Evaluation of Glare from Daytime Running Lights
Evaluation of Glare from Daytime Running Lights
- New search for: M. Kirkpatrick
- New search for: R. K. Marshall
- New search for: M. Kirkpatrick
- New search for: R. K. Marshall
Experiments were conducted to determine effects of Daytime Running Light (DRL) intensity on driver discomfort glare when using internal and side rearview mirrors. DRL lamps were placed behind a test vehicle as if mounted on a following vehicle. Discomfort glare was evaluated as a function of lamp intensity, vehicle/lamp geometry, lamp-to-mirror distance, and driver age. Field tests and experiments have suggested that the use of DRL on vehicles may have potential for reduction of daytime collision likelihood and severity. While enhancement of vehicle conspicuity in daylight appears to increase with lamp intensity, questions have arisen involving possible counter-productive effects of high DRL intensity such as production of discomfort glare under dawn/dusk or overcast daytime illumination levels. Discomfort glare was found to be largely independent of lamp-to-mirror distance over the range studied. The finding implied that DRL lamp luminance in candela per unit area and DRL lamp area as well as intensity should be considered in recommending lamp design characteristics to limit discomfort glare. The data did not support the hypothesis that elderly drivers would experience more severe discomfort glare for a given lamp output than would younger drivers.
Document information
Evaluation of Glare from Daytime Running Lights
1989
91 pages
Report
No indication
English
Similar titles
Daytime running lights in Denmark
| British Library Conference Proceedings | 1995
Evaluation of the Conspicuity of Daytime Running Lights
| NTIS | 1990
Photometric Tests of Daytime Running Lights
| NTIS | 1984
Functional Requirements for Daytime Running Lights
| NTIS | 2003