High risk behaviors by the driver:
(1) speeding or speeds inappropriate for the driving conditions
(2) running red lights
(3) making illegal turns
(4) riding with an intoxicated driver
(5) tailgating
Interference with mental functioning and/or concentration of the driver:
(1) intoxication with alcohol or illicit drugs
(2) sedating medications
(3) sleepiness, fatigue or physical exhaustion
(4) dementia
(5) anger or other strong emotions
(6) using the cell phone or other distractions (child, moving object in car, etc.)
Medical conditions affecting the driver:
(1) hypoglycemia
(2) acute myocardial infarction or cardiac arrhythmia
(3) epilepsy
(4) acute debilitating viral infection
(5) poor eyesight (including depth perception and contrast sensitivity)
Additional factors (WHO):
(1) driver being a young male
(2) vulnerable road user in an urban or residential area (traffic level dependent)
(3) driving in the dark
(4) driving in fog, rain, snow or other bad weather conditions
(5) problem with the vehicle (brakes, maintenance, physical failure)
(6) problem with road design or layout
(7) problem with road or sign maintenance (absence of stop sign, malfunctioning traffic light)
(8) debris in the road
