  With proper management, Autonomous Mobility-on-Demand (AMoD) systems have
great potential to satisfy the transport demands of urban populations by
providing safe, convenient, and affordable ridesharing services. Meanwhile,
such systems can substantially decrease private car ownership and use, and thus
significantly reduce traffic congestion, energy consumption, and carbon
emissions. To achieve this objective, an AMoD system requires private
information about the demand from passengers. However, due to
self-interestedness, passengers are unlikely to cooperate with the service
providers in this regard. Therefore, an online mechanism is desirable if it
incentivizes passengers to truthfully report their actual demand. For the
purpose of promoting ridesharing, we hereby introduce a posted-price,
integrated online ridesharing mechanism (IORS) that satisfies desirable
properties such as ex-post incentive compatibility, individual rationality, and
budget-balance. Numerical results indicate the competitiveness of IORS compared
with two benchmarks, namely the optimal assignment and an offline,
auction-based mechanism.
