On Trenitalia's high-speed Frecciarossa and Frecciargento trains, there is generally no strictly enforced "weight limit" for luggage, but you are limited by what you can physically carry and store. As of 2026, the high-fidelity rule is that each passenger can bring two large suitcases and one piece of hand luggage for free. Luggage must be stored in the racks at the end of the cars, in overhead bins, or under the seats. On regional trains, the space is more limited, and you must ensure your bags do not block aisles or doors. If you are traveling with "High-Fidelity" oversized items like bicycles or surfboards, you must purchase a specific "Bicycle Supplement" (usually around €3.50) and ensure the bike is disassembled or folded if required by that specific train type. While Trenitalia is more relaxed than an airline, they reserve the right to refuse excessively bulky items that compromise passenger safety or comfort within the cabin.