Abstract: The present invention relates generally to the field of semi-trailers. More specifically, the present invention relates to a cable support safety system for semi-trailers, primarily comprised of at least one spring pole, at least one main cable, and at least one spring pole retention cable. The main cable can be secured along the length of the trailer roof, wherein the spring pole retention cable can then be secured to the cable and to the spring pole after the spring pole is secured within a semi-trailer. In this manner, the spring pole can only move the length of the retention cable if the spring pole is dislodged or moved.

Abstract: A safety attachment which is used to stabilize a straight ladder or an extension ladder, comprising: a main body, which contains an upper portion and a lower portion, the upper portion and the lower portion are connected to each other; the upper portion can be attached to the ladder, and the lower portion can stably contact ground surface; a plate, which is fixed on the main body, and a first loop is fixed on the plate; and at least one rope, which has one connector located on both ends of the rope respectively, and one of the connectors is used to detachably attach to the first loop to let the rope connect to the main body, another one of connectors is used to detachably attach to a second horizontal bar on the ladder to let the rope connect to the ladder.