Under what condition is a commercial driver legally permitted to take a reduced weekly rest period of at least 24 hours under AETR?

1. Provided that in any two consecutive weeks, the driver takes at least one regular rest (45h) and one reduced rest (24h), with the reduction compensated in a single block before the end of the third following week
2. A driver may take 24-hour rests every week permanently with no compensation
3. Reduced weekly rest is permitted only in December
4. Reduced weekly rest is permitted only if the truck has leather seats