Enterprises exporting vehicles to the Eurasian Economic Union (EAEU) often raise a core question: which standards govern UN-R144 certification and how are test items categorized. The issue is more complex than it appears, as UN-R144 operates with a cluster of coordinated standards instead of a single specification. Besides, the EAEU and EU adopt two distinct technical systems respectively.
UN Regulation No.144 is a unified technical provision for vehicle safety under the UNECE 1958 Agreement, formally enforced in 2018. It sets core technical requirements for Accident Emergency Call Systems (AECS).
Nevertheless, UN-R144 only acts as a top-tier regulation defining compliance thresholds. A full set of supporting technical standards stipulate specific test methods and procedures, with separate standard systems for the EAEU and the EU.
-Underlying technical standards for EAEU ERA-GLONASS certification
·Overall system functional performance follows GOST R 55531, covering full-link technical requirements from trigger logic to data transmission of ERA-GLONASS;
·Minimum Set of Data (MSD) complies with GOST R 54620-2011, specifying MSD data fields, encoding formats and transmission logic;
·Audio coding for voice calls adheres to GOST R 55532; positioning performance metrics are regulated by GOST R 55534, defining key indicators such as GLONASS positioning accuracy and Time To First Fix (TTFF).
-Electromagnetic Compatibility (EMC) must satisfy UN R10, the universal EMC regulation for automotive electronic components, which is mandated for ERA-GLONASS testing in the EAEU. The overall framework for whole-vehicle certification falls under EAEU Technical Regulation TR CU 018/2011 Safety of Wheeled Vehicles.
-Unlike the EU eCall system built on EN 15722 plus EN 16062/16454, the two systems feature independent MSD formats and communication protocols with no interoperability. Test reports cannot be mutually recognized directly. Practically, products certified for EU eCall still require re-adaptation and testing per GOST standards for EAEU market access.
2. Breakdown of Core UN-R144 EAEU Test Items
UN-R144 EAEU certification tests are divided into seven major categories: Function, Positioning, Communication, Protocol, EMC, Environmental Reliability and Electrical Performance, each containing multiple sub-items.
2.1 Function Tests (Foundation of Certification)
Automatic trigger verification assesses system response upon simulated airbag deployment signals; manual trigger validates activation logic of the SOS button. Automatic collision trigger holds the highest priority, while manual SOS initiates calls independently without collision lockout.Call setup tests cover 2G, 3G and 4G frequency bands of major Russian mobile operators, with a maximum 10-second target for voice link establishment plus synchronized MSD transmission timing verification. MSD transmission tests check encoding compliance with GOST R 54620-2011, transmission integrity and accuracy. Two-way voice communication tests evaluate call quality, echo cancellation and noise reduction. Additional tests include call termination workflows and automatic reconnection after unexpected disconnection.
2.2 Positioning Performance Tests (High Technical Barrier)
ERA-GLONASS mandates GLONASS as the primary satellite system, with optional auxiliary compatibility for GPS, Galileo or Beidou.TTFF requirements: Cold start ≤60s at -130dBm signal strength; hot start ≤10s. Positioning accuracy: horizontal error ＜15m (95% probability), vertical error ＜35m. Sensitivity thresholds: cold start acquisition ≤-144dBm, steady-state tracking ≤-159dBm for standalone GLONASS; dual-mode indicators are negotiable but standalone GLONASS must meet full criteria. Position update rate ≥1Hz, plus mandatory dead reckoning capability per GOST R 55534 to sustain positioning during GNSS signal loss (e.g., tunnels).
2.3 Communication Performance Tests
Verify compatibility between onboard communication modules and Russian cellular networks. Tests cover receive sensitivity, transmit power, cell handover and tracking area update across operator frequency bands to guarantee stable communication under real road conditions.
2.4 EMC Tests
Executed per UN Regulation No.10 for complete eCall units, standalone devices and components; whole-vehicle testing is far stricter than unit-level tests.Radiated emission range: 30MHz–6GHz; radiated immunity: 80MHz–6GHz at 30V/m field strength. Additional tests include conducted emission/immunity and electrostatic discharge (ESD): ±8kV contact discharge, ±15kV air discharge. Whole-vehicle certification requires ESD testing on physical vehicles with significantly higher complexity and lead time than component testing.
2.5 Protocol Conformance Tests
Validate full alignment of MSD data formats, transmission protocols and communication signaling with GOST R 54620-2011; any encoding deviation of data fields may result in MSD rejection by Public Safety Answering Points (PSAP).
2.6 Environmental Reliability Tests
Storage and operating temperature: -40℃ ~ +85℃; damp heat test: 95% RH at 40℃; road vibration simulation; mechanical shock up to 30g acceleration. IP rating for dust and water resistance is an internal factory control index, not a mandatory UN-R144 test. These items confirm stable operation under extreme climate and road conditions.
2.7 Electrical Performance Tests
Adaptability verification for nominal 9–16V power supply, plus durability tests for four abnormal conditions: load dump, voltage drop, reverse polarity and overvoltage. Extreme working conditions include -14V reverse voltage (1 minute duration) and 24V overvoltage (1 hour duration).
3. Project Changes Brought by NG eCall in 2026
A critical transition is underway within the UN-R144 framework: shifting from traditional Circuit-Switched (CS) eCall to Next-Generation (NG) eCall.
·Legacy CS eCall relies on 2G/3G circuit-switched networks, transmitting MSD via in-band modulation over voice channels with test standards EN 16062 and EN 16454. Phasing out of global 2G/3G networks creates long-term reliability risks for this technical route.
·NG eCall operates on 4G/5G IMS packet-switched networks, delivering MSD via IP data packets with parallel voice and data transmission for higher efficiency and future multimedia rescue message expansion. Corresponding EU EN test specifications are CEN/TS 17184:2022 and CEN/TS 17240 with upgraded end-to-end conformance requirements. Note that EAEU NG eCall follows localized supplementary GOST rules alongside UN-R144, rather than fully adopting EU CEN test procedures.
Timeline: Manufacturers may voluntarily apply for NG eCall certification starting 2025. The EAEU has not released a mandatory NG eCall switchover schedule for new vehicle models, so traditional 2G/3G CS eCall remains compliant. Unlike the EU, the EAEU has not announced official 2G/3G shutdown timelines for UN-R144 applications, keeping legacy eCall a valid technical option for now. NG eCall rollout will likely lag behind the EU, yet the technical trend is definitive; VoLTE-compatible modules are recommended for new product design phases.
4. Matching Test Scopes to UN-R144 Certification Paths
Test coverage varies across four certification routes:
·Standalone Component Certification: Only tests function, protocol and electrical performance for control/communication modules; excludes whole-vehicle EMC and crash tests with minimal test scope and shortest lead time.
·Complete AECD (Accident Emergency Call Device) Certification: Covers all seven test categories (function, positioning, communication, protocol, unit-level EMC, environment, electrical) without whole-vehicle crash testing. AECD-certified units enable full reuse of core unit-level test results for subsequent whole-vehicle integration certification.
·Whole-Vehicle Integration Certification: Requires pre-installed AECD-certified devices. Assessment focuses on vehicle integration compliance, typically only adding whole-vehicle EMC and antenna performance tests without repeating full unit-level trials.
·Full Whole-Vehicle Certification: For systems with no prior independent certification, requiring all test items plus post-crash operational verification; this is the most comprehensive route with the highest cost and longest timeline.
BlueAsia provides pre-assessment of technical compliance for UN-R144 EAEU certification, aligning product design with standard requirements and identifying non-compliance gaps. Consultant of BlueAsia Testing & Certification: +86 13534225140 (Benson)
相关新闻
