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körkort > stats and percentages > Flashcards

stats and percentages Flashcards

1
Q

what % of people who die in car accidents were not wearing a seat belt?

A

40 percent

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2
Q

at what speed do airbags deploy?

A

20-30 km/hr

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3
Q

how far must the driver sit behind the airbag?

A

25 cm

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4
Q

how far must the passenger sit behind the airbag?

A

50 cm

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5
Q

you are responsible that all passengers under age X have the right sort of seatbelt

A

age 15

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6
Q

people under this height must be in a special child seat

A

135 cm

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7
Q

children in this age range must be in a rear-facing seat

A

9 months to 4 years

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8
Q

children must be in a baby seat until this age

A

9 months

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9
Q

children must be this tall in order to sit in a seat with an airbag

A

140 cm

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10
Q

how many people can fit in a private car, max?

A

1 driver, 8 passengers

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11
Q

how does a roof box decrease a car’s fuel efficiency?

A

10 percent less efficient

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12
Q

you need to mark a load that projects backwards if it projects longer than this amount

A

one meter

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13
Q

if a load projects more than this amount forward it needs to be marked, even if it is visible

A

one meter

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14
Q

how far can a sideways load project?

A

20 cm to each side

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15
Q

what is the maximum vehicle width for a car with a projecting load?

A

260 cm

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16
Q

how does side force increased in relation to speed?

A

quadratically

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17
Q

how does BRAKING DISTANCE increase in relation to speed?

A

Quadratically

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18
Q

how does reaction distance increase in relation to speed?

A

proportionally

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19
Q

how does stopping distance increase in relation to speed?

A

the braking distance increased quadratically, but the reaction distance increased proportionally

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20
Q

what is the formula for reaction distance if a driver reacts in one second?

A

round speed to the nearest 10, remove the zero, and multiply by 3

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21
Q

what is the formula for braking distance?

A

divide the speed by ten, square the result, then divide by two

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22
Q

how does the reaction time increase in relation to speed?

A

trick question. it doesn’t. if the reaction time doubles, the reaction distance doubles, but the reaction time is not calculated based on speed.

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23
Q

stopping distance in ideal conditions when going 30 km/hr

A

13.5 meters

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24
Q

stopping distance in ideal conditions when going 50 km/hr

A

27.5 meters

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25
Q

stopping distance in ideal conditions when going 70 km/hr

A

45.5 meters

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26
Q

stopping distance in ideal conditions when going 90 km/hr

A

67.5 meters

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27
Q

stopping distance in ideal conditions when going 110 km/hr

A

93,5 meters

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28
Q

what should you do after changing the wheel?

A

retighten nuts after 50-100 km

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29
Q

how does kinetic energy increase in relation to speed?

A

quadratically

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30
Q

what kind of steering (over or under) is typical of a front wheel drive car?

A

understeering

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31
Q

at what age should tires be replaced,even if tread depth is still acceptable?

A

over 10 years old

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32
Q

what is the minimum tread depth for summer tired?

A

1.6 mm

33
Q

what are the rules for using a spare wheel?

A

no futher than 80 KM and no more than 80 km/hr

34
Q

how do you calculate meters per second?

A

divide speed by 3.6

35
Q

if a battery is only 50 percent charged, what outside temp can it freeze at ?

A

minus 7 c

36
Q

if a battery is fully charged, at what temp is there a risk of freezing

A

minus 65 degrees celsisus

37
Q

if a battery is 80 % charged, it risks freezing at this outdoors temp:

A

minus 45 degrees celsius

38
Q

what color terminals get connected first when jump starting a car?

A

red (positive)

39
Q

what is the termf for the weight of the car + trailer at any given moment, including the driver, passengers, and cargo?

A

gross weight

40
Q

what is the weight of the car and driver (no load, no passengers)?

A

kerb weight

41
Q

what is the term for the MAXIMUM weight a car can have, including drivers, passengers, and cargo?

A

total weight

42
Q

what is the term for the total weight minus the car, safety equipment, and driver?

A

maximum load

43
Q

what kind of insurance must all cars have?

A

third party insurance

44
Q

where are the warning signs placed on a road with a speed limit of 60 km/hr?

A

50-200 meters

45
Q

where are the warning signs placed on a road with a speed limit of 50 km/hr?

A

five to 75 meters

46
Q

where are the warning signs placed on a road with a speed limit of 80 km/hr?

A

150-250 meters

47
Q

where are the warning signs placed on a road with a speed limit of 100+ km/hr?

A

200-400 meters

48
Q

full beams, pedestrian with dark clothing and no reflectors

A

150 meters

49
Q

full beams, pedestrian with reflectors

A

450 meters

50
Q

dipped headlights, pedestrian with reflectors

A

125 meters

51
Q

dipped headlights, pedestrians with dark clothing and no reflectors

A

25 meters

52
Q

dipped headlights, pedestrian with bright clothing and no reflectors

A

60 meters

53
Q

full beams, pedestrian with bright clothing and no reflectors

A

300 meters

54
Q

what percentage of traffic accidents involving pedestrians occur in the dark?

A

50%

55
Q

what is the month range for the most fatal accidents involving pedestrians?

A

november to january

56
Q

what fraction of accidents involving pedestrians occur at or near pedestrian crossings?

A

1/3

57
Q

how does ice affect braking distance, if you have studded tires?

A

2-3x longer

58
Q

how does ice affect braking distances without studded tires?

A

3-4x longer

59
Q

what is the worst temp for black ice?

A

0 degrees celsius

60
Q

at what temp (and below) do roads get slippery?

A

4 degrees celsius

61
Q

during what period are winter tires required (assuming winter conditions)?

A

december 1 to march 31

62
Q

what is the earliest date you can switch to summer tires?

A

october 1

63
Q

what is the latest date on which studded tires are allowed?

A

april 15

64
Q

what is the latest date on which friction tires are allowed?

A

trick question, they can be used year round

65
Q

what is the minimum tread depth for friction tires?

A

3 mm

66
Q

what is a person’s risk of death is they are hit by a car going 50 km/hr?

A

80%

67
Q

what is a person’s risk of death if they are hit by a car going 30 km/hr?

A

10%

68
Q

what is the distance between verge markers on a country road?

A

50 meters

69
Q

what is the distance between verge markers on a motorway?

A

100 meters

70
Q

what is true of road markers on a curve?

A

they may be only 25 meters apart

71
Q

what does a center line with a 1:3 ratio indicate?

A

a speed limit of at least 70 km/hr applies (usually seen on country road)

72
Q

what does a center line with a 1:1 ratio indicate?

A

that the speed limit is 50 km/hr or lower (seen in dense areas)

73
Q

you get your license revoked if you are caught driving this much over the speed limit

A

30 km/hr, unless the speed limit on the road is already 30 km/hr, in which case going 20 over gets you revoked

74
Q

when your BAC is .2, your chance of getting in a fatal accident is X times more

A

10 -12 times

75
Q

about how many people die in alcohol-related accidents each year

A

75

76
Q

who runs the highest risk of having an accident due to fatigue?

A

a man who is 18-24 years old

77
Q

if you’re 18-24, and have a BAC of .5, how increased is your chance of being involved in a traffic accident?

A

900x greater

78
Q

for a driver with a BAC of .5-1, how much more likely is your chance of getting in an accident?

A

13x

79
Q

at a blood alcohol level of 1-1.5, how much increased risk is there of getting in a traffic accident?

A

100 times

körkort (5 decks)

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