From: Modeling road traffic fatalities in Iran’s six most populous provinces, 2015–2016
Factor | Type of factor | Most dangerous category | OR (95% CI) |
---|---|---|---|
Passenger include | Passenger level | presence of passenger | 4.95 (4.54 to 5.40) |
Pedestrian include | Pedestrian level | presence of pedestrian | 2.60 (1.75 to 3.85) |
Lightning status | Crash level | night | 1.64 (1.52 to 1.76) |
Weather | Crash level | rainy | 1.32 (1.06 to 1.64) |
Intersection control | Crash level | no intersection control | 1.40 (1.29 to 1.51) |
Line marking | Crash level | double solid line | 2.21 (1.31 to 3.75) |
Road material | Crash level | asphalt | 1.95 (1.39 to 2.73) |
Land use | Crash level | nonresidential | 2.15 (1.93 to 2.40) |
Crash mechanism | Crash level | involving vulnerable road users crash | 1.70 (1.50 to 1.92) |
Human factor | Crash level | presence of human factor | 1.13 (1.03 to 1.23) |
First cause | Crash level | multiple factors | 2.81 (2.04 to 3.87) |
Prior cause | Crash level | other factors (e.g., fatigue and drowsiness, lack of skill in diagnosing traffic situation, slippery or tarred road surface, etc.) | 1.48 (1.27 to 1.72) |
Direct cause | Crash level | irregulation | 1.35 (1.20 to 1.51) |
Collision type | Crash level | head-on collision | 3.35 (2.85 to 3.93) |
Crash province | Crash level | Isfahan | 1.95 (1.69 to 2.24) |
Commuting area | Crash level | suburban | 3.26 (2.65 to 4.01) |
Road type | Crash level | expressway | 1.84 (1.59 to 2.13) |
Road shoulder | Crash level | unpaved | 1.84 (1.63 to 2.07) |
Road design | Crash level | unseparated two-way road | 1.40 (1.26 to 1.56) |
Road defect | Crash level | multiple defects | 2.00 (1.67 to 2.39) |
Vehicle type | Vehicle level | heavy vehicles | 1.40 (1.26 to 1.56) |
Vehicle color | Vehicle level | dark colors | 1.26 (1.17 to 1.35) |
Vehicle life | Vehicle level | 15yrs and more | 1.46 (1.27 to 1.67) |
Vehicle plaque description | Vehicle level | not personal regional plaques | 2.73 (2.42 to 3.09) |
Vehicle maneuver | Vehicle level | maneuver such as stopping outside of the road, sudden starting, sudden stopping, overtaking, spiral movement | 3.84 (2.72 to 5.44) |
Driver education | Driver level | non-academic | 1.58 (1.33 to 1.88) |
Driver job | Driver level | jobs with low income | 2.48 (1.95 to 3.15) |
Driver age | Driver level | elderly | 1.50 (1.26 to 1.77) |
Driver license | Driver level | no license | 3.93 (2.51 to 6.15) |
Driver seat belt | Driver level | not used | 1.55 (1.44 to 1.67) |
Driver judiciary cause | Driver level | causes such as unconscious, lack of driving skills, violation of the law | 1.67 (1.44 to 1.94) |
Driver misconduct | Driver level | misconducts such as failure to yield right-of-way, failure to yield right-of-way, failure to distance control while overtaking, running red light, passing the prohibited place, illegal overtaking, turning left or right in the prohibited place, turning in the prohibited place, drunken driving, lack of safety equipment for the season, not turning on the lights from sunset to sunrise, not using glasses while driving, defective vehicle lighting system at night, demonstrative movement, crossing the sidewalk | 2.51 (2.39 to 2.88) |