This paper explores whether upper bound guarantees to detour distances can be introduced in ride sharing services. By ride sharing we mean taxi ride aggregation services such as Uber-Pool. The paper develops an analytical model that for a given demand relates the guarantee levels to (i) the percent of rides that can be matched, (ii) the expected vehicle distance traveled; (iii) the expected passenger distance traveled; (iv) the fleet size required, and (v) the average passenger trip time including waiting and riding. The formulas developed reveal that for the full range of feasible fleet sizes, ridesharing with detour distance guarantees outperforms both ordinary ride-sharing and ordinary taxi. This suggests that there is a business opportunity that is not currently being exploited.

本文探讨了是否可以在乘车共享服务中引入绕行距离的上限保证。乘车共享是指出租车乘车聚合服务，例如Uber-Pool。本文开发了一种分析模型，该模型针对给定需求将保证水平与（i）可以匹配的乘车百分比，（ii）预期的行车距离相关；（iii）预期的旅客旅行距离；（iv）所需的机队规模，以及（v）平均旅客旅行时间，包括等候和乘坐。得出的公式表明，对于所有可行的车队规模，具有tour回距离的乘车共享保证优于普通乘车共享和普通出租车。这表明存在当前未被利用的商机。