ISO 22839:2013

Overview

ISO 22839:2013 - Intelligent transport systems - Forward vehicle collision mitigation systems - Operation, performance, and verification requirements - defines requirements and test methods for Forward Vehicle Collision Mitigation Systems (FVCMS). The standard specifies the concept of operation, minimum functionality, system interfaces, performance criteria, and verification tests to show that an implementation meets the ISO 22839 requirements. Where possible, implementation choices are left to system designers. ISO 22839 aims to reduce rear‑end collision severity by enabling systems to warn drivers and automatically apply braking when a collision is imminent.

Key Topics and Requirements

• Concept of operation and functional model: State transition diagrams and functional descriptions for FVCMS operation (Active, Inactive, Off states, etc.).
• System classifications: By curve radius capability and by countermeasure types:
  • Collision Warning (CW)
  • Speed Reduction Braking (SRB)
  • Mitigation Braking (MB)
• Minimum enabling capabilities: Differentiated requirements for light and heavy vehicles.
• Performance requirements: Detection and assessment of forward vehicles, collision types, operating speed ranges, required target detection areas and discrimination (longitudinal, lateral, overhead).
• Countermeasure criteria: Pre‑collision urgency parameters, countermeasure action points, and braking activation behavior.
• Human–machine interface: Driver warnings, controls, and responsibility allocation.
• Validation and test methods: Test target specifications, environmental conditions (lighting, temperature, visibility), detection zone testing, functional ability tests, and target discrimination tests (including curved and straight road scenarios).
• Informative annexes: Topics such as mitigation effectiveness, minimum relative speed assumptions, and relationships with ACC and FSRA systems.

Applications and Who Uses It

ISO 22839 is practical for:

• Automotive OEMs and ADAS system designers developing FVCMS or integrated driver‑assist solutions.
• Tier‑1 suppliers of sensors, braking actuators, and control algorithms.
• Test laboratories and certification bodies performing performance verification and compliance testing.
• Regulatory agencies and procurement teams specifying safety requirements for vehicles and fleets.
• System integrators assessing interoperability with adaptive cruise control (ACC) and full-speed-range ACC (FSRA).

Adopting ISO 22839 helps organizations demonstrate consistent vehicle safety, reduce collision severity, and align product development with recognized automotive standards and ADAS performance requirements.

Related Standards

• ISO 15622 - Adaptive Cruise Control (ACC) systems
• ISO 15623 - Forward Vehicle Collision Warning Systems (FVCWS)
• ISO 22179 - Full Speed Range Adaptive Cruise Control (FSRA) systems

Keywords: ISO 22839, Forward Vehicle Collision Mitigation Systems, FVCMS, ADAS, vehicle safety, automotive standards, performance requirements, test methods.