Technical Paper
World Harmonization and Procedures for Lighting and Signaling Products
1997-02-24
970913
Lighting and signaling regulations vary considerably around the world. There are 3 main regulatory regions: the United States, Europe and Japan. Rules vary in scope as well as in strictly technical requirements. The ECE has published the most comprehensive regulations, covering even headlamp leveling and cleaning devices. Japan has, for the time being, the least extensive ones. Standard lamp Regulations are pretty much alike, with the center high mounted stop lamp being the most notable exception. The most pronounced differences are for headlamps: all values above the horizon line are lower in Europe where being dazzled is not accepted. The cutoff line is also sharper in Europe, where visual aim has been common practice for 70 years. Europe specifies amber rear side markers and amber rear turn signals but prohibits red contour markings as well as rear turn signals and red rear side markers. Differences are more acute in the field of procedures.