As the development of smart cities, park security systems, highway toll stations, government and corporate access control systems, and anti-terrorism checkpoints continues to accelerate, the control box enclosures for retractable road barriers, tire-puncturing vehicle barriers, and hydraulic anti-collision bollards—as the core protective housings for electronic control systems—are constantly exposed to complex roadside conditions such as sunlight, rain, de-icing salt corrosion, deliberate vandalism, and vehicle collisions. The strength, corrosion resistance, dustproofing, waterproofing, and tamper-proofing of these enclosures directly determine the long-term operational stability of the entire road barrier system. Recently, a domestic manufacturer specializing in transportation sheet metal structures completed the R&D of a new generation of control box enclosures specifically designed for road barriers. Building on four core upgrades—high-strength structure, multi-layer corrosion protection, comprehensive protection, and modular integration—the product has officially entered mass production, providing highly reliable enclosure solutions for urban entry/exit points, traffic checkpoints, and airport complexes.

Traditional traffic barrier enclosures in the industry currently suffer from four major shortcomings: standard cold-rolled steel enclosures have poor salt spray resistance, leading to widespread rusting and leaks within 3–5 years when exposed to de-icing agents in northern winters or high-humidity coastal environments; simple single-door locks offer weak protection against tampering and can easily be pried open, causing controller short circuits and system failures; there is no independent heat dissipation and airflow structure inside, causing the mainboard to crash due to high internal temperatures from intense summer sunlight; the enclosure structure is flimsy, making it highly susceptible to deformation and cracking from roadside vehicle scrapes or impacts from heavy objects, which significantly increases maintenance and replacement costs. To address these pain points specific to outdoor roadside use, the R&D team completed a full-process structural optimization design in accordance with the GA/T 1343 standard for the security industry.
In terms of structural strength and security against vandalism, the new product features a one-piece, bend-formed structure made of thickened Q355 high-strength steel. The cabinet door frame and base are reinforced with double-layer stiffeners, significantly enhancing impact and crush resistance; The cabinet door features concealed hinges and a three-point anti-theft lock system, eliminating any exposed gaps that could be pried open, thereby meeting the requirements for protection against violent destruction in public areas and making it suitable for high-security scenarios such as police checkpoints, government compounds, and airports. The cabinet is constructed using seamless robotic laser welding and features double-layer ternary sealing gaskets, ensuring a consistent IP65 protection rating for the entire unit. It withstands torrential rain, sand and dust, and road splash, preventing condensation and water ingress that could damage the PLC, hydraulic drive modules, and power supply components.

The weather-resistant and anti-corrosion process has undergone a major upgrade. The entire enclosure is treated with a three-layer anti-corrosion system consisting of sandblasting for rust removal, a zinc-rich epoxy primer, and an outdoor weather-resistant, flame-retardant fluorocarbon topcoat. The total coating thickness is ≥90 μm, and the neutral salt spray test exceeds 1,000 hours. Special anti-corrosion models have been introduced to address winter de-icing salt in northern regions, coastal salt fog, and acidic and alkaline fumes in chemical industrial parks. With a designed outdoor service life of over 15 years, these models significantly reduce the frequency of road facility refurbishment and replacement. Sunshade and heat-dissipation channels have been added to the exterior of the enclosure, along with built-in removable dust-proof ventilation filters. Passive heat dissipation reduces internal temperature rise, resolving the issue of equipment shutdowns caused by high temperatures from direct sunlight in summer; In low-temperature regions, an optional built-in heating bracket is available to ensure stable operation in extremely cold areas down to -40°C.
The internal modular layout accommodates all types of road barrier equipment: standardized rail mounting positions ensure compatibility with hydraulic rising bollards, flip-board road barriers, portable remote-controlled tire-puncturing devices, and barrier gate interlock controllers; dedicated cable trays, grounding bars, and battery compartment zones are provided, with physical isolation between high- and low-voltage circuits, ensuring neat wiring for easy future maintenance and repairs. The product supports multiple installation configurations, including floor-standing, pole-mounted, and pre-buried enclosures. Standard-sized units are available from stock for rapid delivery, while non-standard lengths and widths, compartment partitions, and warning signs can be customized as needed. Each unit ships with a rain visor, anti-theft lock, and grounding kit for a complete, one-stop solution.

These roadblock enclosures are used in six major application scenarios: checkpoints on major urban thoroughfares, highway toll stations, school and hospital campuses, entrances and exits of enterprises and public institutions, ports and airports, and portable roadblocks at temporary police checkpoints. They have been deployed in over 100 security projects nationwide in collaboration with several domestic roadblock equipment manufacturers. Industry experts note that enclosures for access control security equipment serve as the first physical barrier in road safety management. The mass production of these standardized, high-protection roadblock enclosures addresses a long-standing gap in outdoor security infrastructure, enhances the overall reliability of roadblock equipment, and supports the standardized development of traffic infrastructure for “Safe City” initiatives.
In the future, the company will continue to expand its product lines to include corrosion-resistant 316 stainless steel and lightweight aluminum alloy portable roadblock enclosures, establish flexible custom production lines to shorten delivery cycles for non-standard orders, and continuously refine its full-category portfolio of traffic security enclosures.