Final answer:
The question is about state or regional requirements for supervised practice driving, including how many of the total hours must be at night, which is often mandated for new drivers.
Step-by-step explanation:
The question pertains to the requirements for supervised practice driving, specifically regarding the total number of hours and the subset of these hours that must be conducted at night. The precise number of night-time hours isn't provided in the question, but typically this requirement is set by individual states or regions to ensure that new drivers have experience driving under different conditions before being eligible for a driver's license.