18 terms

Chapter 4: IPDE

Open Zone
space where you can drive without a restriction to your line of sight or path of travel
Line of Sight
the distance you can see ahead in the direction you are looking.
Path of Travel
space your vehicle will occupy as you travel ahead.
Target Area
section of roadway where the target is located and the area to the left and right of the target area.
Closed zone
Space not open to one because of a restriction in your line of sight or intended path of travel
Target area range
space from your vehicle to the target area
12- 15 second range
The range you should hold when driving in hazardous conditions
4-6 second range
The normal range you should hold when driving in fair conditions
orderly visual search pattern
a process of searching critical areas in a regular sequence
Field of Vision
the area you can see around you while looking straight ahead
Central Vision
Cone-Shaped area of up to 10 degrees in your field of vision in which you can see clearly while looking straight ahead
PEripheral Vision
area a person can see to the left and tight of central vision
"Aim High" in steering
looking ahead 12-15 seconds in the target area
ground viewing
making quick glances to the roadway in front of your vehicle
friction between tires and the roadway
speed cushion
the open area around a vehicle consisting of adequate following distance between it and vehicles ahead and behind, plus swerve paths to left and right
minimize a hazard
Reduce the possibility of conflict by putting more space between your vehicle and the hazard
compromise space
reduce risk by giving as much space as possible to the greater of two or more hazards