Do Greyhound bus drivers drive through 10 hr bus trips without rest in between the time period? Is rest every several hours for bus drivers ?

In 1989, I chartered a Greyhound bus to take a group from Ottawa to Boston and back.

On the return trip, the first driver picked us up at our three hotels in downtown Boston, and, as that driver was not licensed to drive in New Hampshire, they drove our bus due west to Albany, NY.

There, a second driver took over and drove the bus to Montreal, Quebec.

There, a third driver took over and drove us to Ottawa. As this was now in the AM hours, and as there would be no local transit to carry members of our travel group home from several pickup/drop off spots, I arranged with the driver to take us on a route across Ottawa that I worked out, that got everyone within a block or two of their homes.

That took two hours to cross Ottawa, from east to west, and when we got to my neighborhood, we were down to three passengers, myself included. We policed the bus, making such no stuff of our group's was still aboard and released the bus for the return empty trip back to Montreal. One of the other two was staying at my home, and the third was the only one of the group who lived west or me, so I drove her back to her place, and came back home.

Thus, the longest stretch of drive time for any of the Greyhound drivers on that return leg was around 7 hours.

Bus drivers do have to take mandatory breaks

My father was a bus driver for Greyhound for 38 years. Federal regulations prohibit driving too many hours without rest. For example, a bus route from Los Angeles to New York City. The first driver drives to Flagstaff, where they switch drivers and proceed. The first driver spends the night in Flagstaff, then drives back to Los Angeles the next day. When my dad was driving, he'd make 5 round trips, then have a few days off. Then the cycle starts all over again.

They must rest 8 hours after 10 hours of driving

https://www.fmcsa.dot.gov/regulations/hours-servic...