ISO 23795-2:2024

Overview

Standard Reference: ISO 23795-2:2024
Title: Intelligent transport systems - Extracting trip data using nomadic and mobile devices for estimating CO2 emissions - Part 2: Information provision for eco-friendly driving behaviour

ISO 23795-2:2024 defines how vehicle trip data are extracted via nomadic devices (NDs) and mobile devices to measure and communicate CO2 emissions related to driving behaviour. The document specifies use cases, functional requirements and the datasets needed to analyse driving events (e.g., speeding, idling, sudden acceleration) and to provide actionable eco-driving guidance to drivers via nomadic devices and cloud services.

Key topics and technical requirements

• Use cases (UC1–UC9): Standardised event definitions including Speeding, Long Speeding, Sudden Acceleration, Sudden Start, Sudden Deceleration, Sudden Stop, Idling, Fuel-cut, and Economical Driving.
• Functional requirements for nomadic devices:
  • Reliable, consistent connection between ND and vehicle ITS station.
  • ND must receive vehicle status data (vehicle speed, RPM, fuel injection amount, etc.) and transfer it to cloud servers.
  • Power supply interfaces for stable ND operation.
• Datasets and data types: Per-use-case data items required for CO2 estimation and driver feedback. Examples include:
  • Trip ID and ND ID
  • Vehicle speed and driving time
  • Fuel injection amount and RPM
  • GNSS coordinates (longitude, latitude, altitude)
  • Event-specific counters (e.g., speeding duration, number of sudden stops)
• Interoperability elements: Definitions reference nomadic device identification (ND ID), UVIP (unified vehicle interface protocol), and short/long range communications (cellular 3G/4G/5G, IEEE 802.11x).

Practical applications

• Driver feedback and eco-driving apps: Provide real-time or post-trip coaching to reduce CO2 through reduced speeding, smoother acceleration/deceleration, and minimized idling.
• Fleet management: Quantify fleet CO2 emissions tied to driving behaviour for fuel efficiency programs and emissions reporting.
• Mobility service providers & telematics vendors: Implement standardised data extraction and event detection to support cloud analytics and user-facing eco-driving services.
• Policy & sustainability programmes: Support greenhouse-gas quantification aligned with national ETS / regulatory requirements and carbon reduction targets.

Who should use this standard

• Automotive OEMs and suppliers (infotainment, telematics)
• Mobile app developers and ITS solution providers
• Fleet operators and logistics companies
• Urban mobility planners, regulators and researchers focused on transport emissions

Related standards

• Other parts of the ISO 23795 series (for related extraction and measurement guidance)
• ISO/TC 204 outputs on Intelligent Transport Systems and ITS data interoperability

This standard helps ensure consistent, interoperable extraction of trip data from nomadic and mobile devices to reliably estimate CO2 linked to driving behaviour and to deliver effective eco-driving information.