(1)

The hours of work of an adult motor transport worker shall, except in any case referred to in the second proviso to section 13, be so arranged that inclusive of interval for rest under section 15, they shall not spread-over more than twelve hours in any day.

(2)

The hours of work of an adolescent motor transport worker shall be so arranged that inclusive of interval for rest under section 14, they shall not spread-over more than nine hours in any day.