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Engineer Study Guide > COMMERCIAL DMV > Flashcards

COMMERCIAL DMV Flashcards

1
Q

driving endorsements

A 
tank-N
Passenger-P
hazardous materials-H
tank with haz mat-X
doubles/triples-T
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2
Q

blood alcohol .04- lose license for:

A

one year

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3
Q

tank vehicle size minimum

A

more than 119 gallons

aggregate 1000 gallons

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4
Q

serious traffic violation (speeding) above posted by:

A

15 mph

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5
Q

2 serious violations in 3 years

A

lose CDL for 60 days

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6
Q

3 serious traffic violations in 3 years

A

lose CDL 120 days

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7
Q

notify employer in _____days of convictions of traffic violations

A

30

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8
Q

license suspended, revoked, or canceled

notify employer in ___days

A

2

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9
Q

max commericial veh width

A

8.5 ft

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10
Q

max commercial veh height

A

14 ft

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11
Q

single commercial veh axle max weight

A

20,000 lbs

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12
Q

CHP weight limit over allowance

A

100 lbs. (actually 200)

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13
Q

any accident with death, injury or $750 damage

A

report to DMV

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14
Q

days to submit accident report

A

10

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15
Q

accident in employers vehicle notification

A

5 days

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16
Q

CDL tire problems

A

condition
inflation
depth-(DMV on every major groove)
cuts

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17
Q

CDL wheel problems

A

rust around lug nuts
missing clamps, spacers, studs, lugs
welding repairs
cracks, bent, cracked

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18
Q

CDL brake problems

A

cracked drum

oil or grease on brakes

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19
Q

Pre trip engine fluids to check

A

oil, coolant, steering, windshield fluid, batteries, trans, belts

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20
Q

CDL air pressure build time

A

50—–>90 psi 3 minutes

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21
Q

Who needs a CDL?

A 
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
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22
Q

OOS for leaf springs

A

missing or broken in any leaf
1/4 or more missing
any components missing or damaged

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23
Q

exhaust problems

A

loose, broken, missing pipes
exhaust pieces rubbing against fuel components
leaks (black soot)

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24
Q

CDL emergency equipment required

A

fire extinguisher
spare electrical fuses
3 triangles or 3 flares or 6 fuses

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25
7 step pre trip method
1. overview 2. engine compartment 3. start engine and inspect inside cab 4. turn off engine and check lights 5. walk around 6. check signal lights (brake, signal, 4-ways) 7. Start engine check hydraulics, parking brake, test service brake stopping
26
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 ```
27
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 ```
28
pre trip in cab #2
``` steering wheel controls all controls horn windshield wipers all lights gas pedals belt mirrors and windshield ```
29
Pretrip front suspension
spring, spring hanger, shackles, u-bolt, shocks
30
pre trip brake check
condition of brake/drum | hoses
31
pre trip wheel check
missing, bent, broken studs, clamps, or lugs | hub oil
32
look how far ahead when driving
12-15 seconds (1/4 mile at highway speed)
33
triangle placement on divided highway
10', 100', 200' rear
34
triangle placement on undivided highway
100' front, 10', 100' rear
35
put out triangles within _____ min
10
36
obstructed view triangle placement
10', 100-500' rear
37
total stopping distance
perception+reaction+braking
38
perception distance
time you see the hazard to when your brain recognizes it | 1 3/4 seconds
39
reaction distance
recognize to actually hitting the brakes | 3/4-1 second
40
driving speed reductions for weather
raining- 1/3 | snow- 1/2
41
maximum stopping distance at 20 mph
40 ft
42
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.
43
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
44
triangle placard on rear of vehicle
no faster than 25 mph
45
CDL headlight viewing distance
low beams- 250 ft | high beams- 350-500 ft
46
head lights on hours
30 min after sunset-hour before sunset
47
inspect tires every__ hours or every ______miles
2 hours | 100 miles
48
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
49
controlled braking
braking as hard as you can without locking the wheels
50
stab braking
brake all the way release when the wheels lock up wheels start rolling, apply brakes again
51
2 reasons for brake failure
loss of hydraulic pressure | brake fade
52
placard requirements
viewable from 4 sides | 10 3/4"
53
GVW (gross vehicle weight)
total weight including load
54
GVWR (gross vehicle weight rating)
specified by manufacturer as the loaded weight
55
passenger vehicle driver carrying more than ___people must have CDL
10
56
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 ```
57
Full service brake application must deliver _______psi to brake chambers when brakes applied
90
58
Cut in/ cut out pressures
Cut in around 100 psi | Cut out 125 psi
59
2 kinds of air tank drains
Quarter turn/pull cable | Automatic
60
Safety relief valve in first tank set to....
150 psi
61
CDL low air pressure warning
55 psi
62
Spring brakes engage when pressure falls to
20-45 psi
63
CDL low pressure air test
pump brakes until low pressure alarm comes on | between 55-75 psi
64
spring brake activation test
chock, pump brakes until air brake knob pops out | 20-45 psi
65
air pressure build rate
dual air systems 85-100 psi in 45 seconds | single systems 50-90 psi in 3 min.
66
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
67
CDL cut out pressure
must before 130 psi
68
CDL cut in pressure
no lower than 100 psi in trucks
69
parking brake test
set anchor locks and drive against brakes gently
70
total stopping distance
perception distance + reaction distance + brake lag + braking distance
71
reasons for brake fade
over use ---> heat | out of adjustment
72
school bus hazard light distance from train tracks
200 ft
73
off tracking
rear trailer wheels follow different path than the front
74
combination veh brake lines
service (foot brake) | emergency (air to trailer and control emergency brakes)

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