Companies such as Uber or Lyft (formally known as "Transportation Network Company Rides" or TNCs), which provide prearranged ground transportation that is booked via an app or a website and connects passengers with drivers who use their own, noncommercial vehicles. Some companies may offer a variant arrangement where the passenger uses an online marketplace to retain a driver who drives the customer's own car for them; and a limited number offer accessible transportation options such as wheelchair accessible vehicles equipped with ramps or hydraulic lifts or door-to-door support for riders who may need help with wheelchairs, walkers and scooters or who have a service animal.