Unit 14 Flashcards
(30 cards)
Emotions are…
A strong feeling such as anger, fear, or joy
What is anger while driving called?
Road Rage
What percent of information while driving is gathered through your eyes?
More than 90%
What is visual acuity?
The ability to see things clearly both near and far away
What is the normal visual acuity?
20/20- 20 feet away from an eye chart
What is the minimum visual acuity needed to drive?
20/40 corrected vision
Twice as close to things than 20/20
What is color vision?
The ability to distinguish one color from another
What is color blindness?
Not being able to distinguish colors
How can a color blind person compensate for their inability to see colors while driving?
Remember the order of the lights in traffic signals
Know the meaning of traffic signs by shape or by reading them all carefully
Check all zones, including left/right/90 degrees before proceeding at traffic signals
Take cues from others
What is your field of vision?
The area you can see around you by looking straight ahead- most people see 90 degrees to each side (half circle)
What is your central vision?
The straight-ahead, 10 degree, clear part of your central vision
What is the are outside your central vision?
Peripheral Vision
What is the peripheral vision closest to the central vision?
Fringe vision
What do you see with your fringe vision?
Side fringe- Monitor a zone condition after it has been identified in the central vision
Upper Fringe- detect changes in the rear-view mirror
Lower fringe- monitor reference points for position
What is tunnel vision?
A narrow field of vision of 140 degrees or less that is compensated with more head and eye movement
What is depth perception?
The ability to judge distance between yourself and other objects
What is night blindness?
Not being able to see well at night
When/How does glare occur?
Night and Day- Bright sunlight or light off of shiny objects
What is glare resistance?
Ability to continue seeing when looking at bright lights
When are you most vulnerable to glare?
Night- your pupils try to take in any available light due to the surrounding darkness
What is glare recovery time?
Time your eyes need to regain clear vision after being affected by glare
Usually 5-10 seconds
What is speed smear?
Objects to your side often become blurred and distorted due to increasing speed
What senses, besides vision, do you use when driving?
Hearing, smell, and sense of motion
What are some temporary disabilities that affect your driving?
Fatigue or temporary illness or injuries
