Anti-Rust Crash Cushion Attenuator - Truck Mounted Attenuator
Enhanced Safety Performance with Durable Anti-Rust Construction
Designed by HANAI CO.,LED in Japan, this truck-mounted attenuator serves as a critical safety device for freight vehicles, widely recognized in the industry as the "lifeline" for truck rear-end protection. The system addresses the critical height differential between standard passenger vehicles (70-80 cm front height) and large trucks (100+ cm rear height), which aligns precisely with the head and chest level of drivers in following vehicles.
While the attenuator provides impact buffering during rear-end collisions, its primary function is preventing passenger vehicles from sliding underneath the truck's rear section. The installation height is specifically calibrated to vehicle models, positioning it at the exact level of the following driver's head and chest area. This strategic placement creates a crucial safety barrier that can significantly reduce injury severity during collision events.
Critical Safety Impact Without Attenuator Protection
Without proper underride protection, rear-ending vehicles can slide completely beneath the truck ahead when braking is insufficient. In severe cases, this can result in complete front-end vehicle shearing, with driver survival rates approaching zero.
Life-Saving Protection With Attenuator Installation
When equipped with the anti-collision beam, the extended barrier prevents passenger vehicles from sliding underneath the truck, substantially increasing driver survival probability during rear-end collisions.
Reference images from network sources for illustrative purposes only
Product Specifications
| Item |
Specification / Parameter |
| Model |
RMHs Series Telescopic RUPS |
| Standard Dimensions |
W 1800mm × L 850mm × H 350mm |
| Customization Support |
Dimensions and color can be customized |
| Main Material |
Channel Steel, Stainless Steel |
| Energy-Absorbing Structure |
Aluminum Alloy + Honeycomb Crash Material (Patent No.: ZL 2006 1 0057817.8) |
| Surface Finish |
Electrostatic Spray Painting (rust-proof, weather-resistant) |
| Weight |
Approx. 98.3 kg (may vary slightly by vehicle model) |
| Suitable Vehicle Weight |
2.0 ~ 4.0 tons |
| Mounting Method |
Suspension-type, mounted on the rear chassis of the vehicle |
| Structure Type |
Telescopic design with rollers; options with or without step |
| Primary Functions |
Underrun prevention, energy absorption, reflective warning |
| Standard Color |
Red/White (customizable) |
| Applicable Vehicles |
Pickups, Box Vans, Semi-trailers, Trailers, Large Freight Vehicles, etc. |
| Safety Certification |
Certified via overseas crash testing (verified by Japanese vehicle laboratory testing) |
| Environmental Feature |
Energy-absorbing material is recyclable and eco-friendly |
Comparative Advantage Analysis
RMHs Telescopic Crash Barrier vs. Traditional Rear Protection Devices
| Dimension of Comparison |
RMHs Telescopic Crash Barrier |
Traditional Rear Protection Device |
Advantage Analysis / Notes |
| Core Protection Concept |
Active Protection + Energy Absorption: Uses patented honeycomb aluminum structure to absorb energy, avoiding direct rigid impact |
Passive Rigid Protection: Primarily relies on material hardness and structural strength for rigid resistance |
Significantly reduces peak collision impact force, offering better protection for both vehicles |
| Structure & Space Usage |
Telescopic Design: Can be retracted when not in use (e.g., during driving), not increasing vehicle length; quickly extended when needed (e.g., parking) |
Fixed Installation: Permanently protrudes from the rear, increasing overall vehicle length and aerodynamic drag |
Higher space efficiency, balancing daily driving and stationary protection needs. More flexible |
| Protection Effectiveness |
Targeted Underrun Protection: Standard height (350mm) is specifically designed to address the height difference between car fronts and truck undercarriages |
Height Mismatch Issue: Common protection bars often have higher ground clearance, failing to effectively prevent smaller vehicles from underrunning |
A key design feature to prevent "underride accidents," known as the "lifeline for the rear of trucks" |
| Energy-Absorption Technology |
Patented Cushioning Material: Built-in honeycomb aluminum alloy crash boxes (Patent No.: ZL 2006 1 0057817.8) |
Lack of Energy Absorption Design: Typically uses solid steel beams, directly transferring impact force to the vehicle frame |
Absorbs impact through material crushing and structural deformation, effectively shortening the braking distance of the following vehicle |
| Additional Features |
Integrated High-Intensity Reflective Film: Actively enhances warning visibility at night and in low-visibility conditions |
Reliance on Adhesive Reflective Markings: Often uses add-on reflective tapes, which can easily detach and have limited effectiveness |
Active safety warning helps further prevent rear-end collisions |
| Weight & Installation |
Lightweight Composite Design: Main frame uses channel steel and stainless steel; weight approx. 98.3kg. Requires professional installation |
Simple Structure, Generally Heavier: Often made from heavy steel as a single welded piece, resulting in greater weight |
Controls weight while ensuring strength, but requires some professional expertise for installation |
| Intelligence & Responsiveness |
Mechanical Activation: Currently uses a physical structure and is not automatically responsive |
No intelligent responsiveness |
Patent information suggests a future trend toward integrating monitoring and control systems for pre-collision extension to increase buffer distance |
| Customization Service |
Comprehensive Customization: Supports customization of size, color, and corporate logos as needed |
Standardized Product: Limited options, difficult to match special vehicle models or corporate branding needs |
Particularly suitable for fleet uniformity and corporate branding |
FAQ
Q1: What is this product?
A: This is a Telescopic Rear Underrun Protection System (RUPS) designed for large vehicles such as pickups, vans, semi-trailers, and trailers. Its primary functions are to prevent a colliding car from underrunning the truck's rear in a rear-end collision, absorb impact energy, and enhance road safety.
Q2: Which vehicles is it suitable for?
A: It is suitable for vehicles with a weight of 2.0 to 4.0 tons, including:
Q3: What are the main materials? Is it durable?
A: The main structure is made of channel steel and stainless steel, providing sturdiness and corrosion resistance. The energy-absorbing section utilizes aluminum alloy and patented crushable material. The surface is finished with electrostatic spray painting for rust prevention and a clean appearance.
Q4: How is it installed? Are professional tools required?
A: It employs a suspension-type mounting system, fixed to the rear chassis of the vehicle. Installation by a qualified professional is recommended to ensure proper fitment and safety performance.
Q5: How does it improve safety?
A: It provides three core safety functions:
-
Underrun Prevention: Its height is specifically designed to match the front profile of passenger cars, blocking them from sliding underneath the truck.
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Energy Absorption: Features an internal patented honeycomb crash structure (Patent No.: ZL 2006 1 0057817.8) to absorb and dissipate collision forces.
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Enhanced Warning: Red/white color scheme with high-intensity reflective sheeting significantly improves visibility at night and in low-light conditions.
Q6: What does "telescopic" mean? How is it used?
A: The protection bar can be retracted or extended. When not in use, it retracts to save space. It can be quickly pulled out and deployed when needed (e.g., during prolonged parking, maintenance, or roadside work). Some models include a step, facilitating access to the cargo area.
Q7: Can the color and size be customized?
A: Yes. The standard size is Width 1800mm × Length 850mm × Height 350mm. Custom sizes and colors are available (standard color is red/white).
Q8: How much does the product weigh? Will it affect the vehicle's payload?
A: It weighs approximately 98.3 kg (varies slightly depending on vehicle specifications). Its lightweight design has minimal impact on the vehicle's overall load capacity.
Q9: Does it have any safety certifications?
A: Yes, it has passed overseas safety test certifications. Collision tests conducted by a Japanese vehicle laboratory have verified its effectiveness in shortening braking distance during a rear-end impact.
Q10: What's the difference between this and a standard rear bumper/guard?
A: Standard rear bumpers are often fixed and lack dedicated energy-absorbing design. This product offers:
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Telescopic structure for flexibility and space-saving
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Patented energy-absorbing material for superior impact mitigation
-
Combined underrun prevention and reflective warning, integrating active and passive safety features.
Q11: What are the typical use cases?
A:
-
Long-haul freight and logistics fleets
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Vehicles at construction sites
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Temporary parking, vehicle maintenance situations
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High-risk road transport (e.g., highways, night driving)
Q12: Does it require maintenance?
A: The structure is robust. Routine maintenance mainly involves checking the mounting bolts for tightness and keeping the reflective sheeting clean. The energy-absorbing material requires no maintenance.
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