Chapter 4 & 5 Driver Ed
what is the average reaction time of a driver
3/4 of a second
if you are traveling 65mph how long will it take to stop your vehicle
300 feet
is a quick stop or slow stop worse?
Quick stop
define depth perception
ability to judge distance between objects
define separating hazards
adjust speed to handle only one at a time
list the 5 steps to the smith system
aim high in steering keep eyes moving get the big picture make sure others see you leave an out
define field of vision
area you can see while looking ahead
give 10 step example of an orderly search pattern
check ahead rearview mirror check ahead vehicle surroundings check ahead check speed check ahead side mirrors check ahead rearview mirror
define reaction distance
distance traveled from identifying to responding
define braking distance
distance vehicle travels from the time you apply the brakes until it stops
list 4 factors that contribute to braking distance
driver reaction road surface/weather conditions vehicle condition;poor=longer load;double weight=double stopping distance
define friction
force that keeps each tire from sliding
define gravity
force that pulls all things toward earth
define impact force
force with which one moving object hits another moving object
what are the 6 driving zones around your vehicle
front left front right front rear left rear right rear
define compromising hazards
give more space to the greater hazard
define traction
gripping power between the tires and roadway
define tread
grooved surface of the tire
define sight distance
how far you can see ahead
define reaction time
how long it takes to respond after identifying hazard
what are the two types of conflict
immediate potential
what are the two main types of driving zones
open zone closed zone
define safe path of travel
path free of conflict, risks, and hazards
define orderly search pattern
process of searching critical areas in a regular sequence using short glances
define minimizing hazards
put more distance between yourself and a hazard
list 5 energy absorbing car features
seat belt air bag reinforced windshield front and rear crush zones side door beams
list 3 main factors that determine amount of impact force
speed weight distance between impact and stop
what are the 2 parts of kinetic energy
speed and weight
define perception distance
the distance your vehicle travels while you see and identify
what is kinetic energy
the energy an object has as it moves
define total stopping distance and the the 3 steps that make it up
the total distance your vehicle takes to stop from the time you identify until vehicle is at stopping point 1.) perception 2.) reaction 3.) braking
