" "CHECK THE CERTIFICATION LABEL FOR THE DATE. ANYTHING AFTER 1998 WILL HAVE ABS. THERE WILL BE A YELLOW MALFUNCTION LAMP. - CORRECT ANSWER How do you know if your vehicle is equipped with anti-lock brakes?" "TWO SEPARATE AIR BRAKE SYSTEMS, WHICH HOUSE A SINGLE SET OF BRAKE CONTROLS. - CORRECT ANSWER What is a dual air brake system?" "HELP YOU KEEP YOUR BRAKES IN ADJUSTMENT. - CORRECT ANSWER What are the slack adjusters?" "CHOCK WHEELS, RELEASE PARKING BRAKE, USE GLOVES AND PULL HARD ON EACH SLACK ADJUSTER. - CORRECT ANSWER How can you check slack adjusters?" "AFTER YOU HAVE ENOUGH AIR PRESSURE, SHUT OFF THE ENGINE. TURN ELECTRICAL POWER ON AND STEP ON AND OFF THE BRAKE PEDAL TO REDUCE AIR TANK PRESSURE. THE WARNING SIGNAL MUST COME ON BEFORE THE PRESSURE DROPS TO LESS THAN 60 PSI IN THE AIR TANK. - CORRECT ANSWER How can you test the low pressure warning signal?" "STEP ON AND OFF THE BRAKE PEDAL TO REDUCE TANK PRESSURE. THE PROTECTION VALVE AND PARKING BRAKE VALVE SHOULD CLOSE (POP OUT). SOME VEHICLES THE AIR PRESSURE FALLS TO 20-45 PSI. - CORRECT ANSWER How can you check that the spring brakes come on automatically?" "3 POUNDS IN 1 MINUTES (SINGLE VEHICLE) 4 POUNDS IN 1 MINUTE (COMBINATION VEHICLE) - CORRECT ANSWER What are the maximum leakage rates?" "SO YOU DON'T HAVE TO RIDE THE BRAKES? - CORRECT ANSWER Why should you be in the proper gear before starting down a hill?" "EXCESSIVE HEAT - CORRECT ANSWER What factors can cause brakes to fade or fail?" "TRUE - CORRECT ANSWER The use of brakes on a long, steep downgrade is only a supplement to the braking effect of the engine. True or False?" "FALSE - CORRECT ANSWER If you are away from your vehicle only a short time, you do not need to use the parking brake. True or False?" "AT THE END OF EACH DAY OF DRIVING. - CORRECT ANSWER How often should you drain air tanks?" "AS YOU ALWAYS DO. NORMALLY. - CORRECT ANSWER How do you brake when you drive a tractor-trailer combination with ABS?" "TRUE - CORRECT ANSWER You still have normal brake functions if your ABS is not working. True or False?" "GO SLOW AROUND CURVES AND KEEP CARGO AS CLOSE TO THE GROUND AS POSSIBLE. - CORRECT ANSWER What two things are important to prevent rollover?" "LAST TRAILER. - CORRECT ANSWER When you turn suddenly while pulling doubles, which trailer is most likely to turn over?" "THE BRAKES ON THE TRAILER ARE WHAT CAUSED THE SKID IN THE FIRST PLACE. - CORRECT ANSWER Why should you not use the trailer hand brake to straighten out a jackknifing trailer?" "WHEN A VEHICLE GOES AROUND A CORNER THE REAR WHEELS FOLLOW A DIFFERENT PATH THAN THE FRONT WHEELS. - CORRECT ANSWER What is off-tracking?" "FALSE - CORRECT ANSWER When you back a trailer, you should position your vehicle so you can back in a curved path to the driver's side. True or False?" "LOW SLUNG UNITS AND SINGLE-AXLE TRACTOR PULLING A LONG TRAILER WITH ITS LANDING GEAR SET TO ACCOMMODATE A TANDEM-AXLE TRAILER. - CORRECT ANSWER What type of trailers can get stuck on railroad-highway crossings?" "IT CARRIES AIR WHICH IS CONTROLLED BY THE FOOT BRAKE ON THE TRAILER HAND BRAKE. - CORRECT ANSWER Describe what the service line is for." "SUPPLIES ARE TO THE TRAILER AIR TANKS AND CONTROLS THE EMERGENCY BRAKES ON COMBINATION VEHICLES. - CORRECT ANSWER What is the emergency air line for?" "SO IT WONT ROLL. - CORRECT ANSWER Why should you use chocks when parking a trailer without spring brakes?" "USED IN THE SERVICE AND SUPPLY AIR LINES AT THE BACK OF TRAILERS USED TO TOW OTHER TRAILERS. THEY PERMIT CLOSING THE AIR LINES OFF WHEN ANOTHER TRAILER IS NOT BEING TOWED. - CORRECT ANSWER Where are shut-off valves?" "IT MIGHT NOT COUPLE CORRECTLY. - CORRECT ANSWER What might happen if the trailer is too high when you try to couple?" "NONE - CORRECT ANSWER After coupling, how much space should be between the upper and lower fifth wheel?" "TRUE - CORRECT ANSWER You should look into the back of the fifth wheel to see if it is locked onto the kingpin. True or False?" "FALSE - CORRECT ANSWER To drive you need to raise the landing gear only until it just lifts off the pavement. True or False?" "THERE WILL BE A YELLOW ABS MALFUNCTION LAMP. - CORRECT ANSWER How do you know if your trailer is equipped with anti-lock brakes?" "OPEN THE EMERGENCY LINE SHUT-OFF VALVE. CLOSE THE EMERGENCY LINE VALVE. - CORRECT ANSWER Which shut-off valves should be open and which closed?" "USE THE PARKING BRAKE OR CHOCK THE WHEELS. WAIT FOR AIR PRESSURE TO REACH NORMAL AND THEN PUSH IN THE RED "TRAILER AIR SUPPLY" KNOB. USE THE TRAILER HAND BRAKE TO PROVIDE AIR TO THE SERVICE LINE. GO TO THE REAR OF THE RIG. OPEN THE EMERGENCY LINE SHUT-OFF VALVE AT THE REAR OF THE LAST TRAILER. YOU SHOULD HEAR AIR ESCAPING. CLOSE THE EMERGENCY LINE VALVE. OPEN THE SERVICE LINE VALVE TO CHECK THAT SERVICE PRESSURE GOES THROUGH ALL THE TRAILERS AND THEN CLOSE THE VALVE. - CORRECT ANSWER How can you test that air flows to all trailers?" "CHARGE THE TRAILER AIR BRAKE SYSTEM. SHUT THE ENGINE OFF. STEP ON AND OFF THE BRAKE PEDAL SEVERAL TIMES TO REDUCE AIR PRESSURE IN THE TANKS. THE AIR SUPPLY CONTROL SHOULD POP OUT. - CORRECT ANSWER How can you test the tractor protection valve?" "CHARGE THE TRAILER AIR BRAKE SYSTEM AND CHECK THAT THE TRAILER ROLLS FREELY. THE STOP AND PULL OUT THE TRAILER AIR SUPPLY CONTROL OR PLACE IT IN THE "EMERGENCY" POSITION. PULL GENTLY ON THE TRAILER WITH THE TRACTOR TO CHECK THAT THE TRAILER EMERGENCY BRAKES ARE ON. - CORRECT ANSWER How can you test the trailer emergency brakes?" "CHECK FOR NORMAL AIR PRESSURE, RELEASE THE PARKING BRAKES, MOVE THE VEHICLE FORWARD SLOWLY AND APPLY TRAILER BRAKES WITH THE HAND CONTROL. YOU SHOULD FEEL THE BRAKES COME ON. - CORRECT ANSWER How can you test the trailer service brakes?" "BULKHEAD IS A LIQUID TANK THAT ARE DIVIDED INTO SMALLER TANKS. BAFFLED IS A LIQUID TANK THAT ALSO HAS BULKHEADS IN THEM BUT THE BULKHEADS HAVE HOLES IN THEM THAT LET THE LIQUID FLOW THROUGH EACH. - CORRECT ANSWER How are bulkheads different than baffles?" "KEEP STEADY PRESSURE ON THE BRAKES. DO NOT RELEASE TO SOON WHEN COMING TO A STOP. BRAKE FAR IN ADVANCE OF A STOP AND INCREASE YOUR FOLLOWING DISTANCE. - CORRECT ANSWER How can you help control surge?" "HIGH CENTER OF GRAVITY AND LIQUID MOVEMENT. - CORRECT ANSWER What two reasons make special care necessary when driving tank vehicles?" "CERTIFY - CORRECT ANSWER Shippers package in order to (fill in the blank) the material." "COMMUNICATE - CORRECT ANSWER Driver placard their vehicle to (fill in the blank) the risk." "HAZARD CLASS, AMOUNT OF MATERIALS, AND TOTAL WEIGHT OF ALL MATERIALS. - CORRECT ANSWER What three things do you need to know to decide which placards (if any) you need?" "SHIPPING PAPER AND PACKAGE. - CORRECT ANSWER A hazardous materials identification number must appear on the (fill in the blank) and on the (fill in the blank)." "IN A POUCH ON THE DRIVERS DOOR OR IN CLEAR VIEW WITHIN IMMEDIATE REACH WHILE THE SEAT BELT IS FASTENED OR ON THE DRIVERS SEAT WHEN OUT OF THE VEHICLE. - CORRECT ANSWER Where must you keep shipping papers describing hazardous materials?"