An articulated truck assembly where the ends of two adjacent cars rest on a single bogie rather than each car having its own pair of trucks. This design reduces the overall weight and number of axles in a trainset while preventing the cars from telescoping during a derailment. It is commonly found on intermodal well cars and specialized passenger trainsets.
Heard on the job
We've a bad wheel bearing on the Jacobs bogie between the third and fourth platforms of that well car.
Related terms
Bogie
A wheeled chassis or framework attached under a rail vehicle to provide support, suspension, and guidance along the track.
Truck
The swiveling wheel and axle assembly located under each end of a railroad car or locomotive.
Rolling stock
The collective term for all wheeled vehicles that operate on a railway.