In New York, anyone under the age of 14 is required to wear a bicycle helmet when bicycling. This law means that some older teens and some adults choose not to wear a helmet.
Wearing a helmet can be one of the best things you do to prevent a serious head injury. In the event of a bicycle crash, your helmet can protect you from a permanent or even fatal injury, but there are many reasons why people decide not to wear a helmet. They may not have a helmet on hand, especially if they are riding a rented bike. They may not like the feel of a helmet.
Many riders worry that the absence of a helmet automatically destroys their case if they are injured. Insurance adjusters sometimes reinforce that fear, suggesting that a cyclist who did not wear a helmet is to blame for their own injuries.
New York Personal Injury Lawyer Blog


