I used to ride all the time with headphones and never had too much trouble, just a few too many close calls that don't happen now that I can hear when a car is about 10 metres behind me and approaching, can normally get a good judge of the approaching speed from doppler magic too.
Touche!
I used to ride all the time with headphones and never had too much trouble, just a few too many close calls that don't happen now that I can hear when a car is about 10 metres behind me and approaching, can normally get a good judge of the approaching speed from doppler magic too.