Chapter 7 Flashcards
Importance of Vision
Effective use of vision is critical to safe driving
Most important human sense to the driving task
60% of the human brain devoted to vision
Q.5 _____is the imaginary
b. Line of sight
(can be blocked by obstacles)
When drivers line of sight & path of travel is blocked
Decide on lane position & speed adjustments to handle hazards.
3 Types of Vision
Central Vision (Tunnel Vision)
Fringe Vision
Peripheral Vision
Central
Provides detail of objects
(Front)
Only 3% of drivers tot vision field
Fringe or focal vision
Judges depth and position
(45 degree angles)
Peripheral Vision
Detects changes in color and object movement (The 30 degrees)
Q1. If you employ a good visual search while driving, You will
c. Be searching 20 to 30 seconds ahead of your vehicle
Searching
For threatening objects or conditions in traffic depend most upon keeping your eyes moving
Q.4. The most common form of colorblind was is the inability to distinguish between
d. Green & blue
Color Blindness
Inability to distinguish among colors, driving with colorblindness uses sign shapes as cues to drive safely
Organizing Your Brain
Perceive- Decide-Act
IPDE
Identify- Predict-Decide-Execute
SIPDE
Search-Identify-Predict-Decide-Execute
SEE
Search-Evaluate-Execute
Searching
Looking far, near, side to side, and the best way to keep from getting involved in emergency driving situations.
Visual Lead
20-30 seconds ahead
Visual Control Zone
Adjust speed direction time to safely and smooth let move or slow down
12-15 seconds
Final Response
4-6 Seconds
Sudden Braking
Not searching far enough ahead
Visual Checks
look left or right when changing lanes cause it does not appear in mirrors
Q.3. To check your mirror blind areas, you should
a. Turn your head & check your shoulder in the direction of the blind area
Q.2. When using ground viewing you are not looking for
b. The color of a vehicle to your side
Ground Viewing
Search the ground directly ahead and to sides
Locate markings or unusual road conditions
Shadow on pavement can indicate a slick spot