Lower Beam Headlighting System Performance On-Vehicle Test Procedure Examination

Voyzey, Nick; Mazzae, Elizabeth N.; Baldwin, G.H. Scott; Andrella, Adam T.

i

Lower Beam Headlighting System Performance On-Vehicle Test Procedure Examination

2025-09-01
By Voyzey, Nick ; Mazzae, Elizabeth N. ; Baldwin, G.H. Scott ; ...

File Language:

English

Details

Creators:

Voyzey, Nick ; Mazzae, Elizabeth N. ; Baldwin, G.H. Scott ; Andrella, Adam T.
Corporate Creators:

United States. Department of Transportation. National Highway Traffic Safety Administration. Vehicle Research and Test Center
Subject/TRT Terms:

Automatic Control Automobiles FMVSS No. 108, Headlamps Laboratory Tests Low Beamed Headlamps Test Procedures Vehicle Lighting Devices
Publication/ Report Number:

DOT HS 813 702
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

United States. Department of Transportation. National Highway Traffic Safety Administration
Abstract:

The 2021 Infrastructure Investment and Jobs Act amended FMVSS No. 108 to include performance-based standards for vehicle lower beam headlighting systems to ensure they are correctly aimed and tested on vehicles to account for lamp height and lighting performance. This report summarizes an effort to develop a test procedure that assesses performance of lower beam headlighting systems while the headlamps are installed on the vehicle. This research evaluated accuracy and repeatability of the candidate test procedure that was based on previous NHTSA work to create a test procedure for assessing lower beam headlighting system performance and work by UMTRI to assess performance-based FMVSS No. 108 test methods. Seven light motor vehicle headlighting systems were tested. The vehicle measured illuminance averaged 7 percent higher than the laboratory measured illuminance. Overall, this effort revealed the challenges of an on-vehicle measurement method compared to a lab-based method.
Format:

PDF
Collection(s):

NHTSA - Vehicle Safety Research
Main Document Checksum:

urn:sha-512:33b8551885c154ac714769651f5a7818af63c620e402f8bf0fc224cee1cb4424ff624ba145d8a2f63e84d98b45c4360513b956db89b6590f5dd477e07902292f
Download URL:

https://rosap.ntl.bts.gov/view/dot/86560/dot_86560_DS1.pdf
File Type:

[PDF - 2.33 MB ]

File Language:

English

ON THIS PAGE

Details

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.