You'll need to get a lifetime LIRR Bicycle Permit, which costs just $5. You can purchase a permit onboard LIRR trains, by mail or at LIRR ticket booths.
To buy a permit by mail, first you'll need to download a form at www.mta.info/lirr/about/Bicycles/BicyclePermit.htm .
Fill it in and then either bring it to any LIRR station or mail in your $5 payment along with the application to:
LIRR Bicycle Permits
Jamaica Station Mail Code 1973
Jamaica, NY 11435
When you receive your permit, take it on the train, but if you're traveling with bike-riding friends or family, please note that a maximum of four bicycles per train is allowed. However, on weekends, up to eight bicycles per train is allowed. You'll also find some specially designated bicycle trains that will allow more than eight bikes on weekends. Please see LIRR timetables to find out which trains have these.
>If you lose your permit, or it becomes damaged or worn out, you'll need to replace it and the fee is $5. You'll need to fill out a form again, and if you're asking for a replacement for your damaged permit, please include it with your application form.
lease read the rules and restrictions that are written on your bicycle permit.
More info: www.mta.info/bike.
See also Nassau County Bicycling Paths.