Citation

Sivak M, Flannagan MJ, Sato T. Transp. Res. Rec. 1994; 1456: 99-111.

Copyright

(Copyright © 1994, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The light outputs of 150 production low-beam headlamps manufactured for use in the United States, Europe, and Japan were analyzed. The information is presented in tabular form by jurisdiction for the 25th-percentile, the median (50th-percentile), and the 75th-percentile luminous intensities from 20 degrees left to 20 degrees right and from 5 degrees down to 5 degrees up. The median luminous intensities by jurisdiction are also shown in a graphical form. To illustrate the utility of these data, calculations are presented for median illuminances from U.S. low-beam headlamps falling on points in space corresponding to sample locations of rearview mirrors, traffic signs, and road delineation.

Record URL:
http://onlinepubs.trb.org/Onlinepubs/trr/1994/1456/1456-012.pdf