The Heavy-Duty Transition: From Assisted Driving to Autonomous Freight

The freight industry is in transition, driven by both global and industry-specific trends. Globally, clean transportation initiatives are accelerating the need to reduce emissions, improve efficiency, and prepare vehicle platforms for electrified, connected and automated operation. Within the freight market, persistent driver availability and retention challenges, asset utilization demands and total cost-of-ownership pressures are creating urgency for fleets and OEMs to rethink how Class 7 and 8 trucks are designed and operated. As a result, autonomous trucking is moving from a long-range concept to a practical business case built around solving real-world fleet challenges.

For OEMs and fleets, the business case for autonomous trucks often comes down to three major cost drivers: the cost of the driver, the cost of the vehicle and the cost of the energy required to move it. Autonomy has the potential to address the first by reducing reliance on human drivers in defined operating domains. Electrified actuation with Steer-by-Wire (SbW) can help address the second and third cost drivers by eliminating dependence on hydraulic systems, supporting more flexible architectures and enabling alternative powertrains for more efficient energy use.

For Class 7 and 8 trucks, this transition depends on more than the autonomous driving stack itself. It requires safety-critical vehicle systems that can reliably convert perception, planning and decision-making into precise motion at the wheels. Steering, braking, power and redundancy architectures all become essential to enabling driverless operation within defined operating domains.

Creating the Roadmap

As OEMs, fleets and autonomy developers progress from advanced driver assistance toward Level 4 autonomous freight applications, steering becomes a foundational enabler. Heavy-duty platforms require actuation systems that can support high front-axle loads, deliver precise and repeatable response, integrate with autonomous driving systems and provide the redundancy needed for safe operation within defined operating domains. Electric actuation, High Availability Column Electric Power Steering (CEPS) and SbW can serve as building blocks in that transition.

For heavy-duty trucks, the shift to electrified steering is rarely a simple component swap. That means OEMs need to evaluate steering electrification as part of the broader vehicle architecture, not only as an assist technology, but as a foundation for software-enabled motion control.

Nexteer Technologies: The Bridge to Tomorrow’s Autonomous Freight Platforms

The transition from advanced driver assistance to Level 4 autonomous freight and beyond depends on more than perception software and path planning. It requires steering actuation that can translate autonomous driving commands into precise, repeatable vehicle motion under heavy-duty operating conditions.

Nexteer’s CEPS and SbW technologies support that transition through two complementary pathways:

• CEPS can add electric assist and control at the steering column while allowing OEMs to retain the existing hydraulic steering architecture.
• SbW can serve as a next-step architecture for electronically commanded steering, enabling redundant control paths, packaging flexibility and direct integration with autonomous driving systems.

Together, Nexteer’s CEPS and SbW give OEMs and autonomy developers practical technology pathways for progressing from today’s driver-assist systems toward future autonomous freight platforms.

High Availability Column Electric Power Steering (CEPS): From Hydraulic Steering to Software-Enabled Control

Nexteer’s High Availability CEPS gives OEMs a practical way to add electronically controlled steering assistance to heavy-duty platforms by overlaying electric actuation onto existing hydraulic steering architectures. For Class 7 and 8 platforms, this allows OEMs to support selected ADAS and automation features while working within current vehicle architectures, packaging constraints, and high front-axel load requirements.

High Availability CEPS can serve as a bridge between conventional hydraulic steering and more software-enabled motion control architectures, helping OEMs improve steering response, advance driver-assist functionality and prepare platforms for future autonomous freight applications.

Steer-by-Wire: The Next Stage of Autonomous Motion Control

Nexteer’s Steer-by-Wire can serve as a more advanced actuation backbone for autonomous driving by replacing the traditional mechanical connection between the steering wheel and road wheels with electronically controlled commands. For heavy-duty applications, this creates opportunities for redundant control paths, flexible packaging, variable steering response, and more direct integration with autonomous driving systems.

As autonomous freight applications move toward driverless operation within defined operating domains, SbW can help provide precise wheel-angle control and system-level redundancy that is needed to execute path-planning commands reliably. This makes SbW a key enabling technology for OEMs and autonomy developers preparing next-generation Class 7 and 8 trucks for Level 4 autonomous operation.

Nexteer’s recent move of SbW into series production underscores that by-wire steering is progressing from advanced development toward production-ready, motion-control architectures.

Whatever Your Waypoint, Nexteer Will Meet You There

As OEMs and autonomy developers plan the path from today’s vehicle platforms to future autonomous freight capability, steering technology is only one part of the decision. Whether electrifying an existing heavy-duty platform or designing a next-generation autonomous truck, the broader challenge is defining a motion-control architecture that aligns with the vehicle’s output requirements, voltage strategy, packaging constraints, redundancy needs and autonomous driving stack.

Nexteer brings the engineering experience to help customers evaluate those requirements early on and identify the right pathway forward. Whether the goal is to add electric control to an existing hydraulic architecture with CEPS or develop a next-generation autonomous platform with Steer-by-Wire, Nexteer can help bridge today’s heavy-duty truck architecture with the Level 4 autonomous freight requirements of tomorrow.