Yes, the restart provision is optional. For example, a driver who works 8 hours per day, 7 days per week, would never need to use the restart provision because he/she would never reach the 60- or 70-hour limit.
SAT. The SAT is a standardized test for most college admissions in the United States. The SAT is owned, published, and developed by the College Board, a nonprofit organization in the United States.
Serial Advanced Technology Attachment Not sure in which context you mean but the normal meaning of SATA is Serial ATA which is the type of transfer architeture insife the PC from the motherboard to the Hard drive.