| Reason | Number |
| Obtain peace and calm | 14 |
| Keeps you awake | 34 |
| Addiction | 6 |
| Relieves fatigue | 26 |
| Difficult driving without drug | 33 |
| Pleasure while driving | 22 |
| Do not know | 5 |
| Feels relaxed and drives easier | 27 |
| Makes one drive faster | 25 |
| Stay awake for hours | 47 |
| Pressure from car owners | 27 |
| No policy or punishment | 9 |
| No regular check points | 12 |
| Weight control behaviour | 13 |