COMMERCIAL DMV Flashcards
driving endorsements
tank-N Passenger-P hazardous materials-H tank with haz mat-X doubles/triples-T
blood alcohol .04- lose license for:
one year
tank vehicle size minimum
more than 119 gallons
aggregate 1000 gallons
serious traffic violation (speeding) above posted by:
15 mph
2 serious violations in 3 years
lose CDL for 60 days
3 serious traffic violations in 3 years
lose CDL 120 days
notify employer in _____days of convictions of traffic violations
30
license suspended, revoked, or canceled
notify employer in ___days
2
max commericial veh width
8.5 ft
max commercial veh height
14 ft
single commercial veh axle max weight
20,000 lbs
CHP weight limit over allowance
100 lbs. (actually 200)
any accident with death, injury or $750 damage
report to DMV
days to submit accident report
10
accident in employers vehicle notification
5 days
CDL tire problems
condition
inflation
depth-(DMV on every major groove)
cuts
CDL wheel problems
rust around lug nuts
missing clamps, spacers, studs, lugs
welding repairs
cracks, bent, cracked
CDL brake problems
cracked drum
oil or grease on brakes
Pre trip engine fluids to check
oil, coolant, steering, windshield fluid, batteries, trans, belts
CDL air pressure build time
50—–>90 psi 3 minutes
Who needs a CDL?
Vehicle 26000 or more towing a vehicle of 10000+ tow more than 1 vehicle transport 10 or more passengers any w/ haz mat required placard
OOS for leaf springs
missing or broken in any leaf
1/4 or more missing
any components missing or damaged
exhaust problems
loose, broken, missing pipes
exhaust pieces rubbing against fuel components
leaks (black soot)
CDL emergency equipment required
fire extinguisher
spare electrical fuses
3 triangles or 3 flares or 6 fuses
7 step pre trip method
- overview
- engine compartment
- start engine and inspect inside cab
- turn off engine and check lights
- walk around
- check signal lights (brake, signal, 4-ways)
- Start engine check hydraulics, parking brake, test service brake stopping
Pre trip- engine compartment
oil level coolant level hoses power steering fluid level windshield washer fluid battery level (if possible) trans fluid level belts for tightness (altern., water, air compressor) leaks wiring
Pre trip inside cab with engine running
Oil pressure air pressure build from 50-90 IN 3 MINUTES cut out 120-140 ammeter/voltmeter coolant temp oil temp lights/buzzers
pre trip in cab #2
steering wheel controls all controls horn windshield wipers all lights gas pedals belt mirrors and windshield
Pretrip front suspension
spring, spring hanger, shackles, u-bolt, shocks
pre trip brake check
condition of brake/drum
hoses
pre trip wheel check
missing, bent, broken studs, clamps, or lugs
hub oil
look how far ahead when driving
12-15 seconds (1/4 mile at highway speed)
triangle placement on divided highway
10’, 100’, 200’ rear
triangle placement on undivided highway
100’ front, 10’, 100’ rear
put out triangles within _____ min
10
obstructed view triangle placement
10’, 100-500’ rear
total stopping distance
perception+reaction+braking
perception distance
time you see the hazard to when your brain recognizes it
1 3/4 seconds
reaction distance
recognize to actually hitting the brakes
3/4-1 second
driving speed reductions for weather
raining- 1/3
snow- 1/2
maximum stopping distance at 20 mph
40 ft
CDL overtaking slower vehicles
20 mph or less (slow vehicle)
must pass by going 10 mph faster in quarter mile
follow no closer than 300 ft.
CDL space in front of you formula
1 second per 10 ft of vehicle length below 40 mph
add 1 second to total for over 40 mph
triangle placard on rear of vehicle
no faster than 25 mph
CDL headlight viewing distance
low beams- 250 ft
high beams- 350-500 ft
head lights on hours
30 min after sunset-hour before sunset
inspect tires every__ hours or every ______miles
2 hours
100 miles
leaving the road CDL procedures
avoid braking until below 20 mph
one set of tires on the pavement
hold wheel tightly and steer sharp back on road
controlled braking
braking as hard as you can without locking the wheels
stab braking
brake all the way
release when the wheels lock up
wheels start rolling, apply brakes again
2 reasons for brake failure
loss of hydraulic pressure
brake fade
placard requirements
viewable from 4 sides
10 3/4”
GVW (gross vehicle weight)
total weight including load
GVWR (gross vehicle weight rating)
specified by manufacturer as the loaded weight
passenger vehicle driver carrying more than ___people must have CDL
10
forbidden haz mat on a bus
poison gas poison liquid more than 100 pounds of solid poison radioactive 500 lbs of allowed haz mat and no more than 100 lbs of any one class
Full service brake application must deliver _______psi to brake chambers when brakes applied
90
Cut in/ cut out pressures
Cut in around 100 psi
Cut out 125 psi
2 kinds of air tank drains
Quarter turn/pull cable
Automatic
Safety relief valve in first tank set to….
150 psi
CDL low air pressure warning
55 psi
Spring brakes engage when pressure falls to
20-45 psi
CDL low pressure air test
pump brakes until low pressure alarm comes on
between 55-75 psi
spring brake activation test
chock, pump brakes until air brake knob pops out
20-45 psi
air pressure build rate
dual air systems 85-100 psi in 45 seconds
single systems 50-90 psi in 3 min.
CDL static leak test (applied/not applied)
turn off engine, release brakes, time for 1 min
cannot leak 2 psi or more
3 psi applied
CDL cut out pressure
must before 130 psi
CDL cut in pressure
no lower than 100 psi in trucks
parking brake test
set anchor locks and drive against brakes gently
total stopping distance
perception distance + reaction distance + brake lag + braking distance
reasons for brake fade
over use —> heat
out of adjustment
school bus hazard light distance from train tracks
200 ft
off tracking
rear trailer wheels follow different path than the front
combination veh brake lines
service (foot brake)
emergency (air to trailer and control emergency brakes)
