module 3.2 quiz Flashcards

1
Q

visual perception

A

the eyeball’s ability to distinguish the number, shape, and color of an object, and perception

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2
Q

drivers make make decisions based on about blank on what they see

A

90%

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3
Q

drivers make decisions based on blank of what they hear or feel

A

10%

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4
Q

drivers should search at least blank seconds ahead of their path of travel to evaluate the situation and make good decisions about speed, lane position, signs, signals, markings, and potential hazards

A

20

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5
Q

you need to know where to blank

A

look

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6
Q

focal vision

A

allows you to read/see details

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7
Q

paracentral vision

A

allows you to maintain path of travel

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8
Q

peripheral vision

A

allows you to see motion and color

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9
Q

visually acuity

A

tests measure the level of detail your eyes can see (individually and together) in optimal light conditions

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10
Q

nearsighted

A

able to see near things more clearly than distant ones

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11
Q

farsighted

A

able to see distant things more clearly the near ones

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12
Q

hazards of driving at night

A

lack of light drastically reduces field of vision, visual acuity, depth perception, and color recognition

nocturnal and crepuscular wildlife become active

people driving at night are more likely to be intoxicated

inner and outer sources of concentrated light cause glare

people driving at night are more likely to be fatigued

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13
Q

strategies for driving at night

darkness

A

drive slower to allow more time to react

use focal and paracentral vision

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14
Q

strategies for driving at night

glare

A

oncoming headlights: avert your gaze to line painted on right side of road

internal light: keep it dark in the vehicle when it’s dark outside

sunbeams: keep windows, headlights, and signal lights clean inside and out

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15
Q

strategies for driving at night

animals

A

use your high-beams on rural roads

pay attention to animal crossing signs

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16
Q

strategies for driving at night

people

A

watch for a erratic driving behaviors from other vehicles on the road

stay away from drivers exhibiting signs of distraction, intoxication, or fatigue

17
Q

factors that affect vision

A
glare
fatigue
drugs/alcohol
weather
darkness
speed
inattention
smoke
age
dirty windshield
poor windshield wipers
poor night vision
night blindness
18
Q

speed that effects vision

A

hazards that increase with the increased speed

drivers have less time to see and react

minor steering movements cause exaggerated vehicle movements and weight shift

speed distorts and reduces peripheral vision up to 90%

19
Q

how do you compensate for higher speeds?

A

train your eyes to look farther ahead—you’re covering ground faster

allow more space between your vehicle and others

actively move your eyes from one side of the path of travel to the other to search for relevant information and hazards

20
Q

need blank eyes to perceive depth (3-D distance)

A

both

21
Q

depth perception allows you to perceive blank, blank, and blank of other vehicles and hazards in the traffic environment

A

gaps
speed
distance

22
Q

depth perception is blank when passing, approaching a vehicle or hazard; turning, merging, and crossing intersections

A

essential

23
Q

to judge the distance between vehicles, look at where the tires contact the road, not the blank of the vehicle

A

body

24
Q

you have to have paracentral vision for blank

A

depth perception

25
Q

how can you improve your visual field?

A

clean windows—inside and out

clean vehicle’s outside lights and make sure they work

inspect wiper blades for damage and effectiveness

adjust mirrors properly

keep sunglasses and windshield scraper in vehicle

remove objects that interfere with vision

26
Q

explain how the eyes don’t tell the brain what they see—the brain tells the eyes what to look for

A

your eyes don’t wander around because your brain is telling them what to do