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By-Wire

Digital control with zero compromise

REE replaces traditional mechanical systems with fully digital steer, brake, and drive-by-wire control for precision handling, real-time adaptability, and built-in redundancy. Centralized control through the REEcenter ECU enables OTA-tunable dynamics, brand differentiation, and scalability across vehicle programs.

Introducing the P7-C Class 5 electric chassis cab

Powered by REE®

It’s electric, but it’s not like anything you’ve seen before. Everything about the P7-C EV chassis cab was made to improve operational efficiencies. Effortless maneuvering, low noise, zero emissions, a minimal step-in height and excellent visibility all add up to a safe and efficient working environment. You don’t need to settle for legacy technology when transitioning your fleet to electric. You can make the most out of your investment now.

The P7-C is designed around four ingenious REEcorner® modules. Each are individually controlled by REEcorner ECUs, and the four corners’ function is controlled by REEcenter ECU. Traditional mechanical components have been eliminated between the wheels to create a fully modular design that’s nothing short of revolutionary.

The result is a commercial vehicle built for urban environments. REEcorner technology gives this 18,298 lb truck impressive maneuvering capabilities, and servicing is just as efficient. REEcorners are easily replaced, minimizing downtime for fleets by keeping vehicles on the road, and out of the shop.

The P7-C class 5 chassis cab represents the exciting next development in our P7 platform product family.

39 ft. Turning Circle

Navigate tight urban spaces with all-wheel steer (AWS) for

X-by-Wire control

Each corner is independent with redundancies for enhanced fail-operational design

24 in. Platform Height

Low step-in height saves time while reducing driver fatigue and injury risk.

Aerodynamic Design

Flat and low underbody reduces drag and energy consumption while maximizing range.

 

Clear Sight Lines

Large windshield and side glass reduces blind spots and offer optimum visibility for busy urban environments.

Low TCO

Designed for reduced downtime, quick servicing and long spans to pay off in the near- and long-term.

REEcorner

The REEcorner® integrates steering, braking, suspension, powertrain, and control into a single compact module positioned between the chassis and the wheel. Each corner is fully independent and managed by its own ECU, with the REEcenter ECU coordinating all corner-level functions. REE’s x-by-wire is the foundation of the REEcorner's unique design, enabling OEMs to build truly software-defined and autonomous-ready vehicles.

REEcorner® Technology Advantages

REE Auto is redefining the commercial vehicle industry with our fully modular software-defined electric vehicle platforms. We don’t believe the vehicles and fleets of the future need to be constrained by centuries-old technology and vehicle architecture. Instead, we seek to develop a versatile, customizable, modular platform that can be adapted to mission-specific applications. With this level of versatility, fleet operators, and OEMs can design and develop vehicles tailored to their exact requirements while reducing the total cost of ownership.

  • Best-in-class function – right-sized and right-functioned vehicles for optimal volumetric efficiency, maneuverability, serviceability, and safety
  • Energy efficiencies – Minimum aerodynamic drag and energy consumption
  • Operational efficiencies – reduced Total Cost of Ownership (TCO) and delivery cycle times, improved driver ergonomics, and faster time to market

REEcorner®

The REEcorner® integrates all critical vehicle components (steering, braking, suspension, powertrain, and control) into a single compact module between the chassis and the wheel. Each REECorner® is completely independent and controlled by its own electronic control unit (ECU), with a REEcenter ECU that controls all corner-level functions.

Fully sprung, American Axle & Manufacturing 3-in-1, high RPM drive unit, integrating oil-cooled electric drive unit, inverter, and gear box with drive-by-wire control.  Available all-wheel, front-wheel, or rear-wheel drive.

48V steer-by-wire technology available as front-wheel or all-wheel steer.

48V electro-hydraulic brake-by-wire technology.

Advanced data collection sensors for thousands of data points per second, per corner.

Smart monitoring for preventative maintenance, artificial intelligence (AI) and over-the-air (OTA) updates.

Capable of REEcorner® quick replacements in under an hour with single dry connection for 400V, 48V, and cooling lines.

Multi-Port Connector

REECorner ECU

3-in-1 Electric Drive Unit Steering Gear

Steering Actuator

Brake Actuator

Coil-Over Dampers

Electric Park Brake

Modularity & Scalability

Within a family of corners, significant synergies enable ease of modularity and scalability. The efficient development of vehicle variants can be achieved through REE’s hardware and software strategies:

  • Inboard of the subframe includes traction drive systems and steering & braking actuation. Here, configuration and modularity for 2WD vs. AWD, and front-wheel steer vs. all wheel steer are simply executed.
  • Inboard systems are relatively consistent from application to application, maximizing core system and component commonization.
  • Includes REEcorner® suspension and foundation braking systems.
  • Generally, these include industry-standard off-the-shelf components to allow for mission-specific customization while minimizing unique development requirements.

REE’s zone architecture and x-by-wire systems remain generally consistent throughout the entire range of applications from Class 1 to Class 6.  This advantage of x-by-wire control enables significant development synergies by preserving core FuSa and Autosar based Software Development achievements including motion and stability dynamic functions and ISO 26262 and 21434. 

System Architecture

  • Safety first: redundant sensing, ISO 26262 compliance, limp-home behaviors
  • Flexibility: modular steering options, tunable feedback, variable steering ratios
  • Integration speed: clean APIs, CAN FD/Ethernet support, ROS bridge
  • Lifecycle value: FOTA/SOTA, predictive maintenance, diagnostics

Core components and capabilities

  • High-reliability rack actuator with built-in redundancy
  • Steering feedback unit / yoke or wheel options
  • Redundant torque/angle sensing and safety microcontrollers
  • High‑speed comms (CAN FD, Automotive Ethernet) with time sync
  • Software stack with safety island and diagnostics

Software features

  • Variable steering ratio & effort maps by speed/mode
  • Road‑feel emulation with tunable feedback profiles
  • Brake‑to‑steer support and crosswind/road‑camber compensation
  • Diagnostics, FOTA/SOTA, black‑box logging, predictive maintenance
  • Safety state machine with limp‑home behaviors