Abstract: A traveling undercarriage for a mobile container or the like, comprising a substantially rectangular-shaped frame having two parallel main supports extending transversely with respect to the direction of displacement of the undercarriage and connected at their ends with one another. Rollers are attached at transverse supports connected with the main supports. The transverse supports carrying the rollers or rolls are detachably secured by connection elements with the main supports. Attachment elements are provided which are suspendible at the main supports and at which there are secured transverse walls of the container.