In this enlightening discussion, John Bullough, a research scientist focused on lighting and health, joins Nate Rogers, author and critic of bright headlights, and automotive journalist Tim Stevens. They dive into the rise of intense headlights and their impact on road safety. The conversation reveals how LED technology, while bright, poses challenges for specific drivers, including those with astigmatism. They also explore the tension between manufacturers and regulators, highlighting the complexities of ensuring safety amidst flashy innovations.
The shift to brighter LED headlights, reaching up to 4,000 lumens, enhances road visibility but increases discomfort glare for drivers in smaller vehicles.
A regulatory gap exists in headlight brightness standards, prompting advocacy for legislative changes to ensure safer lighting technology and improved consumer awareness.
Deep dives
The Intensity of Modern Headlights
Modern headlights, particularly LED headlights, have significantly increased in brightness over the last few years. Traditional halogen bulbs emit around 1,000 lumens, while LED headlights can reach up to 4,000 lumens, leading to a much brighter driving experience. This shift towards brighter headlights is partly driven by the pursuit of higher safety ratings, as brighter lights are believed to improve visibility on the road. However, this increase in brightness comes with the downside of discomfort glare, which has raised concerns about safety for drivers of smaller vehicles who are particularly affected by the bright lights from higher-mounted SUVs and trucks.
Concerns Over Regulatory Oversight
There is currently a lack of stringent regulations governing the brightness of headlights in vehicles, leading to widespread issues with glare and safety. Organizations and individuals have attempted to petition the government for limits on light intensity, but many proposals have either been denied or ignored. The National Highway Traffic Safety Administration (NHTSA) is responsible for regulating automotive safety, yet they have not updated their regulations to account for the new LED technology, resulting in an oversight that has left many drivers vulnerable to glare. This regulatory gap has prompted advocacy groups, such as the Soft Lights Foundation, to push for legislative changes to ensure safer headlight standards.
Potential Solutions and Technologies
Emerging technologies, such as adaptive beam headlights, offer promising solutions to the glare problem caused by modern headlights. Unlike traditional systems that switch between high and low beams, adaptive beam systems can adjust the intensity of light directed to specific areas, reducing glare for oncoming traffic. Additionally, there is a call for the development of LED headlights that emit a warmer light similar to traditional halogen bulbs, which could be more visually comfortable. While these innovations are promising, widespread implementation may take time, highlighting the need for immediate consumer awareness and adjustments to headlight aim to alleviate current glare issues.
Drivers and passengers are right: Car headlights are brighter now. And the solutions aren't simple.
If you have a question for us, please give a call at 1-800-618-8545 or send a note at vox.com/askvox.
This episode was produced and sound designed by Hady Mawajdeh, edited by Miranda Kennedy, fact checked by Melissa Hirsch, engineered by Patrick Boyd and hosted by Jonquilyn Hill. Photo by zhen li for Getty Images.