Retractable fixed ramps (commonly referred to as retractable loading docks, retractable ramps, or hydraulic ramps) are essential equipment in logistics and warehousing loading and unloading operations. Since “telescopic” and “fixed” represent two distinct installation configurations in industrial terminology (fixed installations are mounted on loading docks, while telescopic refers to platforms with a tongue that extends outward), in actual product nomenclature, “telescopic fixed leveling plate” typically refers to a hydraulic loading dock equipped with a telescopic tongue and mounted on a fixed loading dock.

Truck restraints are safety locking devices mounted along the leading edge of loading docks and used in conjunction with dock levelers. Their core function is to physically secure the rear end of a truck (typically its rear impact guard/RIG or wheels) to the dock throughout the entire loading and unloading process, preventing unintended vehicle departure (trailer creep / trailer separation).