It depends on different rail services. Whichever train services allow bicycles on the train, will have their own rules about Bike Permit. It is best to check the official webpage of the rail service or your state’s Department of Transportation for the exact rules on permits required to carry a bike on the train. Most railroad services like Long Island Rail Road (LIRR), Metropolitan Transit Authority, Shore Line East, NJ Transit, and Amtrak have onboard bicycle policies where passengers are allowed to ride the rails along with their bikes. New train cars are being built with bicycle hooks to assist bicycle commuters. New York, New Jersey, Vermont, North Carolina, Pennsylvania, Connecticut, along with many, other states offer bike access on state-supported trains. While some states offer this service for free, others charge for the permit to carry bicycles on the train.