school bus cdl

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before checking the free play in the slack adjustors you shoud...: 1. park on level ground
2. chalk the wheels
3. release parking break
pupils must walk at least how many feet in front of the bus to cross the road?: 12 feet
immediatly after stopping at a bus stopping at a bus stop you should?: open enterance door slightly slightly to activate stop arms and overhead red warning lights
what is stab breaking?: pressing break pedal,
release when wheels lock up,
repeat when wheels start turning
what makes up the total stopping distance?: perception
reaction
effective
the air pressure should build from 85 to 100 psi within __ seconds.: 45
name some key steering system parts: tie rod
steering wheel
power steering sylinder
gear box
the "fanning" of the breaks is not recomended for long grades because: the short time off the breaks does not allow them to cool
what is the danger zone?: area on all sides of the bus
the use of air breaks on downgrades is only supplement to the...: breaking effect of the engine
whats the most important way to see the sides and rear of your vehicle?: check merriors
bus stalls or trapped on tracks what do you do?: get everyone out and off the tracks
move pupils at an angle which is both away from the tracks and toward the train.
what things should you check for during a trip?: lights
tires
guages
breaks
reflectors
on S cam breaks what happens to the air when you push the break pedal?: air pushes the rod out
moving the slack adjustor
and twisting the cam shaft
what are two ways to know when to shift?: engine speed
road speed
what are three kinds of emergency equipment you must have?: electrical fuses
3 red triangles
fire extinguisher
how should you check your service breaks are working properly?: wait for normal air pressure
release parking break
move foward slowly
firmly step on break
name some suspension system defects: movment in axel-->spring hangers
missing or broken leafs in any leaf spring
leaking shock absorbers
what should be the max. air loss in a fully charged air system. for bus? single vehicle?: bus: 3lbs per sq. in.
single: 2lbs per sq. in.
how much air must the storage tanks hold?: enough air to allow the braks to be used even if the air compressor stops working
when should you downshift automatic trasmission?: when you want greater engine breaking
how far ahead does the manual say to look?: 12-15 sec.
what is likely to happen when breaks are not properly adjusted before going down steep grades?: system could become unbalanced with some breaks doing more work then others
-->heat up lose stopping power.
what causes break fade?: heat in the breaks as the drums heat and expand
what is emergency controlled breaking?: firmly apply breaks w/o locking them
ensure that the crossover mirrors are properly adjusted so that you can see;: front tires touching ground
front of bus to the service door
cleared danger zone
when making a very quick stop you should break so that you...: stay in a straight line and can stear
school bus drivers must have a cdl and?: school bus
how far around the bus does the danger zone extend to?: 30 ft-->front
10ft--> everywhere else
break shoes and linings are located where?: inside each break drum
when should you use wheel chalks insted of parking breaks to set the vehicle?: when breaks are hot
or
breaks are wet in freezing weather
what is controlled breaking?: firm on breaks w/o locking wheels or turning steering
release breaks if sliding
true or false? a school but driver doesnt have to wear a seat belt at all times?: false
who makes the final decision to determine when weather conditions make the roads unsafe to travel?: the driver
when backign why is it important to use a helper?: there are blind spots you cant see
what are the two types of rail road crossings?: passive
active
what are the most important hand signal that you and the helper should agree on when backing?: stop
if you do not have automatic tank drains when should you drain the air tanks?: every day
what happens when the break shoes and linings are pushed against the inside of the drum?: causes friction which slows the vehicle and creats heat
what is one of the more dangerous procedures a school bus driver must undertake?: loading and unloading
what are the two types of air tank drains?: automatic and manual
overhead inside rearview mirrior should be able to see?: top of rear window
all the students
what could happen id the break pedal is pressed and released to often?: air can be let out of the system faster then the air compressor can replace it
how should breaks be used when driving down long grades?: shift into a low gear before decent
maintain a light use of breaks
how do you test hydraulic breaks for leaks?: pump breaks three times
why should you back towards the drivers side?: so you can see better
you should know your breaks are fading when...: have to push harder on break pedal to control speed on downgrade
how many red reflective triangles should you carry?: 3
what is passive railroad crossing?: no traffic control divices
do you have to stop at passive rail road crossings?: yes
true or false? a school bus is every motor vehicle used for the transportation of children to or from school or school activities?: true
what is active rail road crossing?: has traffic contorl divices
what are two main things to look for shead?: look for vehicles coming into your lane or turning
whenever you double your speed, it will take about __ times as much distance to stop.: 4
what is the most important reason for doing vehicle inspections?: safety
when approching a school bus stop you should activate your overhead amber lights how far from the bus stop?: 300 ft.
no pupil shall be allowed to remain in transit to and from school for...: 3 hours round trip
when it is carried on a bus, hazardous materials must be...: labeled
what kind of air is used to make breaks work?: compressed air
the first thing to do when a low air warning light comes on is...: stop and park safely asap
what is the delay that can take up to a half a second called?: break lag
if the air compressor is belt driven what should you look for in checking the belt?: wear
cracks
tightness
what is the purpose of the safety release vavel that is installed in the first tank the air compressor pumps air to?: protects the tank from to much pressure
name some things you should check on the front of your vehicle durnig a walk around inspection...: lights intacked
leaning towards one side
general condition
fresh oil spills
the distance that you should look ahead while driving is about___ mile at hwy speed.: 1/4
where would you find the drian valve for each air tank?: bottom of tank
how often should you check the alcohol evaporator in cold weather?: fill up as needed in cold weather
what is the purpose of an alcohol evaporator?: puts alcohol into the air system and reduces the risk of ice in the air break valves in cold weather
name three different breaking systems: service
parking
emergency
true or false? each state board of education is charged with the primary responsibility of rules and regulations reguarding pupil transportation.: true
a truck with air breaks going 44mph would require a stopping distance of:: +300ft.
the safety valve is usually set to reduce air pressure at __psi.: 150
what does the air compressor do?: pumps air into the storage tanks
true or false? it doesnt matter is school bus drivers know current laws and regulations.: false
what is the minimum thread depth for front tires? all other tired?: 4/32 in. -->front
2/23 in. -->all others
what things shoudl you check for during a trip?: guages
tires
breaks
lights
reflectors
when making a normal stop with a manual transmission vehicle when should you push in the clutch?: when rpms are close to idle
what are the two special conditions where you should downshift?: before downgrade
before entering a curve
what makes up the total stopping distance with air breaks?: break lag
perception
reaction
effective
where are foundation breaks found?: near the wheels
to check the air governor cut in and cut out pressure when running the engine at a fast idle when should the air gov. cut out the air compressor?: manufacturer's specified air pressure
what is the first thing you should od if your breaks fail while driving downhill?: get off road asap
what does the air compressor gov. control?: WHEN the air compressor will pump air into the air storage tanks
why does air breaking take more time then hydrolic breaking?: takes time for air to flow through the lines to the breaks
true or false? inspection of the busses are made one or more times a year in order to determine whether the school bus can be used to safely transport school children.: true
what is the following distance on hwy's?___ft: 500ft
on dry pavment at 55mph about how much extra distance is added by break lag?: 32 ft.
convex mirrors should be positioned so you can see...: sides of bus
front rear of tires touching ground
1 lane of traffic on either side of the bus
true or false? always unload on the right outside lane if on mulit-lane roads.: true
how long can your tail swing be on a school bus?: up to 3ft
the blind spot behind the bus could extend up to ___ft depending on the width of the bus.: 400
if a straight vehicle (no trailer) goes into a front- wheel ski, it will:: travel straight ahead even if you turn the steering wheel
what should you be able to see with properly adjusted outside flat mirrors?: 200ft behind the bus
along the sides
rear tires touching the ground
what are other names for the break pedal?: foot valve
tredle valve
if oil and water collect in the air tanks what can happen to the breaks?: can fail.
true or false? a school bus can transport more students then indicated by the manufacturers rated capacity for the bus?: false
When the safety valve releases air it means that...: A. The pressure has exceeded 150 psi
B. Too much air is in the air compressor
C. Something is wrong, and you should have it checked by a mechanic

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Deck Info

Number of cards 97

Created By cass_buss89