>>1014975I've seen people on beach cruisers with a speaker mounted on their bars but I wouldn't be able to hear that over the wind buffeting my ears when I ride. 'Plus I think that's obnoxious behaviour.
If you're worried about being able to hear traffic then ask yourself if you can tell when a car is about to plough into you buy sound alone, and what counter measures you would take if you could.
Seeing what's going on around you is infinitely more important than hearing what's going around you, and (imo) you should never make a lane change using only your hearing as a guide, in any level of traffic. Always turn your head to see what's coming.
Of course, this is just my advice and I'm not telling you how to live your life. But you may live a bit longer.