| You have better visibility | |
| The law requires it | |
| The driver`s side mirror provides less distortion | |
| You can back more quickly |
| A partially full vehicle | |
| A full vehicle | |
| An empty vehicle | |
| All of these require the same stopping distance |
| Within the first 25 miles of the trip and every 200 miles or 4 hours thereafter | |
| Within the first 25 miles of the trip and every 100 miles or 2 hours thereafter | |
| Within the first 25 miles of the trip and every 150 miles or 3 hours thereafter | |
| Within the first 25 miles of the trip and every 250 miles or 5 hours thereafter |