Also searched as: Dock Lock · Trailer Restraint · Vehicle Hook — OSHA-Compliant Automatic Trailer Restraint System for Loading Dock Safety
The RAX Automatic Vehicle Restraint is a dock-mounted safety system that locks the trailer to the dock during loading and unloading, preventing trailer creep, early departure and gap separation — the three most dangerous loading-dock accidents. The market-leading taxonomy, set by Rite-Hite (US), categorizes restraints into rotating-hook (engaging the trailer’s ICC/RUPG bar), vertical-barrier (ground- or wall-mounted barriers) and wheel-based systems [SOURCED] ritehite.com.
In the US, OSHA 29 CFR 1910.178(k)(1) and (m)(7) permits mechanical vehicle restraints that give protection equivalent to wheel chocks [SOURCED] osha.gov. Automatic restraints are the upgrade path from manual chocks: the hook or barrier engages automatically when the trailer reverses to the dock, and an interlock with the dock door and traffic light prevents the door from opening until the restraint is confirmed locked. RAX manufactures automatic vehicle restraints to your dock configuration — rotating-hook, vertical-barrier or wheel-based types — from prototype to full production runs, with technical drawing mounting drawings and interlock wiring diagrams.
Rotating-hook or vertical-barrier types engage automatically as the trailer reverses to the dock; no manual intervention needed, reducing human-error risk.
Meets the OSHA 29 CFR 1910.178(k) requirement for mechanical means equivalent to wheel chocks [SOURCED: osha.gov]; automatic restraints are the recognized upgrade path.
Interlock with dock door operator and traffic light system: door cannot open until restraint is confirmed locked; green/amber/red communication to driver and forklift operator.
Engineered to resist the forces of a loaded trailer pulling away; holding-force rating confirmed per restraint type at quotation.
Wall-mounted, ground-stored or under-leveler mounting options to fit existing dock layouts. RAX issues technical drawing mounting confirmation before production.
English installation manual + technical drawing mounting drawings + interlock wiring diagrams; FOB Tianjin or Qingdao, FCL & LCL.
Every unit is engineered to your dock. Figures marked [SOURCED] (with the source) or [ESTIMATE] (industry-typical, not independently verified for RAX) are market-reference values in the Basis column; your RAX unit’s final figures are confirmed on the technical layout and quotation.
| Parameter | Specification | Basis |
|---|---|---|
| Product | Automatic Vehicle Restraint — dock-mounted trailer locking system | RAX product definition |
| Restraint types | Rotating-hook (engages ICC/RUPG bar), vertical-barrier (ground/wall-mounted), wheel-based — per Rite-Hite market taxonomy [SOURCED] | ritehite.com |
| Operation mode | Automatic (hook/barrier engages on trailer contact) or manual (operator-activated); automatic is the standard for high-throughput docks | RAX capability; type taxonomy [SOURCED] ritehite.com |
| Holding force | Confirmed per restraint type and trailer mix at quotation; rotating-hook types are the market default for standard trailers | RAX confirms per project |
| Interlock | Door/restraint/traffic-light interlock: door cannot open until restraint confirmed locked; green/amber/red signals to driver and forklift operator | RAX capability; interlock requirement per project |
| Mounting | Wall-mounted, ground-stored (automatic or manual), or under-leveler; RAX issues technical drawing mounting drawings | RAX engineering |
| Structure material | Galvanized steel / painted carbon steel; corrosion protection per environment | RAX capability |
| Color / finish | Full RAL custom (common safety yellow RAL1003, RAL9006, RAL7016) | RAX capability |
| Power supply | 220 V / 380 V, 50/60 Hz for motorized hook types; manual types require no power | RAX capability |
| Certification (held) | Factory QMS: ISO 9001:2015; SGS material reports; Product Liability Insurance | RAX brand brief |
| Regulatory alignment | OSHA 29 CFR 1910.178(k)(1) permits mechanical restraints equivalent to wheel chocks [SOURCED]; compliance documentation confirmed per project | osha.gov |
| Order | Custom engineered to your exact opening, specification and RAL color | RAX brand brief |
| Lead time | Sample 7–15 days; standard container 12–20 days; custom first order 20–35 days | RAX brand brief |
| Warranty | Structure 2 years; motor/operator 3 years; free spare parts within warranty (DHL/FedEx 5–7 days) | RAX brand brief |
Sizing note: Vehicle restraints are a safety system, not just hardware. Tell us your trailer types (ICC bar height, trailer weight), dock layout and whether you need interlock with existing dock doors — we specify the right restraint type and issue the interlock wiring diagram before production.
Trailer types, ICC/RUPG bar heights and gross weights. This determines hook vs barrier vs wheel-based type.
Wall-mount, ground-stored or under-leveler? Send dock photos or drawings for mounting technical drawing confirmation.
Do you need door/restraint/traffic-light interlock? Existing door operator model and traffic-light system details.
Cycles/day, temperature range, corrosion exposure. Outdoor docks may need stainless or heavy-galvanized components.
RAX supports full private-label production of the Automatic Vehicle Restraint: custom mounting configurations, RAL colors, branded control boxes, packaging printing and installation-manual translation (EN/ES/FR/AR/RU). Start with an OEM sample and scale to container-load branded production. Custom Tooling records are archived for up to 5 years — no extra tooling fee on repeat orders, all under strict NDA.
US regulation permitting mechanical vehicle restraints as equivalent to wheel chocks for trailer securement at loading docks [SOURCED]. The basis for specifying automatic restraints in US-market facilities.
RAX’s held CE certification for the industrial door and operator safety scope — relevant when you source the restraint together with the dock door as an integrated safety package.
Certified quality management across the whole factory, with SGS material reports and Product Liability Insurance.
US standard for powered industrial trucks; references trailer securement during loading/unloading; designation to be confirmed per project [ESTIMATE].
The three main types are rotating-hook (engages the trailer’s ICC/RUPG bar), vertical-barrier (rises from ground or wall to block trailer movement), and wheel-based (clamps the trailer wheel) [SOURCED: ritehite.com]. Rotating-hook is the market default for standard trailers; tell us your trailer mix and we recommend the right type.
Yes. RAX restraints can interlock with your dock door operator and traffic-light system so the door cannot open until the restraint is confirmed locked. Send your door operator model and we confirm interlock compatibility.
OSHA 29 CFR 1910.178(k)(1) permits mechanical restraints that give protection equivalent to wheel chocks [SOURCED: osha.gov]. Automatic vehicle restraints are the recognized upgrade path. Tell us your destination market and we confirm the applicable regulatory documentation.
Holding force depends on the restraint type and your trailer fleet’s gross weight. We specify and confirm the holding-force rating per project at quotation, based on your heaviest loaded trailer.
We are a pure manufacturer and do not provide on-site installation. Every order ships with an English installation manual, technical drawing mounting drawings and interlock wiring diagrams for your local team or EPC contractor.
Sample 7–15 days; standard container 12–20 days; custom first order 20–35 days. Structure 2-year warranty, motor/operator 3 years, with free spare parts dispatched by DHL/FedEx within warranty.
Or email info@raxdoor.com
Send your trailer types, dock layout and interlock requirements — we reply with a restraint type recommendation, technical drawing mounting drawings and lead time.
