Overview
ISO/TR 14933:2012 is an internationally recognized technical report published by the International Organization for Standardization (ISO). It outlines comprehensive test procedures for evaluating interactions between out-of-position vehicle occupants and deploying side air bags (SAB) in road vehicles. This guidance is crucial for improving side air bag design and ensuring occupant safety, as many vehicle occupants may not always be seated in their intended design positions, particularly in real-world scenarios and during side collisions.
This document specifies recommended dummies, instrumentation, and detailed test configurations spanning both front and rear seat positions. The focus is on providing a practical framework for static tests, which assess the effects of deploying SABs without the complexities of dynamic vehicle acceleration.
Key Topics
- Out-of-position occupant scenarios: Procedures address various seating positions and postures, including children on booster seats, small adults, and limbs resting on armrests or close to air bag modules.
- Dummies and measurement systems: Specifies anthropomorphic test devices (dummies) such as Hybrid III (children and small adults) and SID-IIs for different occupant sizes, referencing ISO/TR 12349.
- Air bag module positioning: Covers SAB locations including seat, door, roof rail, and armrest configurations, ensuring comprehensive coverage of likely deployment paths.
- Test configuration and procedure:
- Static test setups to control test conditions.
- Step-by-step occupant positioning.
- Details on seat adjustment, booster dimension, and dummy setup.
- Instrumentation and data collection: Recommends measuring head and body accelerations, neck forces and moments, thoracic and abdominal compression, and air bag deployment data using ISO 6487, SAE J211, and associated references.
- Safety and reproducibility: Emphasizes temperature and grounding requirements to avoid electrostatic discharge and ensure reliability.
Applications
ISO/TR 14933:2012 delivers practical value across the automotive industry and research sectors:
- Vehicle manufacturers: Utilize the test procedures during the development and validation of side air bag systems to identify and mitigate potential injury risks for occupants not in the standard seating positions.
- Component suppliers: Apply the guidelines when designing and assessing SAB modules to ensure compatibility with diverse vehicle interiors and real-world user behavior.
- Safety research organizations: Support studies on air bag effectiveness and injury biomechanics, leveraging the standardized methodologies to obtain comparable and reproducible data.
- Regulatory bodies: Reference this technical report when developing safety legislation or compliance tests related to side impact protection and occupant safety.
By facilitating consistent out-of-position air bag testing methods, ISO/TR 14933:2012 helps drive continuous improvement in roadway safety through better protective system design and a deeper understanding of air bag-occupant interaction dynamics.
Related Standards
For holistic occupant safety evaluation and side air bag system testing, the following standards are closely related to ISO/TR 14933:2012:
- ISO 6487: Road vehicles - Measurement techniques in impact tests - Instrumentation
- ISO/TR 12349: Road vehicles - Dummies for restraint system testing (all parts)
- ISO/TR 15827: Road vehicles - Test procedures for evaluating small female dummy arm and forearm interactions with driver frontal airbags and side airbags
- ISO/TR 15829: Road vehicles - Side impact test procedures for the evaluation of occupant interactions with side airbags by pole impact simulation
- SAE J211: Instrumentation for impact test (Parts 1 and 2)
These standards collectively provide a foundation for impact testing, dummy selection, and accurate biomechanical assessment, ensuring that side air bag systems are evaluated under realistic and varied conditions. Manufacturers and safety engineers are encouraged to integrate ISO/TR 14933:2012 with these references for robust occupant protection strategies.