Buses do come in threes, at least according to Transit vehicles’ headway distribution and service irregularity[1] as cited in [2] 1: https://link.springer.com/

Buses do come in threes, at least according to Transit vehicles’ headway distribution and service irregularity[1] as cited in [2] 1: https://link.springer.com/article/10.1007/s12469-010-0024-7 https://link.springer.com/article/10.1007/s12469-010-0024-7 2: https://theconversation.com/transport-experts-explain-why-buses-come-in-threes-and-which-one-you-should-get-on-99348 https://theconversation.com/transport-experts-explain-why-bu...