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Collision Investigation - The use of science
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class notes on Collision Investigation and the use of science These notes were used towards my final grade of D*D*D*
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Collision InvestigationReaction Times
The time a driver would need to react to something prior to the physical
action of braking and/ or steering.
This is the time taken for the driver to identify a hazard, formulate a
response and apply that response. In most cases braking and/or steering
but may be other things.
Collision Investigation
Reaction time is 1-2 seconds
This time could be extended due to a number of factors
Factors affecting reaction time
Fatigue
Repetitive
Tedious
Monotonous
Nighttime driving
Rain
Fog/visibility
Snow
Distraction
Hazard visibility
Highway Code
Thinking time is 0.67 seconds
Following studies increased to 1.49 seconds
Uses distances now instead of time
Driver Factors - Dangerous
distractions
Mobile phones
Drink driving
Drug driving
Infotainment systems
In car distractions
Speed
Tiredness
Injury
Sight impairment
Pedestrian walking speeds
CCTV of the pedestrian
Knowledge of the pedestrian’s mannerisms, illness, frailty, walking
speed
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