ISO 10604:2026

Overview

ISO 10604:2026 - Road vehicles - Measuring procedure for aiming of luminous beams of front lighting devices is an international standard developed by ISO. This document defines standardized procedures for measuring and verifying the aiming of the luminous beams emitted by front lighting devices installed on road motor vehicles, excluding mopeds and motorcycles. Proper alignment of front lighting devices is crucial for ensuring roadway safety, reducing glare, and improving nighttime visibility.

The standard provides a comprehensive methodology for testing the orientation of headlights, covering not only the test environment but also preparatory steps, various measurement techniques, and calibration methods.

Key Topics

• Test Area Plane Requirements: Specifies the minimum dimensions and permissible tolerances for the testing environment, ensuring consistent and accurate measurement conditions.
• Vehicle Preparation: Details step-by-step instructions for preparing the vehicle, including environmental conditions, vehicle loading, tire conditions, and posture adjustments.
• Distant Aiming Screen Method: Outlines procedures for using a screen placed at a controlled distance to analyze the alignment of headlight beams.
• Movable Front-Light Testing System (MFTS): Explains how to use specialized movable equipment to measure beam orientation and includes alignment and calibration requirements.
• Photometric Measurement: Provides requirements for photometric measurement devices and procedures to record luminous intensity, ensuring accuracy and repeatability.
• Verification and Calibration: Describes how to validate the testing systems with standardized emitters and goniometers to ensure ongoing measurement reliability.

Applications

ISO 10604:2026 is applied throughout the automotive industry, including:

• Vehicle Manufacturers: To ensure that vehicles leaving production lines meet stringent headlamp alignment and safety requirements.
• Testing Laboratories and Inspection Centers: For periodic verification or certification of headlight aiming on in-use vehicles.
• Research and Development: During headlamp design and testing to meet regulatory standards or improve product performance.
• Aftermarket Services: Garages and service centers use these procedures during headlight maintenance or replacement to maintain correct aiming.

By adhering to this standard, practitioners help minimize headlight misalignment, which can cause hazardous glare and ineffective roadway illumination. This, in turn, supports compliance with national and international road safety regulations.

Related Standards

For comprehensive headlight testing and measurement, the following standards and regulations are often referenced alongside ISO 10604:2026:

• ISO 1176: Road vehicles - Masses - Vocabulary and codes, relevant for determining correct vehicle loading during testing.
• ISO/CIE 19476: Characterization of the performance of illuminance and luminance meters, vital for the specification of photometric devices.
• CIE 244: Characterization of Imaging Luminance Measurement Devices (ILMDs), important for advanced imaging-based measurement methods.
• UN R48: Uniform provisions concerning the installation of lighting and light-signalling devices.
• UN R149: Regulations for illumination devices (lamps) and systems for vehicles.

Practical Value

Implementing ISO 10604:2026 provides significant benefits:

• Enhanced Road Safety: Properly aligned headlamps reduce glare for other drivers and improve night driving visibility.
• Regulatory Compliance: Helps manufacturers and service providers meet legal and industry requirements for front lighting devices.
• Standardized Testing: Ensures repeatable and objective measurements across different facilities and vehicle types.
• Quality Assurance: Supports continuous validation of headlamp performance as part of routine maintenance or quality control processes.

By following the standardized procedures in ISO 10604:2026, stakeholders contribute to safer roads and higher-quality automotive lighting systems worldwide.