Real bus horn recording: Joseph SARDIN / BigSoundBank
Source: https://bigsoundbank.com/klaxons-de-bus-s3593.html
License: CC0 1.0 Universal — https://creativecommons.org/publicdomain/zero/1.0/
License confirmation: https://bigsoundbank.com/licenses.html
Adapted by trimming to the first two honks, fading ends, reducing level and converting to mono PCM.
Original recording is a bus near Paris; it is not a recording of Connect Transit buses.