IPDE PROCESS - Community Unit School District 200

Question that could be on your test!
• What is the Smith System?
• An organized system to develop good
seeing habits.
• What is Commentary driving?
• Thinking out loud!
• What is an orderly visual search pattern?
• A process of searching critical areas in a
regular sequence.
The Smith System
Aim High in steering!
Get the Big Picture
Keep Your Eyes Moving
Leave Yourself an Out
Make sure they see you
Before you start
The Driving Risk
• Driving can be the most dangerous thing
you will do.
• What are some risks coming from the
Risk Factors of Vehicle
Bald Tires
Poor brakes
Dirty windows
Worn wiper blades
Broken headlights
Risk Factors of Roadway and
Bright sun
Dark shadows
Snow and ice
Sharp curve
Steep hill
Look where you want to go
The IPDE Process will help you
lower the Risk of Driving
• Good seeing habits and your ability to
manage space are the basic tools for low
risk driving.
• The IPDE Process is an organized
system of seeing, thinking and
• The four steps of the IPDE Process are:
Identify Predict Decide and Execute
What are you trying to identify?
Open and closed zones
Specific clues
Other roadway users
Roadway features and conditions
Traffic controls
What can you Identify?
I have cars & trucks
all around me. I must
keep a space
cushion and identify
• Use knowledge, judgment and experience
to predict:
• The actions of others
• Speed
• Direction
• Control
• Points of conflict
What do you Identify and Predict?
Four way stop, stop line, School zone-20 MPH, other vehiclesSchool Bus, Crossing guard
What do you Identify and Predict?
• Once you have Identified a situation and
Predict a possible conflict, you then
Decide upon an action.
• Deciding is a very important mental task.
• You must continually Identify and Predict
until you have enough information to make
correct decisions.
• Carrying out your decision to avoid a
conflict is the Execute step in the IPDE
• This is the physical step of IPDE.
• The important actions you can execute
are: control speed, steer, and
• Other actions include: using the heater,
defroster, and wipers.
Control Speed
• You may speed up to avoid a hazard.
• You may slow down or stop to avoid a
hazard. Check your rear zone when
• Don’t lock up your brakes!! Can not steer!
• Sometimes you keep the same speed.
The best position for normal
When would you drive
in position 2?
When would you ride in
lane position 3?
Traffic Flow
• Minimize a Hazard - Moving away from a
parked car or bike rider.
• Separate Hazards - More than one
hazard, adjust your speed to deal with one
hazard at a time.
• Compromise space - You cannot
minimize or separate, decide to move
away from the greater hazard toward the
lesser hazard.
Minimize a Hazard
Separate The Hazards
Compromise Space
• Move away from the greater hazard (truck)
toward a lesser hazard
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