How can you test the low pressure warning signal? shut the engine off when you have enough pressure that

NY CDL Flashcards What effects can wet brakes cause, how can you avoid these problems wet brakes can be weak or grab, don't drive through deep puddles or running water if you can avoid it What are spring brakes?a heavy spring that will engage the brakes if all air is out of the brake system All vehicles with air brakes must have a low air pressure warning signal. True or False?True How can you test the low pressure warning signal? shut the engine off when you have enough pressure that the low pressure warning signal is not on. turn the electrical power on and step on and off the brake pedal to reduce the air pressure in the tank. the warning signal must come one before the pressure drops to less than 60psi Front wheel brakes are good under all conditions. True or False?True What are the slack adjusters?a slack adjuster is a lever arm connected to the brake chamber's push rod at the clevis assembly. it adjusts the brakes to make up for lining wear.What is a hazardous materials placard?placards are signs put on the outside of a vehicle that identify the hazard class of the cargo What is a supply pressure gauge used for? To tell you how much pressure is in the air tanks What should you do if you become sleepy while driving?stop in a safe place and sleep If you are away from your vehicle only a short time, you do not need to use the parking brake. True or False?false The use of brakes on a long, steep downgrade is only a supplement to the braking effect of the engine. True or False?true You can safely remove the radiator cap as long as the engine isn't overheated. True or False False You should decrease you following distance if someone is following you too closely False What should you do when confronted with an aggressive driver make every attempt to get out of their way, avoid eye contact, call the police if you can If stopped on a hill, how can you start without rolling backpartly engage the clutch before you take your foot off the brake, put on the parking break whenever necessary to keep from rolling back Name some key steering system partssteering wheel, tie rod, steering shaft, hydraulic fluid reservoir, gear box, pitman arm, drag link, steering knuckle, spindle, steering arm, power steering cylinder What type of vehicles can get stuck on a railroad-highway crossing?low slung units(car carrier, moving van, possom belly livestock trailer,single axle tractor pulling a long trailer with it's landing gear set to accommodate a tandem axle tractor

What is the proper braking technique when driving a vehicle with antilock brakes?use only the force necessary to stop safely an stay in control What are 2 special conditions where you should downshiftbefore starting down a hill, before entering a curve How do you use in-vehicle communications equipment cautiously position the cell phone in easy reach, pull over and stop when possible, hang up in tricky traffic situation What should wheel bearing seals be checked for not leaking When you turn suddenly while pulling doubles, which trailer is most likely to turn over?the rear trailer How do you know if your vehicle has antilock brakes?They will have yellow malfunction lamps on the instrument panels and yellow malfunction lamps on the trailers. Dollies after 1998 are required to have a lamp on the left side.What 3 things add up to total stopping distance perception distance, reaction distance, braking distance What is black icea thin layer of ice that you can see the road through What four things related to cargo are drivers responsible for?Inspecting your cargo; Recognizing overloads and poorly balanced weight.; Knowing your cargo is properly secured and does not obscure your view ahead or to the sides; Knowing your cargo does not restrict your access to emergency equipment; Why are placards used?they are used to warn others of hazardous materials How do you find out how many seconds of following distance space you have

• second for every 10 feet of vehicle length under 40 mph,

over 40 mph add a second per 10 feet Stopping is not always the safest thing to do in an emergency. True or False True Why should you be in the proper gear before starting down a hill?You will not be able to shift into a lower gear once you are going. Forcing an automatic transmission into a lower gear at high speed could damage the transmission What does "communicating" mean in safe driving signaling your intentions What are some things to do at an accident scene to prevent another accident?protect the area, notify authorities, care for the injured What factors can cause brakes to fade or fail? too much heat from over use and not using engine braking How do you brake when you drive a tractor-trailer combination with ABS?normal braking procedures Why should you not use the trailer hand brake to straighten out a jackknifing trailer?because the trailer tires are what caused the jackknife, they need to get traction not lock up What are 2 main things to look for ahead look for vehicles coming onto the highway, into your lane or turning. watch for brake lights from slowing vehicles How far ahead does the manual say you should look 12 to 15 seconds How can you check that the spring brakes come on automatically?reduce the air pressure in the tank by fanning the brake peddle, the tractor protection valve and parking brake valve should close. this should cause the spring brake to come on If you swing wide to the left before turning right, another driver may try to pass you on the right True What is an "escape ramp?"usually located a few miles from the top of a downgrade

Why put the starter switch key in you pocket during pre-trip inspection For your safety Name some causes of vehicle fires.tires, spilled fuel, short circuits due to damaged insulation, flammable cargo Name two basic reasons for covering cargo on an open bed.To protect people from spilled cargo, to protect the cargo from weather When backing, why is it important to use a helper because there are blind spots you can't see How do antilock brakes help you?help you avoid wheel lock up and maintain control Why should you be in the proper gear before starting down a hill?so you don't have to wear your brakes out slowing down What are some advantages of going right instead of left around an obstacle?No oncoming traffic, clear shoulder, won't force someone else into oncoming traffic Retarders keep you from skidding road is slippery False What must you check before transporting a sealed load?Check that you don't exceed gross weight and axle weight limits.Describe the proper braking technique when going down a long, steep downgrade apply the brakes just hard enough to feel a definite slowdown; when speed has been reduced to approximately five mph below your "safe" speed, release the brakes; repeat when speed has increased to your "safe" speed Why must air tanks be drained?To remove any water or ail What is a hazardany road condition or other road user that is a possible danger What factors determine your selection of a "safe" speed when driving down a long steep downgrade?Total weight of the vehicle and cargo, length of the grade, steepness of the grade, road conditions and weather What 3 kinds of emergency equipment should you havefire extinguisher, 3 reflective triangles, spare fuses What are the 2 ways to know when to shift RPM's or speed What is the difference between aggressive driving and road rage aggressive driving is selfish bold and pushy, road rage is intent to do harm to someone else If a tire blows out, you should put the brakes on hard to stop quickly. True or False False What are the danger signals of drowsy driving? your eyes close or go out of focus by themselves, you have trouble keeping your head up, you can't stop yawning, you have wondering disconnected thoughts, you don't remember driving the last few miles Name some suspension system defectsspring hangers that allow movement of axle from proper position, cracked or broken spring hangers, missing or broken leaves in any leaf spring, leaking shock absorbers, air suspension systems that are damaged and or leaking, any parts of the suspension or frame that is cracked or broden What's the most important hand signal that you and the helper should agree on stop Why make emergency plans when you see a hazard to be prepared if you have to take action in an emergency If you are driving a 30 foot vehicle at 55 mph how many seconds of following distance should you have 5

Name two causes of tire firesunder inflated tires and duals that touch Coffee and a little fresh air will help a drinker sober up.True or False false How long does it take for a typical tractor-trailer unit to clear a double track?15 seconds Gross Combination Weight RatingThe maximum Gross Combination Weight specified by the manufacturer for a specific combination of vehicles plus its load How often must you stop while on the road to check your cargo?Within the first 50 miles; after you have driven for 3 hours or 150 miles; after every break you take during driving You should use low beams whenever you can false How can you check slack adjusters?pull hard in each slack adjuster you can reach. if it moves more than about 1 inch where the push rod attaches to it, it probably needs adjustment How do you recognize distracted driversvehicles drifting into other lanes, or traveling at inconsistent speeds, drivers that are preoccupied with objects How do you know if your vehicle is equipped with antilock brakes?Vehicles with ABS have yellow malfunction lamps to tell you if something isn't working.What is the minimum number of tie downs for any flat bed load?Two Empty trucks have the best brakingfalse How often should you drain air tanks?at the end of each working day You still have normal brake functions if your ABS is not working. True or False?true What is a dual air brake system?Has two separate air brake systems which use a single set of brake controls.What things to check during a tripinstruments, air pressure gauge, temp gauge, pressure gauge, ammeter/voltmeter, mirrors, tires, cargo/ cargo covers, lights.Most important reason for vehicle inspection safety Why should you back toward the driver side you can see better What are some things you can do to reduce you stress before and while you drive easy listening music, be realistic about your travel time, give others the benefit of the doubt What two things are important to prevent rollover?keep your cargo low and centered What is the minimum tread depth for tires 4/32-inch front 2/32-inch rear When using your extinguisher, should you get as close as possible to the fire?no How do you test hydraulic brakes for leaking pump the break peddle 3 times and them hold, the peddle should not move What kinds of fires is a B:C extinguisher not good for?fires in combustible metals What should you do before you drive if you are drowsysleep When should you down shift and automatic transmissionwhen going down grades Name two situations where legal maximum weights may not be safe During bad weather or in mountains