| Total crash number | Rear-end |
| Cluster | Month | Avg. crash number | Risk level | Cluster | Month | Avg. crash number | Risk level | 1 | 1 | 46.5 | 3 | 1 | 1, 8, 9, 10, 11 | 12.0 | 3 | 2 | 5, 6, 7, 8 | 44.8 | 3 | 2 | 3, 4, 5, 6, 12 | 9.2 | 2 | 3 | 10, 11 | 40.3 | 2 | 3 | 2, 7 | 8.1 | 1 | 4 | 3, 4, 9 | 38.9 | 1 | | | | 5 | 2, 12 | 38.4 | 1 | | | |
| Fixed-object hitting | Overturning |
| Cluster | Month | AVG crash number | Risk level | Cluster | Month | AVG crash number | Risk level | 1 | 6, 7, 8 | 28.5 | 3 | 1 | 10 | 7.3 | 3 | 2 | 1, 2 | 26.1 | 3 | 2 | 5, 6, 7, 8, 11 | 4.8 | 2 | 3 | 3, 4, 9 | 21.6 | 2 | 3 | 2 | 4.5 | 2 | 4 | 12 | 21.3 | 2 | 4 | 3, 9, 12 | 3.7 | 1 | 5 | 5, 10, 11 | 20.2 | 1 | 5 | 1, 4 | 3.0 | 1 |
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