>With the motorcycles’ front wheel next to the car’s rear wheel, one of the motorcycles can be heard inside the car and three motorcycles can almost be heard bu

>With the motorcycles’ front wheel next to the car’s rear wheel, one of the motorcycles can be heard inside the car and three motorcycles can almost be heard but, “unfortunately it is too late to be safe.” These sound like very quiet cars[0] or not very loud motorcycles. Maybe my anecdata is flawed but I'm pretty sure I can make out motorcycles (and loud cars) on throttle driving an entirely different road, 100's of ft away when I'm driving, nevermind a straight piped harley 2 car lengths behind. [0] I don't drive a new enough vehicle to attest to modern NVH isolation, but if the driver of a car truely can't hear a ~105 db exhaust noise (~comparable volume to say a horn, or the scream of someone being run over) the problem might lie with the car. edit: for comparison, a car horn is apparently ~110-115db vs an allegedly 105db motorcycle that was tested. (5-10db is a lot more than it looks, but that should be the ~equivalent of hearing a horn honk from ~100ft away @-6dB/100ft)