Take Your Folding Bike On Amtrak As A Carry On
Did you know that folding bikes can be brought aboard Amtrak trains as carry on luggage?
Following is a quote from the Amtrak website on this subject.
Folding bicycles may be brought aboard certain passenger cars as carry-on baggage. Only true folding bicycles (bicycles specifically designed to fold up into a compact assembly) are acceptable. Generally, these bikes have frame latches allowing the frame to be collapsed, and small wheels. Regular bikes of any size, with or without wheels, are not considered folding bikes, and may not be stored as folding bikes aboard trains.
You must fold up your folding bicycle before boarding the train. You may store the bike only in luggage storage areas at the end of the car (or, in Superliners, on the lower level). You may not store bikes in overhead racks.
Complete info regarding bringing bikes aboard Amtrak trains
Other rail based mass transit systems in the USA also encourage riders to bring folding bikes aboard. Following are the folding bike policies for several rail transit systems as well as links to the complete policies for bringing bikes on their trains:
BART | Caltrain