<img src='https://i.cbc.ca/1.4635380.1524686362!/cpImage/httpImage/image.jpg_gen/derivatives/16x9_460/ride-hailing-health-care-q-a.jpg' alt='Ride Hailing Health Care Q A' width='460' title='In this Jan. 31, 2018, file photo, a Lyft logo is installed on a Lyft driver's car next to an Uber sticker in Pittsburgh. Lyft and Uber are expanding deeper into health care by offering to take more patients to and from non-emergency medical appointments in markets around the country. ' height='259' /> Some ridesharing companies now require rest periods after extended driving shifts, but it can be difficult to enforce and doesn't sufficiently address driver safety, U.S. sleep medicine society says.