5612 Why should drivers put the starter switch key in your pocket during th... Answer5486 What is counter steering?... Answer4101 The safety catch for the fifth wheel locking lever must be ____ for a ... Answer3616 Which of these statements about double clutching and shifting is true?... Answer3581 The most common type of foundation brakes found on heavy vehicles is t... Answer3449 A moving vehicle ahead of you has a red triangle with and orange cente... Answer3227 To avoid a crash, you had to drive onto the right shoulder. You are no... Answer3048 Which of the following is the correct term for a long commercial vehic... Answer2861 Normal oil pressure while idling is:... Answer2861 You should decrease your following distance if somebody is following y... Answer2858 Driving a 100 foot twin trailer combination at 50 mph on a dry road in... Answer2815 When is it required for the driver to have an approved gas mask?... Answer2656 The braking power of the spring brakes:... Answer2555 Fanning air brakes:... Answer2524 If your truck or bus has dual parking control valves, it means that yo... Answer2514 When checking the free play of manual slack adjusters on s-cam brakes,... Answer2499 If you are being tailgated, you should:... Answer2475 Which of these is a good rule to follow when using a fire extinguisher... Answer2448 The crack and whip effect is a major hazard for trucks with trailers. ... Answer2428 You find an overheated tire during an enroute inspection. If you are h... Answer2426 When a substance in the materials table is written in italics, it mean... Answer2419 How many red reflective triangles should you carry?... Answer2411 Which one of these shipping paper discriptions for a hazardous materia... Answer2404 Liquid tight separations between compartments inside tanks are called:... Answer2314 You are driving a 40-foot vehicle at 35 mph. Driving conditions are on... Answer2282 If a materials class is the word FORBIDDEN, what kinds of materials ar... Answer2269 These horizontal yellow lines indicate:... Answer2244 Normal engine temperature ranges from:... Answer2210 If you have a major leak in the service line and you put on the brakes... Answer2176 You are checking your tires for a pre-trip inspection. Which of these ... Answer2147 If you try to downshift while coming down a mountain, you might:... Answer2065 When a coolant container is part of a pressurized system, you can:... Answer2041 Which is true regarding bridge laws?... Answer1966 How can you test the low pressure warning signal?... Answer1936 Which of the following statements is true about overhead clearance?... Answer1935 Why should you back toward the driver's side?... Answer1932 To ensure air is supplied to the second trailer on a combination vehic... Answer1921 How much longer can you drive for unexpected adverse driving condition... Answer1910 The parking brake should be tested while the vehicle is:... Answer1910 When your cargo tank has baffles, what handling effect do you expect?... Answer1882 The hazardous waste manifest should be:... Answer1874 You are driving a 40 foot vehicle at 45mph. Driving conditions are ide... Answer1874 Which of these statements about stopping distance and speed is true fo... Answer1863 You do not have a hazardous materials endorsement on your commercial d... Answer1854 When you are parked at the side of the road at night, you must:... Answer1849 Which of the following statements about large trucks is false?... Answer1849 Describe the proper braking technique when going down a long steep dow... Answer1820 During the 14 consecutive hour duty period, you are allowed to drive y... Answer1810 In normal driving, some drivers use the hand valve before applying the... Answer1803 What does progressive shifting mean?... Answer1791 When should you downshift automatic transmissions?... Answer1787 What type of fire extinguisher is required in the power unit of a plac... Answer1711 If the air compressor leakes, which mechanism keeps the air in the tan... Answer1696 Three things add up to the total stopping distance for your vehicle. T... Answer1694 When fueling a placarded vehicle, someone must always be:... Answer1691 When making emergency stops with air brakes and using the stab braking... Answer1667 Separations (between compartments inside tanks that have openings or h... Answer1653 For combination vehicles, when the front trailer supports are up and t... Answer1650 When you are not sure who has the right-of-way, the safest course of a... Answer1610 Liquid in a tank with baffles can have what kind of surge?... Answer1565 You should be extremely cautious when driving smooth bore tankers, esp... Answer1562 If the driver crosses the air lines when hooking up to an old trailer:... Answer1549 Outage means:... Answer1546 You are driving a new truck with a manual transmission. What gear will... Answer1543 This is the part of the kingpin that the locking jaws should close aro... Answer1541 Which of these is a good rule to follow when using a fire extinguisher... Answer1540 Some large trucks have convex or spot mirrors, which:... Answer1532 You should know that your brakes are fading when:... Answer1529 The air compressor governor controls:... Answer1526 Overloading your trailer can result in the following EXCEPT:... Answer1516 The air leakage rate for a combination vehicle (with engine off and br... Answer1472 What should wheel bearing seals be checked for?... Answer1462 Baffles in liquid cargo tanks do not usually prevent the movement of s... Answer1442 You should plan ahead when you park your vehicle so that:... Answer1435 You need to be extremely cautious when driving smooth bore tankers. Th... Answer1421 Which of these about emergency steering of tankers is true?... Answer1420 A steady yellow light at an intersection means you must:... Answer1404 When driving down a long steep hill, you should:... Answer1402 What is a supply pressure gauge used for?... Answer1398 Which of these statements is correct about seeing ahead?... Answer1388 If the trailer breaks away from a combination vehicle, pulling apart b... Answer1387 With a Class C drivers license a person may drive:... Answer1386 How far ahead should you look when driving a truck?... Answer1386 Converter dollies:... Answer1356 The amount of liquid to load into a tank depends on:... Answer1322 If heavy fog appears, you should:... Answer1321 In the event of an accident you should remember to do the following EX... Answer1317 When driving on a clear night, you must dim your headlights from high ... Answer1289 Front wheel brakes work well in all conditions.... Answer1272 What are two special conditions where you should downshift?... Answer1258 When coupling a tractor to a semi trailer and have backed up but are n... Answer1257 After 33 consecutive hours off-duty, you may legally restart your 60 o... Answer1250 When you unload the smaller tanks of a tank with bulkheads, be careful... Answer1235 Retarders prevent you from skidding on slippery surfaces.... Answer1222 A vehicle is loaded with very little weight on the drive axle. What ma... Answer1177 Before backing under a trailer, make sure:... Answer1162 The term Gross Combination Weight refers to:... Answer1154 Air loss in a straight truck or bu should not be more than ______ with... Answer1149 If oil and water collect in the air tanks, wha tcan happen to the brak... Answer1148 You should check the height of the trailer before connecting a convert... Answer |