Mailing from coast-to-coast sounds like it would take a long time, but there are regular flights cross-country, and the sorting facilities bring mail to the middle of the coast, and then ship it straight across, east or west, depending. This means that the mail has to go first to a central sorting facility.
Truck and bus drivers must generally take a minimum of eight hours off between shifts, and their shift hours are often capped. Airline pilots are required to have 10 hours off between shifts to allow for transportation and rest time.
Jetta Productions/Iconica/Getty Images. 1  Drivers may drive up to 11 hours but are limited to 14 hours in a duty period. 2  Drivers must take a mandatory 30 minutes break by their eighth hour of coming on duty. 3  The 14-hour duty period may not be extended with off-duty time for breaks, meal and fuel stops, etc.