Patent-Protected Anti-Jackknife Technology
From Unavoidable Risk to Preventable Outcome
Eliminate One of Trucking’s Most Catastrophic Loss Events
Save Thousands
of Lives per Year
Reduce the Cost of High-Severity Commercial Vehicle Losses for Fleets and Insurers
THE PROBLEM
Trailer jackknife events remain among the most dangerous and costly failures in commercial trucking. These incidents can result in multi-vehicle collisions, severe injuries or fatalities, cargo loss, and substantial liability exposure—often reaching six- to seven-figure claim severity, with additional risk of nuclear verdict outcomes.
Despite advances in braking, stability, and telematics-based safety systems, most existing solutions remain primarily reactive or predictive in nature, rather than physically preventing loss-of-control scenarios during sudden braking events, low-traction conditions, or dynamic roadway disturbances.
THE SOLUTION
The NO JACK Jackknife Prevention System enhances trailer stability by controlling articulation between the tractor and trailer during forward motion. The system mitigates the onset of instability by addressing the conditions where loss of control typically develops, before a jackknife event fully forms.
NO JACK engages dynamically based on vehicle operating parameters, including speed and ABS activation signals, maintaining trailer articulation within defined recoverable limits under braking and low-traction conditions.
Engineered for Real-World Loss Scenarios
NO JACK physically intervenes in the dynamics of the vehicle to prevent loss events in real time—even when human or environmental factors fail.
SAFETY Redundancy
Operates independently of driver input
NO JACK enhances trailer stability through automated response to vehicle operating conditions, including speed and ABS activation states, without requiring driver input.
The system operates as an independent trailer-mounted control module and utilizes wheel speed data to estimate trailer dynamics and detect braking system engagement in real time.
Operation does not depend on external telematics, network connectivity, or truck-to-trailer data exchange.
IF Loss of Air Pressure
In the unlikely event of trailer service line air-pressure loss, NO JACK defaults to a fail-safe mode. As the trailer’s spring brakes automatically engage, the system smoothly disengages—ensuring full compatibility with existing braking safeguards and preserving predictable vehicle behavior during emergency conditions.
IF Loss of Power
In the event of a loss of electrical power to the trailer, NO JACK gracefully disengages while the trailer’s braking system responds automatically. This ensures a seamless transition to the vehicle’s inherent fail-safe braking behavior without introducing instability.
Integrated into the trailer structure at the OEM level, NO JACK utilizes a pneumatically actuated retention pin that engages the fifth-wheel throat geometry. By constraining articulation within a controlled range, the system preserves coupling integrity while actively mitigating the onset of jackknife conditions.
Positioned between the trailer frame rails and mounted to the apron structure, NO JACK maintains a low-profile installation below the cargo floor. The system remains inactive under low-speed and reverse operating conditions, ensuring unrestricted articulation for standard coupling and maneuvering dynamics.
By targeting the root cause of jackknife incidents, NO JACK delivers measurable risk reduction by preventing one of the most severe loss events in commercial trucking. The result: protecting lives, lowering claim severity, and greater confidence among drivers and the public.
The kingpin and fifth-wheel coupling system remains the global standard for articulated trailers—trusted for its strength, reliability, and universal adoption across fleets. NO JACK integrates seamlessly with existing American and European fifth-wheel architectures, preserving this proven foundation while enhancing stability and control.
compatible with existing hardware
Articulation Limits
NO JACK allows for configurable articulation limits within the fifth-wheel throat, enabling fleets to tailor allowable trailer rotation to specific operating requirements. The system can be set within a range of approximately 10° to 15°, aligning with recoverable articulation thresholds consistent with FMCSA safety guidance.
normal roadway operation
without restricting vehicle mobility
NO JACK preserves sufficient articulation for normal driving maneuvers, including lane changes, tight exit ramps, and complex interchanges. At the same time, it maintains controlled limits that support vehicle stability during sudden or emergency maneuvers.
LANE CHANGES
ENTRY & EXIT RAMPS
CLOVERLEAF & COMPLICATED RAMPS
Practical APPLICATIONS
Autonomous Hauling
As the industry evolves toward increased automation and advanced driver assistance systems, trailer safety remains a critical factor in overall system reliability. Slick road conditions, roadside hazards, and unexpected traffic scenarios continue to challenge even highly advanced control systems, introducing risk to both assets and surrounding road users.
NO JACK enhances stability at the trailer interface, maintaining secure articulation under dynamic operating conditions. By addressing one of the most critical failure modes in coupled vehicles, the system supports a safer and more resilient transition toward increasingly automated freight operations.
Under the Hood
The NO JACK retention pin is manufactured from AISI 8630H alloy steel, the same class of high-strength material commonly used in kingpin applications. With an ultimate tensile strength of approximately 150,000 PSI and a yield strength of approximately 115,000 PSI, the component is engineered for high-load durability and long-term structural reliability.
The unit housing is constructed with high-tensile steel and securely mounted to the trailer apron assembly. NO JACK is exclusively an OEM-level integration during trailer manufacturing and is not intended for retrofit installation.
Compact and efficient in form factor, NO JACK has a total system weight of under 45 pounds, minimizing impact on payload capacity while maintaining structural performance requirements.
Partner With Us to Redefine Risk
NO JACK is actively engaging with insurance carriers, reinsurers, OEM trailer manufacturers, and commercial fleet operators to evaluate and deploy next-generation trailer stability technology.
We are seeking strategic partners who are focused on:
Reducing high-severity commercial auto losses
Improving fleet insurability and underwriting performance
Advancing safety innovation through real-world deployment
Partnership opportunities include:
Fleet pilot programs to validate real-world performance and risk reduction
Insurance collaboration to quantify loss mitigation and support new underwriting models
OEM integration discussions for factory-level deployment in new trailer production
Whether you are a carrier seeking to reduce exposure, a manufacturer advancing trailer safety systems, or a fleet operator prioritizing operational risk reduction, NO JACK provides a platform for measurable, active loss prevention.
We welcome the opportunity to collaborate on deployment, validation, and scaling of this technology across the commercial transportation ecosystem.