E-hail

Several e-hail services are available in the city, but Uber and Lyft are the most popular. Once you've signed up, a simple tap will search for a car and track it in real time; you pay with a saved credit card.

Uber began as a premium private car service for San Fran techies. Driven by professional drivers and e-hailed through the proprietary app, Uber town cars were more expensive than a taxi, but cheaper than a limousine; […]

It seems rather likely that MaaS implementation may bring an increase of car-based trips (even if shared or e-hailed), and hence result in more emissions and congestions (Eckhardt et al., 2017). First of all, as underlined by Karlsson et al.