To amend section 11122 of title 49, United States Code, relating to freight cars.

Amends Federal law to provide that regulations adopted by the Interstate Commerce Commission for freight cars owned or leased by small railroads shall apply to freight cars owned or leased by class III rail carriers and by any class II rail carrier which demonstrates to the Commission special circumstances (when the ratio of loaded freight cars to those unloaded on its line during the preceding year exceeds two to one) justifying such application.