Final answer:
The driving hours of a GDL Examination Permit or Probationary holder (under 21 years of age) are usually restricted to certain hours, typically excluding nighttime hours. Additional restrictions may include limits on passengers and the use of electronic devices while driving.
Step-by-step explanation:
The driving hours of a GDL Examination Permit or Probationary holder (under 21 years of age) are typically restricted to certain hours to promote safety and reduce the risk of accidents. The specific restrictions may vary by state, but they generally limit driving during nighttime hours, usually between midnight and 5 a.m. Some states may also impose restrictions on the number of passengers a young driver can have in the car and the use of electronic devices while driving.