Table 1. Frequency distribution of traffic accidents based on the environmental related risk factors.
| Variable | Accidents causing | Total (%) | P | |
|---|---|---|---|---|
| Injury or death | No injuries | |||
| Light condition | ||||
| Day | 970 (58.4) | 689 (41.5) | 1659 (100) | |
| Night | 350 (65.3) | 186 (34.7) | 536 (100) | 0.003 |
| Sunrise | 11 (57.8) | 8 (42.1) | 19 (100) | |
| Sunset | 59 (73.7) | 21 (26.2) | 80 (100) | |
| Total | 1390 (60.5) | 904 (39.4) | 12294 (100) | |
| Driver’s visual condition | ||||
| Visual obstruction (yes) | 22 (40.7) | 32 (59.2) | 54 (100) | |
| Visual obstruction (No) | 1260 (59.0) | 873 (40.9) | 2133 (100) | 0.007 |
| Total | 1282 (58.6) | 905 (41.3) | 2187 (100) | |
| Accident’s location | ||||
| Road | 1050 (59.5) | 712 (40.4) | 1762 (100) | |
| Verge | 59 (48.3) | 63 (51.6) | 122 (100) | <0.05 |
| Edge of the road | 170 (57.2) | 127 (42.7) | 297 (100) | |
| Total | 1279 (58.6) | 902 (41.3) | 2181 (100) | |
| Sort of the track | ||||
| Highway | 3 (21.4) | 11 (78.6) | 14 (100) | |
| Avenue | 688 (73.2) | 251 (26.8) | 939 (100) | |
| Main road | 471 (50.5) | 462 (49.5) | 933 (100) | 0.001 |
| Sidetrack | 333 (54.5) | 194 (45.5 ) | 427 (100) | |
| total | 1395 (60.3) | 918 (39.7) | 2313 (100 | |