Featured Research

from universities, journals, and other organizations

Safety impacts of advanced car headlight systems evaluated

Date:
October 11, 2013
Source:
Rensselaer Polytechnic Institute (RPI)
Summary:
Scientists are evaluating the potential for new lighting technologies and approaches to improve driving safety at night, including new car headlight systems—swiveling or bending headlights that direct light into roadway curves, and adaptive or glare-free high beam headlight systems, which allow drivers to use high beam headlights while selectively dimming a portion of the beam when oncoming drivers are present, preventing glare to the oncoming drivers while providing improved visibility along the rest of the road.

Crash risks while driving at night are higher than during the daytime, but most roadways in the U.S. do not have roadway lighting. In fact, many state and local governments find it difficult to pay for installing, operating and maintaining roadway lighting. Despite these concerns, the proportion of nighttime driving is not likely to go down in today's round-the-clock economy, making car headlights increasingly important to nighttime driving safety. Through its Transportation Lighting and Safety program, the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute is evaluating the potential for new lighting technologies and approaches to improve driving safety at night, including new car headlight systems.

Related Articles


Senior Research Scientist and Adjunct Assistant Professor John Bullough presented recent LRC research results at two international conferences dedicated to driving, vision, lighting and safety. At the International Symposium on Automotive Lighting, held September 23-25 in Darmstadt, Germany, Bullough presented a paper entitled "Applying visual performance modeling to adaptive curve lighting safety data," looking at swiveling or bending headlights that direct light into roadway curves. Visibility analyses from LRC field studies using these systems in comparison with conventional, stationary low-beam headlights led to estimates of reduced nighttime crash frequencies of almost 4% along low-speed, sharp roadway curves and between 1% and 2% along higher-speed, shallower curves.

Earlier, at the Detroit Institute of Ophthalmology's The Eye, The Brain and The Auto research congress held in Dearborn, Michigan from September 16-18, Bullough presented "Adaptive vehicle lighting, visual performance and safety," a look at the potential safety benefits of adaptive or glare-free high beam headlight systems, which are beginning to appear on international vehicle models. These systems allow drivers to use high beam headlights while selectively dimming a portion of the beam when oncoming drivers are present, which prevents glare to the oncoming drivers while providing improved visibility along the rest of the road. The LRC's analyses suggest that nighttime crashes might be reduced by nearly 7% when adaptive high beams are used, relative to using low beam headlights.

The basis for both studies was the relative visual performance (RVP) model developed by LRC Director Mark Rea. Bullough and Rea previously showed that the safety benefits from roadway intersection lighting were in line with visibility improvements evaluated using the RVP model for different types of intersections. According to Bullough, "Since visual performance for nighttime driving situations can be predicted accurately, and nighttime crash data are difficult to collect, RVP could serve as a practical surrogate for crashes, allowing us to efficiently identify new lighting systems for maximizing driving safety at night."

Both studies were sponsored by the Transportation Lighting Alliance (TLA), consisting of vehicle and lighting manufacturers Audi, Automotive Lighting, Hella, OSRAM SYLVANIA, Philips, and Varroc Lighting.


Story Source:

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


Cite This Page:

Rensselaer Polytechnic Institute (RPI). "Safety impacts of advanced car headlight systems evaluated." ScienceDaily. ScienceDaily, 11 October 2013. <www.sciencedaily.com/releases/2013/10/131011153101.htm>.
Rensselaer Polytechnic Institute (RPI). (2013, October 11). Safety impacts of advanced car headlight systems evaluated. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2013/10/131011153101.htm
Rensselaer Polytechnic Institute (RPI). "Safety impacts of advanced car headlight systems evaluated." ScienceDaily. www.sciencedaily.com/releases/2013/10/131011153101.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

3D Printed Cookies Just in Time for Christmas

3D Printed Cookies Just in Time for Christmas

Reuters - Innovations Video Online (Dec. 18, 2014) A tech company in Spain have combined technology with cuisine to develop the 'Foodini', a 3D printer designed to print the perfect cookie for Santa. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
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

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