| Typicality: | 0.668 |
| Saliency: | 0.676 |
| behind the wheel | 9 | location |
| to their surroundings | 9 | transitive-object |
| during the long hours | 9 | temporal |
| driver → stay → alert | 116 |
| driver → remain → alert | 96 |
| driver → keep → alert | 5 |
| driver → maintain → alertness | 4 |
| negative | neutral | positive |
| 0.114 | 0.632 | 0.254 |
| Raw frequency | 221 |
| Normalized frequency | 0.676 |
| Modifier score | 0.900 |
| Perplexity | 75.770 |