They are characteristically longer and have lower deck height then standard chassis, ideal for transporting constantly shifting payloads.
Firstly, containers are commonly stored on chassis as a single mounted unit at rail yards and depots–such terminals are known as "wheeled" facilities.
Secondly, steamship lines offer a service called ″carrier haulage″ or ″store door delivery″, whereby they arrange the drayage of a customer’s container.
The steamship line hires a local trucking company and pays the pool for the chassis usage.
[7]: 26 [8][9] This means that at wheeled facilities, containers are mounted onto chassis selected by the steamship line before the trucker arrives to pickup.
Long dwell times mean less free chassis on-site at ports and rail ramps.