In face of the threat of a climate catastrophe and the resulting urgent need for decarbonization together with the widespread emergence of the sharing economy, shared pooled mobility has been suggested as an alternative to private vehicle use. However, until now all of its real-life implementations have served a niche market, adjacent to taxi services. To better understand this discrepancy, as well as the potential of pooled mobility, we have here simulated and analyzed pooled mobility on the street network of Berlin with car trip data as input for ride requests. We measure the rate of sharable trips, the relative travel time of passengers, the average occupancy of the vehicles, the relatively driven distance compared to driving with a private vehicle. We observe that for requests in the city center of Berlin it is possible to serve all mobility requests currently done by car, with around 4700 vehicles. The travel time is around 1.34 higher than with a private vehicle, the vehicle's occupancy increases to 2.6. The driven distance is reduced by 65%. In the whole area of Berlin we observe that a ride-pooling system with 10000 vehicles can serve 60% of the trips. The travel time is 1.4 times higher than with a private vehicle, the occupancy gets three and the driven distance is reduced by 40%.

翻译：面对气候灾难威胁及由此产生的脱碳紧迫需求，伴随共享经济的广泛兴起，共享拼车出行已被提议作为私人车辆使用的替代方案。然而，迄今为止，其所有实际应用仍服务于小众市场，与出租车服务相邻。为更好理解这一差异及共享出行的潜力，我们以柏林道路网络为基础，利用汽车出行数据作为乘车请求输入，对共享出行进行了模拟与分析。我们测量了可共享行程的比例、乘客的相对出行时间、车辆平均载客率，以及与私人车辆驾驶相比的相对行驶距离。观察发现，在柏林市中心区域，约4700辆车辆即可满足当前全部汽车出行请求。与私人车辆相比，出行时间增加约1.34倍，车辆载客率提升至2.6人，行驶距离减少65%。在整个柏林地区，我们观察到10000辆车辆的拼车系统可满足60%的出行需求，出行时间为私人车辆的1.4倍，载客率达3人，行驶距离减少40%。