Table 1.
Location of crash
| Location of crash | No (%) | ||
|---|---|---|---|
| Road Character | Straight and level | 1796 (77.6) | |
| Curve and level | 313 (13.5) | ||
| Straight and grade | 84 (3.60) | ||
| Curve and grade | 122 (5.30) | ||
| Road surface type | Bitumen/asphalt | 1847 (90.4) | |
| Gravel or dirt | 197 (9.60) | ||
| Road surface condition | Dry | 2287 (95.9) | |
| Wet | 59 (2.50) | ||
| Others (i.e. sand, mud, oil, dirt) | 39 (1.60) | ||
| Environment/Weather condition | Clear | 2238 (93.9) | |
| Cloudy/rain/snow | 102 (4.30) | ||
| Others (i.e. blowing sand) | 43 (1.80) | ||
| Road Width | Main road | ≤ 6 m | 57 (5.10) |
| 6–8 m | 935 (85.9) | ||
| 8–10 m | 69 (6.20) | ||
| >10 m | 31 (2.80) | ||
| Side road | ≤ 5 m | 127 (12.7) | |
| 5–6 m | 549 (54.9) | ||
| 6–7 m | 262 (26.2) | ||
| ≥7 m | 62 (6.20) | ||
| Traffic-way description | Two-way, not divided | 1963 (93.3) | |
| Two-way, divided | 88 (4.20) | ||
| One-way | 52 (2.50) | ||
| Road defects (5 common defects) | Narrow width | 978 (40.7) | |
| Defect of vertical signs | 705 (29.2) | ||
| Defect of horizontal signs | 659 (27.3) | ||
| Lack/defect of protection | 446 (18.5) | ||
| Lack of shoulder | 270 (11.2) | ||
| Broken and solid lines marking | Proper | 1436 (60.0) | |
| Improper | 621 (26.0) | ||
| Did not have | 280 (12.0) | ||
| Did not need | 59 (2.00) | ||
| Speed limit at location of crash | ≤ 20 km/h | 66 (3.00) | |
| 20-40 km/h | 372 (17.1) | ||
| 40-60 km/h | 654 (30.0) | ||
| 60-80 km/h | 317 (14.6) | ||
| 80-90 km/h | 463 (21.3) | ||
| >90 km/h | 306 (14.0) | ||