| unload student | 0.63 |
| transport student | 0.61 |
| be an extension of the … | 0.47 |
| drop off child | 0.45 |
| pick up child | 0.40 |
| account for 41 percent | 0.40 |
| make frequent stops | 0.38 |
| collide with truck | 0.34 |
| make sudden u-turn | 0.30 |
| be an extension of scho… | 0.25 |
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| seat belts | 0.53 |
| used to transport child | 0.74 |
| equipped with seat belts | 0.69 |
| equipped | 0.67 |
| stopped | 0.63 |
| involved in accident | 0.54 |
| equipped with a power l… | 0.46 |
| manufactured after july | 0.41 |
| equipped with sign | 0.30 |
| operated | 0.29 |
| filled with fifth-grade… | 0.25 |
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