The Accuspeed™ is a comprehensive locomotive remote control system that enables operators to safely control the locomotive via wireless remote control. The system continually applies the right amount of throttle or brake to maintain the selected speed regardless of track grade or train mass while the operator focuses on train movements, track conditions and personal safety. Accuspeed is designed for FRA-regulated railroad operations in the Americas.

  • Consistently maintains the speed selected by the operator
  • Used by FRA-regulated railroad operations
  • Compliant to 49 CFR § 229.15
  • Powered by RemoteIQ™ Rail
  • Works with the OCU-III

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Feature-rich controller that includes an embedded GNSS location, a patented method for pushing OCU positional data to the RCL system, bluetooth link to the internal archive record and a Wi-Fi port to accommodate future expansion

Dynamic Speed Control

Cattron’s patented speed control system streamlines the complexities of throttle and brake manipulation to maintain the selected speed regardless of track grade or train mass


Configurable to comply with 49 CFR § 229.15

Locomotive Brake System Compatibility

Pneumatic Systems (26-L, etc.), CCB-26, FastBrake

Two-way RF Communication

The OCU has digital feedback in the form of LEDs and text messages

Tilt Protection w/ Man-Down Radio Broadcast

If the controller is tilted beyond a certain threshold for a predefined period of time, the system goes into an emergency penalty

Wheel Slip Detection

Monitors existing locomotive wheel slip circuits to prevent wheel and track damage. The system automatically decrements the throttle command while the locomotive circuitry works in conjunction with the system to stop wheel slip

Vigilance Protection

Requires the operator to refresh critical commands during commanded movement and will initiate a safe stop after 60 seconds without critical updates


Standard one-year product warranty with extended warranty options available

ISO Certification

Manufactured in an ISO 9001:2015 certified operation

Train Brake Cycle Braking Protection

Provides configurable system protection from improper train handling

Maintenance Terminal PC Tool

Provides monitoring, configuration, Archive Record access and maintenance information either directly between a PC and the RCL system

Remote 4G Connectivity

Permits the user to connect to the RCL equipment remotely through an internet connection.

Hump Control

Excitation Control, Dynamic Brake Hump Control, Tower OCU Option, multiple HESC interfaces for dynamic hump speed adjustments.

Pullback and Stopping Protection (PSP)

Enforces a stopping trajectory to permit automatic point protection. PSP can also optionally automate grade crossing rules.

GPS Push Feature

OCU location is sent to the onboard equipment. This feature is used for troubleshooting, incident investigation and will be integrated to man down alerts through RemoteIQ™ for Rail in the future. This feature is patented in the USA, with applications pending globally.

OCU Lock Feature

Permits the operator to ‘lock’ the OCU. When locked, the OCU tilt protection, emergency override, bell activation and horn activation

Monitoring and Analytics

All current RemoteIQ Rail functions of reporting, alerting and RCL tracking, with the latest addition of OCU-III location tracking when the OCU is communicating to the RCL system.

RF Repeaters

Can be installed to extend the operating range

RF Protocol

220 MHz ATS, 450 MHz STS, 220 MHz CAI

Electric Handbrake Interface

Enables the locomotive remote control system to control various brands of electric handbrake systems

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