3 ms·Does a horse and buggy go fast enough to notice the Doppler effect?by robbrown451 12y agoDoes a horse and buggy go fast enough to notice the Doppler effect?kghose 12y agoNo. They meant the fading of the sound and mixed it up.krdln 12y agoIf a buggy is going 5m/s (18km/h) then pitch difference between approaching and receding buggy is about a half of a semitone. So I'm pretty sure you can hear it.