VS - Lighting Systems - Lighting - 998542

8.3.2. Photometric charts by country

As a summary:

l The cut-off line is part of the chart and it is a major point to comply with.

Automotive regulations are driven by:

l The UNECE - United Nations Economic Commission for Europe.

l Complementary points are defined to ensure no oncoming vehicles glare issues.

l The SAE International - Society of Automotive Engineers.

l 3 zones are set with min. and max. illumination limits.

l The JSAE - Society of Automotive Engineers of Japan.

8.3.1. Photometric charts depend on light sources Whatever the light source, photometric points are used to set limits to lighting systems in order to reach the appropriate comfort and security levels when driving at night. Halogen lamps cannot perform as well as Xenon lamps. Light source performances are taken into account in lighting system regulations and dedicated regulations apply to each light source application.

l The JASO - Japanese Automotive Standards Organization.

Lighting regulations for the United States, Canada, and Mexico (NAFTA) markets differ on some points for beams photometric charts but the basics are very similar and the aim is always to improve visibility and safety on the road. Automotive lighting systems nevertheless tend to be more and more global for an increased efficiency in car design and to ensure the vehicle can be marketed globally.

l Halogen and LED sources: ECE R112.

l Xenon: ECE R98.

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