Featured Research

from universities, journals, and other organizations

Study Shows High-Intensity-Discharge Headlights Improve Night Visibility

Date:
July 2, 2001
Source:
Rensselaer Polytechnic Institute
Summary:
Researchers at the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute report that HID (high-intensity-discharge) headlights enable drivers to see more effectively at night than conventional tungsten-halogen lights.

TROY, N.Y. - Researchers at the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute report that HID (high-intensity-discharge) headlights enable drivers to see more effectively at night than conventional tungsten-halogen lights.

Related Articles


The LRC study has recently been featured in USA Today and on the NBC Nightly News.

Based on field experiments in which drivers responded to objects in their field of vision while using both sorts of lighting, LRC researchers concluded that drivers using HIDs were better at "detecting edge-of-roadway hazards, such as pedestrians and animals."

The study was conducted by John Van Derlofske, head of transportation lighting at the LRC, and lighting scientists John D. Bullough and Claudia M. Hunter, and was reported at a recent World Congress of the Society of Automotive Engineers.

Philips Automotive Lighting, an LRC partner and a major manufacturer of HIDs, commissioned the study.

"[HIDs] produce more light, last longer, and use less energy," Van Derlofske said. "There's no question they result in better visual performance. Now we've quantified that,"

HIDs are widely used on European automobiles and are growing increasingly popular in the United States. The National Highway Traffic Safety Administration has ruled HIDs do not exceed maximum illumination standards.

The study acknowledges criticisms leveled against HIDs that the bulbs produce more glare, and urges further study to quantify HID glare. "The problem with glare should be weighed against the improved visual benefits," the report says.


Story Source:

The above story is based on materials provided by Rensselaer Polytechnic Institute. Note: Materials may be edited for content and length.


Cite This Page:

Rensselaer Polytechnic Institute. "Study Shows High-Intensity-Discharge Headlights Improve Night Visibility." ScienceDaily. ScienceDaily, 2 July 2001. <www.sciencedaily.com/releases/2001/06/010620074356.htm>.
Rensselaer Polytechnic Institute. (2001, July 2). Study Shows High-Intensity-Discharge Headlights Improve Night Visibility. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2001/06/010620074356.htm
Rensselaer Polytechnic Institute. "Study Shows High-Intensity-Discharge Headlights Improve Night Visibility." ScienceDaily. www.sciencedaily.com/releases/2001/06/010620074356.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How Sony Hopes To Make Any Glasses 'Smart'

How Sony Hopes To Make Any Glasses 'Smart'

Newsy (Dec. 17, 2014) Sony's glasses module attaches to the temples of various eye- and sunglasses to add a display and wireless connectivity. Video provided by Newsy
Powered by NewsLook.com
Los Angeles Police To Receive 7,000 Body Cameras

Los Angeles Police To Receive 7,000 Body Cameras

Newsy (Dec. 17, 2014) Los Angeles Mayor Eric Garcetti announced the cameras will be distributed starting Jan. 1. Video provided by Newsy
Powered by NewsLook.com
Jaguar Unveils 360 Virtual Windshield Making Car Pillars Appear Transparent

Jaguar Unveils 360 Virtual Windshield Making Car Pillars Appear Transparent

Buzz60 (Dec. 17, 2014) Jaguar unveils a virtual 360 degree windshield that may be the most futuristic automotive development yet. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Researchers Bring Player Pianos Back to Life

Researchers Bring Player Pianos Back to Life

AP (Dec. 17, 2014) Stanford University wants to unlock the secrets of the player piano. Researchers are restoring and studying self-playing pianos and the music rolls that recorded major composers performing their own work. (Dec. 17) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins