| KSS | Karolinska Sleepiness Scale |
| DSS | Driver Sleepiness Scale |
| GSQS | Groningen Sleep Quality Scale |
| MCTQ | Munich Chronotype Questionnaire |
| KSS | Karolinska Sleepiness Scale |
| DSS | Driver Sleepiness Scale |
| GSQS | Groningen Sleep Quality Scale |
| MCTQ | Munich Chronotype Questionnaire |