“…Ride-hailing papers (N = 28) tend to report negative results, mainly due to users displacing low emissions modes of transport such as walking and public transportation (Rayle et al 2016, Tirachini et al 2020, Schaller 2021, Shi et al 2021, induced travel (Rayle et al 2016, Gehrke et al 2019 and added operations in the form of dead-head miles, where drivers drive around to pick up passengers potentially doubling the distance traveled (Oviedo et al 2020, Tirachini et al 2020, Schaller 2021. In contrast, ride-sharing papers (N = 15) predominantly report positive outcomes, mostly stemming from increased car occupancy (Ding et al 2019, Realini et al 2021, Sun and Ertz 2021a.…”