A driver's work shift began 15.75 hours ago after eight consecutive hours off duty. The driver has not exceeded daily driving or on-duty limits. What happens in 15 minutes?

1. The driver reaches the 16-hour elapsed limit and may not drive until another qualifying eight-hour off-duty period
2. The driver automatically resets Cycle 1
3. The driver gains two extra driving hours
4. Nothing, because elapsed time is not tracked