Performance Requirements for Motor Vehicle Headlamps
- Ground Vehicle Standard
Title of document changed to remove replaceable bulb restriction for this document.
Table of Contents changed to remove “replaceable bulb” on Figures 1, 3, and 4. Figure titles also changed. Table of Contents updated to mirror changes in the document.
Revised section 3 to remove definitions duplicated from SAE J387 and added definitions for Integral Beam Headlamp, Combination Headlamp, Replaceable Bulb Headlamp, and Replaceable Light Source Headlamp. Revised Replaceable Light Source definition. Removed H-V axis definition.
Updated section 4 to include markings for Integral Beam Headlamps and Combination Headlamps. Changed title of 4.5 to Optical Axis Marking for a more accurate description of this section.
Revised Section 5 to more closely match SAE J575. Also, removed duplicate wording from SAE J575 and just referred to SAE J575 when appropriate.
Revised Section 6 to match Section 5 renumbering. Also, removed duplicate wording from SAE J575 and just referred to SAE J575 when appropriate.
Revised the 10U-60U measuring procedure to ensure that the test is repeatable and accurate. Width of scans revised to ±20 degrees to reflect only the important area for veiling glare. Graphics changes as required to reflect the zone.
Added similar requirements for two zones defining 0U-10U as previously there were no requirements/restrictions for this zone. “Zone 2” created to define requirements for the left side of the beam pattern and “Zone 3” created to define the requirements for the right side of the beam pattern.
Moved Figures into the body of the text and deleted photo Tables as they are incorporated into the figures. Figures renumbered as appropriate. Figures duplicated in SAE J575 removed.
Added text describing the photometric charts and added some chart footnotes into the document text.
Modified Scope to match actual contents of document by removing the words “material requirements, design requirements, and design guidelines.”
|Ground Vehicle Standard||Single Conductor Cable for Heavy-Duty Applications - Truck and Bus|
|Ground Vehicle Standard||Reflex Reflectors|
|Ground Vehicle Standard||Manual Slack Adjuster Performance Requirements|
Data Sets - Support Documents
|Unnamed Dataset 1|
|TABLE 1||DIMENSIONAL SPECIFICATIONS FOR LOCATION OF AIMING PADS ON HEADLAMP UNITS|
|TABLE 2||COMBINATIONS OF AIM MECHANISMS AND AIM TOLERANCE ALLOWED|
The Road Illumination Devices Standards Committee is part of the Lighting System Steering Committee that reports to the Motor Vehicle Council (MVC). The Committee is responsible for developing and maintaining SAE Standards, Recommended Practices, and Information Reports related to lighting devices that serve to provide forward illumination on the roadway, including headlamps, fog lamps, auxiliary high and low beam lamps as well as halogen and arc discharge source lamps used in these devices. The following task forces have been developed under the committee's scope: J1735 Harmonized Headlamp Beam Task Force J583 Fog Lamp Task Force J2111 Headlamp Washer Task Force J1383 Headlamp Task Force J2585 Headlamp Mounting Height Task Force J2282 Distributed Lighting Task Force Replaceable Bulb Task Force Coated Bulb Task Force J852 Front Cornering Lamps Rewrite Task Force J2591 Advanced Forward Lighting System (AFS) J2009 Rewrite Task Force J599 Lighting Inspection Code Task Force J2595 Sealed Beam Headlamps Task Force J2510 Front Fog Lamp Task Force J565 Rewrite Task Force Pedestrian Visibility Task Force Recent standards challenges have been the introduction of "discharge" source lamps into the automotive lighting industry, harmonization of light patterns with European standards and higher voltage automotive electrical systems. While arc discharge light sources held promises of higher light output and source brightness, they surfaced many new and unanswered questions. Task force work is now ongoing in an attempt to resolve all of the new issues. Even changes in light distribution from recently-improved headlamp light sources, compounded by an increase of large SUV and personal pick-up vehicles have caused a public outcry about "glaring" headlamps. In an effort to preempt regulatory action, the Committee has initiated task force work to find a solution. Finally, Vehicle voltage changes promise to become a significant lighting issue as the effects of higher voltages on the viability of filament lamp designs are researched and discussed. The committee also focuses on standards harmonization for a wide variety of unsettled differences between European (ECE) Standards and domestic (SAE and FMVSS) standards. Resolutions of the more significant differences in standards for fog and head lamps and distributive light sources have been reached. A further challenge remains in coordinating the new and improved standards with new and subtle insights into the human factors of vision and the importance of light and illumination for driver comfort and safety. Understanding the human factors of vision will take on a greater role in evaluating and enhancing the validity of new vehicle forward lighting standards. Participants in the SAE Road Illumination Devices Standards Committee include OEMs, suppliers, consulting firms, government, and other interested parties.