What are the driving hour restrictions for a holder of a validated GDL permit who is 21 years of age or older?

For a holder of a validated GDL (Graduated Driver License) permit who is 21 years of age or older, there are no restrictions on driving hours. This means that they are allowed to drive at any time during the day or night without being subject to curfews. The rules surrounding GDL permits mainly focus on younger drivers, specifically those under 21, who have more stringent hour limitations to promote safe driving habits during the late-night hours when the risk of accidents tends to increase. The absence of driving hour restrictions for individuals aged 21 and older recognizes their maturity and legal capacity to handle the responsibilities that come with driving.