First let me say that I believe a proper motorcycle should make a proper noise. However, the situation you describe is the exception rather than the rule and is perhaps a lucky outcome of a series of less than thoughtful, proactive behaviors. Particularly the cyclist’s contentment to place himself in jeopardy by maintaining his position in the ‘blind spot’ and what appears to be a less than safe approach to lane changing (I’m not criticizing – I’ve done it, too. And if you ask my wife, I do it all too often). Typically, and subject to conditions, the noise generated by a moving object is not heard to any discernable degree until the object is in very near proximity and or has just passed. Using that bit of science would dictate that using loudness as a safety factor would provide results far too late in most circumstances. My recommendation would be to select your level of noise on personal taste with some amount of respect for the general public, regard that noise as being for your personal satisfaction only and NEVER as a safety cushion, stay away from the ‘blind spot’ as best you can, when you find yourself in one – get out as quickly and safely as possible, when changing lanes –on any form of vehicle- use every observation tool available – eyes, mirrors, ears (yes, even ears for that occasional time when it may be a factor), and your head – beyond holding your thinking cap, it’s also a movable appendage and will enable views well beyond mirrors.
