Establishments primarily engaged in building and rebuilding locomotives (including frames and parts, not elsewhere classified) of any type or gauge; and railroad, street, and rapid transit cars and car equipment for operation on rails for freight and passenger service. Establishments primarily engaged in manufacturing mining cars are classified in Industry 3532. Repair shops, owned and operated by railroads or local transit companies, repairing locomotives or cars for their oWn use are classified in Transportation, Major Groups 40 and 41. Establishments primarily engaged in repairing railroad cars on a contract or fee basis are classified in Transportation, Industry 4789; and those repairing locomotive engines on a contract or fee basis are classified in Services, Industry 7699.

• Brakes, railway: air and vacuum
• Cars and car equipment, freight or passenger
• Dining cars and car equipment
• Engines, steam (locomotives)
• Freight cars and car equipment
• Industrial locomotives and parts
• Interurban cars and car equipment
• Locomotives, locomotive frames, and parts
• Lubrication systems, locomotive
• Mining locomotives and parts
• Railroad car rebuilding
• Railway motor cars
• Rapid transit cars and equipment
• Sleeping cars, railroad
• Streetcars and car equipment
• Switching locomotives and parts, electric and nonelectric
• Tank freight cars and car equipment
• Tenders, locomotive
• Trolley buses, trackless