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NYS CDL > Driving Safely > Flashcards

Driving Safely Flashcards

1
Q

How much tread do you need on front tires to operate safely?

A

4/32” aka 1/8”

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2
Q

How much tread do you need on tires other than front tires?

A

2/32” aka 1/16”

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3
Q

Where are regrooved, recapped, or retreaded tires not allowed to be used?

A

On the front wheels of a bus

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4
Q

Steering wheel play of more than ______ degrees or _______inches at the rim of a 20” steering wheel can make it hard to steer

A
  1. 2.
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5
Q

How many leaf springs can be broken before the vehicle has to be put OOS?

A

One fourth or more of the leaves in any spring assembly

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6
Q

Can a vehicle be operated with a main leaf spring broken?

A

No.

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7
Q

Can a vehicle be operated if a leaf spring is missing ?

A

No

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8
Q

What are the emergency equipment required to be carried?

A

Fire extinguisher
Spare fuses
Warning devices (3 red triangles)

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9
Q

Air pressure should build from ____ to ____psi within _____ mins

A

50-90 3 mins

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10
Q

Air pressure governor cut out is usually _____ to ______ psi

A

120-140 psi

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11
Q

How often must drivers of trucks transporting cargo inspect it?

A

Within the first 50 miles, and every 150 miles or every 3 hours. Whichever comes first

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12
Q

How do you test hydraulic brakes for a leak?

A

Pump pedal 3 times and apply firm pressure for 5 seconds. Pedal should not move.

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13
Q

How do you test parking brake?

A

Seat belt.
Set brake
Put vehicle into low gear pull against brake

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14
Q

How do you test service brake stopping action?

A

Go 5 mph
Push pedal firmly
Look for pulling or problems

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15
Q

What are the two special conditions where you should downshift?

A

Before starting downhill

Before entering a curve

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16
Q

Retarders keep you from skidding when the road is slippery?

True or false?

A

False

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17
Q

What are two ways of knowing when to shift?

A

Engine speed

Road speed

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18
Q

How far ahead should a driver be looking? (Time)

A

12-15 seconds ahead

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19
Q

How far ahead should a driver look? (Distance)

A

Low speeds- one block

High speeds- quarter mile

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20
Q

What are three good rules for using turn signals ?

A

Signal early
Signal continuously
Cancel your signal

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21
Q

How can you warn drivers behind you that you’ll need to slow down?

A

A few light taps on the brake pedal, enough to flash the brake lights

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22
Q

Should you signal drivers when it’s safe to pass you?

A

No

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23
Q

Should you tap the horn lightly or flash your lights when passing ?

A

Yes, do this so they know you’re there. 2.5.2

24
Q

How long do you have to put out your emergency warning devices if you must stop on a road or shoulder?

A

Within 10 mins

25
Q

If you stop on a one way or divided highway, where should you place your warning devices?

A

10ft,
100ft,
And 200ft

Torward the approaching traffic

26
Q

If you stop on a 2 lane rd with traffic on both directions, where should you place warning devices?

A

Within 10ft of front or rear corners

100 ft behind and 100ft ahead of the vehicle

27
Q

If you are stopped beyond a hill, where drivers can’t see the vehicle within 500ft, where should the warning devices be placed?

A

Move rearmost triangle to a point back down the road so warning is provided

28
Q

What is perception distance?

A

The distance your vehicle travels from the time you see a hazard until your brain recognizes it

29
Q

What is reaction distance?

A

The distance you continue to travel before you physically hit the brakes

30
Q

What is the average driver reaction time?

A

3/4 - 1 second

31
Q

What is the average driver reaction distance traveled at 55 mph?

A

61 ft

32
Q

What is braking distance?

A

The distance your vehicle will travel in ideal conditions while you are braking

33
Q

At 55 mph on dry pavement with good brakes, what is the braking distance?

A

216 ft

34
Q

What is total stopping distance?

A

The total minimum distance your vehicle will travel

35
Q

Total stopping distance at 55 mph?

A

419 feet

36
Q

Doubling speed 20-40 makes stopping distance ___times longer

A

4 times

37
Q

Triple speed from 20-60 stopping distance is ___ times greater.

A

Nine times

38
Q

T or F

Empty trucks stop sooner than fully loaded trucks

A

False

39
Q

How much should you reduce speed on a wet road?

A

By one third

40
Q

How much should you reduce speed on packed snow?

A

By half or more

41
Q

How much should you reduce speed if the road surface is icy?

A

To a crawl

42
Q

What should you do if hydroplaning?

A

Release accelerator and push in clutch

43
Q

What is the safest speed when driving in heavy traffic?

A

The speed of other vehicles

44
Q

How much space should you keep in front of you at speeds below 40 mph?

A

One second for every 10’ of vehicle length.

Over 40 add one Sec

45
Q

What is something you can do when being tailgated to reduce chances of a crash?

A

Increase following distance

46
Q

Where can strong winds be bad?

A

Coming out of tunnels

47
Q

When do you start turning on a left turn?

A

When you reach the center of the intersection

48
Q

What does the symbol red triangle with orange center mean?

A

Slow moving vehicle

49
Q

What should you do when someone coming at you has their brights on?

A

Look at the right side of the road

50
Q

How far ahead can you see with your low beams?

A

250 ft

51
Q

How far ahead can you see with you high beams?

A

350-500ft

52
Q

What distance should you switch off your high beams

A

500 ft

53
Q

When driving in hot weather how often should you inspect your tires?

A

Every two hours or every 100 miles

54
Q

How should you brake when going down a hill?

A

Brake till you get 5mph below safe speed, release brakes

Brake again when at your safe speed

55
Q

How long does it take a tractor trailer to clear a double RR track?

A

14 seconds

56
Q

Should you apply brakes when turning?

A

No

NYS CDL (1 decks)

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