TRAFFIC CRASH INVESTIGATION (TEST 1)
ACTUAL EXAM QUESTIONS WITH VERIFIED
ANSWERS
What to measure
-Location of physical evidence
-Anything that was not there prior to crash but is there as a result of crash
-The "cone of debris,"
-Vehicles, bodies, tire marks, blood, debris, etc.
-Roadway configuration
-lane distances
-How far from the curve edge is the fog line, how far is center line from fog line, the width of the
road
-(Anything measured should be on FIELD SKETCH)
Cone of debris
Tells the direction and the general area where the impact occurred.
Why do we take measurements
-Assist in determining circumstances of the crash, where, how, why crash involved
-Assist in understanding photograph relationships
-Able to create a scale diagram
-Enables you to testify with accuracy and confidence regarding the location of evidence at crash
-Assists in establishing the cause of the crash
OFFICAL ORDER 06-26
-Chapter-Traffic Enforcement and Crash Investigation
-Section-Crash Reconstruction Program
What types of crashes do we measure
-Fatal, cmv (commercial motor vehicle), MVC
-Serious damage
-Property damage
-Extensive damage
-Department vehicles used
Tapes measures for traffic investigations are graduated in
.10's of a foot
Urgent measurements- first priority
, -tire marks, roadway changes like debris and car positioning
-disappearing evidence that are degradable
-(Only moving vehicle if it is to save someone's live)
Non-urgent measurements
-If cars, especially one that not going anywhere
-Trees, deer, etc. stoplights
-Stop sins, merging sign speed limit
-Somewhat permanent in nature
Field Notes
-Assisting officer's names
-Roadway surface conditions, condition and type of traffic control devices, weather and lighting
conditions
-Table of measurements
-Done at every serious crash and contains permanent information worth noting
-Direction of cars
-Anything else you feel is important
Can you redo your field nots
You never (Always keep them because you never know when you'll need down the road for
court)
Field Sketch
-contains crash scene evidence
-Freehand sketch of crash scene, drawn at the scene -Shows relationship of physical evidence to
the scene as best as you can but NOT to scale
-Evidence at the scene physical, factual items observed
-Vehicle and body locations
-Tire marks and configuration
-Gouges and scrapes
-Debris
-Reference points and reference lines used for measure
Reference points
-Examples: Tree, Fire hydrant, sewer gate, poles, edge of buildings. If nothing is around you can
make your own points like putting a nail in the ground.
-Reference points are used to help locate where objects are, that's why they are "Permanent"
Making the field sketch
ACTUAL EXAM QUESTIONS WITH VERIFIED
ANSWERS
What to measure
-Location of physical evidence
-Anything that was not there prior to crash but is there as a result of crash
-The "cone of debris,"
-Vehicles, bodies, tire marks, blood, debris, etc.
-Roadway configuration
-lane distances
-How far from the curve edge is the fog line, how far is center line from fog line, the width of the
road
-(Anything measured should be on FIELD SKETCH)
Cone of debris
Tells the direction and the general area where the impact occurred.
Why do we take measurements
-Assist in determining circumstances of the crash, where, how, why crash involved
-Assist in understanding photograph relationships
-Able to create a scale diagram
-Enables you to testify with accuracy and confidence regarding the location of evidence at crash
-Assists in establishing the cause of the crash
OFFICAL ORDER 06-26
-Chapter-Traffic Enforcement and Crash Investigation
-Section-Crash Reconstruction Program
What types of crashes do we measure
-Fatal, cmv (commercial motor vehicle), MVC
-Serious damage
-Property damage
-Extensive damage
-Department vehicles used
Tapes measures for traffic investigations are graduated in
.10's of a foot
Urgent measurements- first priority
, -tire marks, roadway changes like debris and car positioning
-disappearing evidence that are degradable
-(Only moving vehicle if it is to save someone's live)
Non-urgent measurements
-If cars, especially one that not going anywhere
-Trees, deer, etc. stoplights
-Stop sins, merging sign speed limit
-Somewhat permanent in nature
Field Notes
-Assisting officer's names
-Roadway surface conditions, condition and type of traffic control devices, weather and lighting
conditions
-Table of measurements
-Done at every serious crash and contains permanent information worth noting
-Direction of cars
-Anything else you feel is important
Can you redo your field nots
You never (Always keep them because you never know when you'll need down the road for
court)
Field Sketch
-contains crash scene evidence
-Freehand sketch of crash scene, drawn at the scene -Shows relationship of physical evidence to
the scene as best as you can but NOT to scale
-Evidence at the scene physical, factual items observed
-Vehicle and body locations
-Tire marks and configuration
-Gouges and scrapes
-Debris
-Reference points and reference lines used for measure
Reference points
-Examples: Tree, Fire hydrant, sewer gate, poles, edge of buildings. If nothing is around you can
make your own points like putting a nail in the ground.
-Reference points are used to help locate where objects are, that's why they are "Permanent"
Making the field sketch
