LIGHT Safety Act
Summary
What This Bill Does
The LIGHT Safety Act requires the Transportation Secretary, acting through the National Highway Traffic Safety Administration, to issue a final rule within one year revising Federal Motor Vehicle Safety Standard 108.
The revised standard must set a maximum allowable brightness for motor-vehicle low-beam headlamps. The maximum must be expressed in lumens or another photometric measurement NHTSA determines is appropriate.
The bill requires a ceiling but leaves its numerical level, test protocol, implementation dates, vehicle applicability, and choice of alternate measurement to the rulemaking. It does not directly regulate high beams, set a brightness number in statute, or prohibit every high-intensity lighting technology.
Who Benefits and How
Oncoming drivers, pedestrians, cyclists, and people sensitive to glare may face less visual impairment from excessively bright low beams. Nighttime road users gain a uniform federal ceiling. Vehicle buyers gain a safety standard applied through federal certification. Manufacturers receive one national test rather than potentially divergent approaches.
Who Bears the Burden and How
Automakers and headlamp manufacturers must test and potentially redesign systems that exceed the final ceiling. Suppliers with high-output products may lose sales. NHTSA must complete technical research, select a measurement, issue a final rule within one year, and enforce it. A ceiling set too low could reduce illumination for drivers, creating a visibility tradeoff the agency must evaluate.
Key Provisions
- Requires a final NHTSA rule within one year.
- Revises Federal Motor Vehicle Safety Standard 108.
- Establishes a maximum low-beam brightness.
- Requires a lumen-based or other photometric measurement.
- Delegates the numerical ceiling to NHTSA.
- Preserves agency choice of an appropriate test measure.
- Limits the statutory command to low-beam headlamps.
- Provides no fixed brightness number in the Act.
Evidence Chain:
This summary is generated from the full bill text using AI analysis. Expand "Detailed Analysis" below for identified beneficiaries/burden bearers with clause-level evidence links.
At a Glance
What This Bill Does
Requires NHTSA within one year to issue a final rule revising Federal Motor Vehicle Safety Standard 108 to establish a maximum allowable low-beam headlamp brightness measured in lumens or another appropriate photometric unit.
Key Policy Areas
Vehicle Headlamp Safety, Motor Vehicle Standards, Nighttime Driving, NHTSA Rulemaking, Automotive Lighting
Primary Purpose
Requires NHTSA within one year to issue a final rule revising Federal Motor Vehicle Safety Standard 108 to establish a maximum allowable low-beam headlamp brightness measured in lumens or another appropriate photometric unit.
Policy Domains
Section 2 maximum low-beam headlamp brightness
Identified Gains
- Drivers exposed to oncoming headlamp glare
- Pedestrians traveling near nighttime traffic
- Cyclists riding after dark
- People with glare-sensitive vision
- Vehicle buyers seeking lighting safety
- State safety officials using a federal ceiling
Identified Costs
- Automakers testing low-beam output
- Headlamp manufacturers redesigning bright products
- Lighting suppliers losing high-output sales
- NHTSA photometric-rulemaking staff
- NHTSA vehicle-compliance laboratories
- Drivers facing reduced forward illumination
Legislative Progress
In CommitteeReferred to the Subcommittee on Highways and Transit.
Referred to the Committee on Transportation and Infrastructure, and in …
Introduced in House
Ms. Perez introduced the following bill; which was referred to …
Stakeholder Effects
cui bono?How this legislation distributes effects. Mention counts reflect frequency, not effect magnitude.
Cyclists riding after dark, Drivers exposed to oncoming headlamp glare, Drivers facing reduced forward illumination
Positive-direction: Cyclists riding after dark, Drivers exposed to oncoming headlamp glare, Pedestrians traveling near nighttime traffic
Negative-direction: Drivers facing reduced forward illumination
Automakers testing low-beam output, Headlamp manufacturers redesigning bright products, Lighting suppliers losing high-output sales
NHTSA photometric-rulemaking staff, NHTSA vehicle-compliance laboratories
State safety officials using a federal ceiling
Bill Structure & Actor Mappings
Who is "The Secretary" in each section?
- "driver"
- → Driver exposed to oncoming low-beam glare
- "supplier"
- → Automotive lighting supplier
- "rulemaker"
- → National Highway Traffic Safety Administration
- "pedestrian"
- → Pedestrian traveling at night
- "manufacturer"
- → Motor vehicle or headlamp manufacturer
Note: {'scope_ids': ['low_beam_brightness_standard'], 'description': 'The statute mandates a low-beam ceiling but delegates the number, measurement, test, and implementation details to NHTSA; it does not directly set high-beam limits or ban a lighting technology.'}
Key Definitions
Terms defined in this bill
The federal standard governing vehicle lamps, reflective devices, and associated equipment that the rule must revise.
The low-beam headlamp output ceiling established by NHTSA in the required final rule.
Lumens or another technically appropriate unit selected by the Transportation Secretary.
We use a combination of our own taxonomy and classification in addition to large language models to assess meaning and potential beneficiaries. High confidence means strong textual evidence. Always verify with the original bill text.
Learn more about our methodology