stock car
A railway car for carrying livestock.
Stock car: railway cattle truck with ventilation and gates
A stock car is a specialized railway wagon designed to transport live animals, typically cattle, sheep, pigs, and horses, over distances of hundreds of miles. Unlike covered freight cars, stock cars have slatted or barred sides that allow air circulation essential to prevent overheating and suffocation during long journeys. The floor is typically wooden with drainage gaps, and internal divisions can be adjusted or removed depending on the type and number of animals being carried.
Stock cars come in several configurations. Double-deck models, common in North America, stack smaller animals like sheep and pigs in two tiers to maximize capacity while maintaining headroom. Single-deck cars are preferred for cattle and horses. Most stock cars are 40 to 50 feet long and carry 15 to 40 head of cattle depending on size and weight. Loading ramps at one or both ends, combined with internal gates, allow handlers to sort and separate animals efficiently at sidings and feedlots.
The slatted design creates a trade-off: while it provides essential ventilation, it also allows animals to push limbs through the gaps, causing bruising and injury. Modern stock cars incorporate rounded corner posts and closer spacing to minimize this damage. Straw or shavings bedding absorbs waste and provides cushioning, though layers must be replenished at major stops on long hauls.
Decline and regulation
Stock car transport was a foundational part of the North American rail industry through the mid-twentieth century, connecting western ranches to eastern slaughterhouses and urban markets. The rise of motor transport and specialized livestock trailers, combined with stricter animal welfare regulations governing transport duration and rest periods, has sharply reduced their use. Many surviving stock cars are now preserved as heritage equipment or converted for specialty freight.
The term "stock car" also appears in motorsport, referring to a race car built from a standard production automobile, but this usage is wholly unrelated to the railway definition and reflects the American colloquial habit of calling any vehicle a "car".