Research Article
Causation Analysis of Hazardous Material Road Transportation Accidents by Bayesian Network Using Genie
Table 1
Variables of Hazmat road transportation accidents.
| Factors | Variables | Variables description | Discretization | Frequency | Percentage |
| Hazmat factors | Hazmat categories | Explosives | 1 | 27 | 3.20% | Toxic gases | 2 | 158 | 18.90% | Flammable liquids | 3 | 429 | 51.10% | Corrosives | 4 | 121 | 14.40% | others | 5 | 104 | 12.40% | Quantity of Hazmat | <10 | 1 | 127 | 15.10% | 10-24 | 2 | 284 | 33.80% | 25-39 | 3 | 358 | 42.70% | ≥40 | 4 | 70 | 8.40% | Driver factors | Age | 24-35 | 1 | 144 | 17.20% | 36-45 | 2 | 644 | 76.70% | 46-60 | 3 | 51 | 6.10% | Behaviors | Inappropriate driving | 1 | 13 | 1.50% | Speeding | 2 | 36 | 4.30% | Fatigue driving | 3 | 20 | 2.40% | Normal driving | 4 | 770 | 91.80% | Location factors | Accident location | Group one | 1 | 360 | 42.90% | Group two | 2 | 336 | 40.00% | Group three | 3 | 59 | 7.00% | Group four | 4 | 84 | 10.10% | Special section | Intersection | 1 | 18 | 2.10% | Freeway service areas | 2 | 50 | 6.00% | Toll stations | 3 | 78 | 9.30% | Gas stations | 4 | 23 | 2.70% | Normal | 5 | 670 | 79.90% | Road surface | Dry | 1 | 794 | 94.60% | Wet | 2 | 45 | 5.40% | Environment factors | Season | Spring | 1 | 227 | 27.10% | Summer | 2 | 258 | 30.70% | Autumn | 3 | 186 | 22.20% | Winter | 4 | 168 | 20.00% | Weekly distribution | Weekends | 1 | 198 | 23.60% | Weekdays | 2 | 641 | 76.40% | Weather | Sunny | 1 | 202 | 24.10% | Cloudy | 2 | 347 | 41.40% | Rainy & snow | 3 | 268 | 31.90% | Fog & haze | 4 | 22 | 2.60% | Visibility | dawn | 1 | 94 | 11.20% | day | 2 | 409 | 48.70% | dusk | 3 | 60 | 7.20% | dark | 4 | 276 | 32.90% | Vehicle factors | Total vehicle involved in accident | 1 | 1 | 503 | 59.90% | 2 | 2 | 276 | 32.90% | 3 | 3 | 31 | 3.70% | ≥4 | 4 | 29 | 3.50% | Type of vehicle | Bus & Truck | 1 | 13 | 1.55% | Private cars & Truck | 2 | 42 | 5.01% | Non-motor & Truck | 3 | 11 | 1.31% | Bus&Private cars&Truck | 4 | 10 | 1.19% | Trucks | 5 | 763 | 90.94% | Accidents factors | Accident type | Rear-end | 1 | 189 | 22.50% | Sideswipe | 2 | 20 | 2.40% | Rollover | 3 | 340 | 40.50% | Collision | 4 | 145 | 17.30% | Vehicle failure | 5 | 145 | 17.30% | Accident consequence | Explosion | 1 | 25 | 3.00% | Fire | 2 | 96 | 11.40% | Spill | 3 | 682 | 81.30% | Non-spill | 4 | 36 | 4.30% | Severity of accident | No injury | 1 | 656 | 78.19% | Severe injury | 2 | 139 | 16.57% | Fatality | 3 | 44 | 5.24% |
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