The ribbon bridge system is a modular and foldable aluminum floating bridge system. Its function is to build bridges over water when the troops are heavily mobilized, or to combine them into ferries with multiple compartments. Recently, the Swedish Defense Materials Management Agency signed a contract with a bridge systems company to purchase an improved ribbon bridge system (IRB), which partially reflects the current level of development of ribbon bridge systems in various countries. What are the standards for measuring the performance of a ribbon bridge system? Simply put, it means whether it is possible to deploy quickly, have strong environmental adaptability, have a large payload capacity, facilitate fast passage, and have strong interoperability while being sturdy and durable. The IRB (hereinafter referred to as IRB) purchased by the Swedish Defense Materials Management Agency consists of standardized boat sections, each with a length of 6.92 meters and a total weight of 6350 kilograms. Unlike the Russian PP-2005 bridge, which relies on the Kamaz-63501 truck chassis for transportation, IRBs can be transported by truck, rail, or helicopter, resulting in faster deployment speed and larger range. After further improvement in the folding and unfolding mechanism, the 13 river boat sections and 2 shore boat sections of the system can be erected within 30 minutes and laid into a 100 meter long floating bridge. Due to the use of advanced design and materials, the system requires a short time for water flooding and has low requirements for water depth, and can even be deployed in waters as shallow as 0.7 meters. For Sweden, where rivers, lakes, and wetlands are dense, IRB is particularly suitable as it can be quickly deployed, withdrawn, and redeployed. IRB can operate stably at a water flow rate of 3.05 meters per second and can also be used under extreme temperature conditions of -40 ℃ or 50 ℃. In terms of load capacity, IRB can withstand main battle tanks such as Leopard 2A7, M1A2, Challenger 2, etc. Compared with French PFM bridge and German FSB2000 bridge, its load limit is higher and it can serve more objects. The bridge deck width of IRB can be adjusted to 4.5 meters for single lane or 6.75 meters for double lane according to task requirements to adapt to different scenarios. In addition, the design of the anti slip surface enhances the safety of vehicle driving, and the improved splash guard can effectively prevent the bridge deck from being flooded, ensuring the normal use of the bridge under complex hydrological conditions. Enhancing interoperability is a requirement for newly developed equipment in the modernization process of Swedish defense. IRB has also been strengthened in this regard. It strictly follows NATO standard design and is compatible with traditional bridge systems such as standard ribbon pontoon SRB and floating support bridge FSB in countries such as the United States, Germany, and the Netherlands. It can also seamlessly integrate with Sweden's M3 amphibious pontoon system to support multinational joint operations. Like other ribbon bridge systems, IRB also has its shortcomings. IRB is difficult to function stably under extreme water flow velocity or complex terrain conditions. The deployment of IRB relies on dedicated support ships and precise torsion bar control. Improper operation of the torsion bar during the water flooding deployment process may cause the process to be obstructed. The original intention of its design was to reduce weight by using aluminum alloy, but this material and folding design contradict the reality of high fatigue resistance requirements, and the maintenance cost is high. For various countries' bridge systems, similar problems also exist. Only by combining intelligent technology and new material innovation, and continuing to make great efforts to solve these problems, can the strip bridge system continuously improve its automation level, enhance its adaptability to multiple scenarios, and pave the "water road" in a shorter time, playing a greater role. (New Society)