Human & Environmental Factors

Human & Environmental
Factors
Factors causing accidents
Human Factors Environmental Vehicle Factors
Factors
Driver behaviour/error Weather conditions Type/ condition of
Anger/ road rage Design of roadways vehicle
Drug/ alcohol use Condition of roadways Tyre defects
Fatigue Seat belts
Distractions Airbags
(passengers, radio, Crumple zones
mobile phones, Overloading
environmental)
Impairments (medical,
eyesight etc)
Medical Conditions
(heart attack, stroke,
seizure)

Human factors
Driver behaviour/ driver error
 Inexperienced
 Speeding: loss of control of car, stopping distances increased,
damage and injuries are much worse
 Stress/rage
Eyesight
 Driver has an inability to see or react to hazards in a timely
manner.
 Can struggle with ‘glare’ – either on sunny days, driving at
night and driving in snow/ice
Environmental Factors
Weather conditions
 Can increase stopping times
 Road surface
 Affect visibility
 Distractions
 Inexperienced drivers
Rain
 Visibility
 Noise
 Distractions