| occur | 0.68 |
| occur in the united sta… | 0.30 |
| involve motorcycle | 0.16 |
| involve pedestrian | 0.16 |
| devastating | 0.50 |
| serious | 0.44 |
| unique | 0.37 |
| deadly | 0.31 |
| common | 0.21 |
| death | 0.64 |
| serious injuries | 0.60 |
| catastrophic injuries | 0.31 |
| on the rise | 0.16 |
| caused by driver error | 0.45 |
| likely to result | 0.21 |