US Patent 9908453 Intermodal chassis

An intermodal chassis for highway transportation of 53 foot shipping containers having a rear axle positioned under the chassis frame so that the kingpin-to-rear-axle length is no more than 40 feet, and a forward axle positioned under the frame between the gooseneck and the rear axle so that a forward-to-rear-axle length is at least 12 feet. The chassis includes air bag suspension that automatically deflate the air bags when the brakes are locked, preventing damage when loading a container onto the chassis. Other features include self-scaling and load-leveling, and other weight savings include use of smaller sized aluminum wheels.