Please don't ride with headphones in both ears. You cannot hear other cylists, for one, who may be passing you. In urban environments, this is particulalry problematic. Why? Because their is (1) already very limited space (crosswalks, jawalkers, doors opening, busses, etc); and (2) there is a huge range in speeds of cyclists (lycra-guys, delivery-men, hipsters, commuters). One ear is plenty (look at pro-cyclists).
In CA it is also ILLEGAL, apparently.
The Law: Riding with Tunes
Only five states regulate the use of headphones by cyclists, and generally the limitations are directed at all vehicle operators. Two of those states–Florida and Rhode Island–prohibit any use of headsets. The intent is to ensure that vehicle operators won’t inhibit their ability to hear sirens and vehicle horns.
The other three states that regulate the use of headsets–California, Delaware and Maryland–prohibit their use in both ears; in these states, one ear must be left uncovered. Maryland makes an exception to this law for riders on bike paths.
In CA it is also ILLEGAL, apparently.
The Law: Riding with Tunes
Only five states regulate the use of headphones by cyclists, and generally the limitations are directed at all vehicle operators. Two of those states–Florida and Rhode Island–prohibit any use of headsets. The intent is to ensure that vehicle operators won’t inhibit their ability to hear sirens and vehicle horns.
The other three states that regulate the use of headsets–California, Delaware and Maryland–prohibit their use in both ears; in these states, one ear must be left uncovered. Maryland makes an exception to this law for riders on bike paths.
http://www.bicyclelaw.com/road-rights/a.cfm/road-rights-list...