A coach driver takes a 30-minute break after 3 hours of driving, then another 15-minute break after 1 hour 20 minutes more driving. Under assimilated rules, what is the issue?

1. The breaks are valid because they total 45 minutes
2. The split is invalid because the second part must be at least 30 minutes after a first part of at least 15 minutes
3. The driver needed only 30 minutes because the route was domestic
4. The breaks are invalid because no split breaks are allowed