ISO 15638-2:2013

Overview - ISO 15638-2:2013 (TARV, CALM)

ISO 15638-2:2013 is part of the ISO 15638 suite for Intelligent Transport Systems (ITS) and defines a generic cooperative ITS service platform for Telematics Applications for Regulated commercial freight Vehicles (TARV) using the CALM (Communication Access for Land Mobiles) family of standards. It specifies common platform parameters including protocol coding, timing, performance and support interfaces (for example driver ID card / USB and other physical interfaces). The standard is intended to enable interoperable vehicle telematics, regulatory services and multi‑provider ecosystems across jurisdictions.

Key technical topics and requirements

• CALM-based platform architecture: Aligns TARV platform requirements with the ISO 21217 CALM ITS‑station reference architecture (host/router/gateway, services, access layers).
• Networking support: Includes IPv6 networking considerations (ISO 21210) and CALM non‑IP networking approaches (ISO 29281) to support diverse communication modes.
• CALM media and lower layers: Defines media‑specific capabilities and interfaces (e.g., M5, infrared, millimetre wave, cellular - GSM/UMTS - satellite, and other CALM media standards).
• Service and application management: Application initiation and session guidance, CALM management (ISO 24103), facilities layer and application lifecycle considerations.
• Support interfaces: Specifications for driver identification, physical interfaces to ancillary devices, and integration points for back‑office and roadside systems.
• Quality, testing and compliance: QoS requirements, test requirements, marking/labeling and intellectual property declarations to support certification and approval workflows.

Practical applications and who uses it

ISO 15638-2 provides the platform-level foundations for regulated and commercial telematics services used in:

• Digital tachographs, remote electronic tachograph monitoring
• On‑board mass monitoring and vehicle mass‑based charging
• Vehicle access monitoring and access control systems
• Emergency messaging/eCall and hazardous goods (ADR) tracking
• Driver work records, fatigue management, speed monitoring and enforcement

Primary users:

• Vehicle OEMs and telematics hardware suppliers designing on‑board ITS platforms
• Telematics service providers and application developers
• Regulators, approval authorities and certification bodies
• ITS integrators, roadside equipment vendors and testing labs

Related standards and ecosystem

ISO 15638-2 is part of the ISO 15638 TARV series and references CALM family standards such as:

• ISO 21217 (CALM architecture / ITS‑station)
• ISO 21210 (CALM IPv6 networking)
• ISO 29281 (CALM non‑IP networking)
• ISO 24103 (CALM management) and media-specific CALM standards (GSM/UMTS, satellite, millimetre, etc.)

By standardizing common platform parameters using CALM, ISO 15638-2 enables interoperable, secure and multi‑provider telematics solutions for regulated commercial freight vehicles and supports scalable deployment across jurisdictions.