Fig. 8: Dynamic carpooling result of the 5-min time granularity.
From: Estimating emissions reductions with carpooling and vehicle dispatching in ridesourcing mobility

Real-world ride-hailing orders are used to evaluate the order matching performance with indicators on (a) number of orders, (b) number of orders after carpooling, (c) time delay, (d) saving time, (e) saving distance, (f) passenger waiting time. Time delay refers to the difference between the expected arrival time at the destination with carpooling and the actual arrival time. Saving time and distance signifies the time and distance saved through carpooling. Carpooling may slightly increase the waiting time for the second passenger compared to the actual pick-up time.