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There is concern that the greater light output and increased beam pattern widths of some headlamp systems may be resulting in higher glare exposures to drivers for longer times. A set of experiments… (More)
A field study was conducted to extend fundamental findings about visual performance at mesopic light levels to a driving context. Subjects participating in this field study drove a vehicle along a… (More)
Headlamp glare is an issue that has grown in terms of public awareness over the past decade. Developments in light source technologies and optical design have resulted in headlamp systems with higher… (More)
This experiment tests the hypothesis that light sources that produce smaller pupil sizes ensure better achromatic visual task performance at the same photopic illuminance. Two groups of subjects, one… (More)
- Yukio Akashi, J Neches
- 2004
Reducing the peak demand for lighting energy through load shedding can be an effective method of load management. However, before such a load-shed technique is applied to the real world, it is… (More)
N O R T H A M E R I C A N B I R D S 476 WILLIAM R. EVANS • OLD BIRD, INC. • 605WEST STATE STREET • ITHACA, NEWYORK 14850 • (CORRESPONDING AUTHOR; E-MAIL:WREVANS@CLARITYCONNECT.COM) YUKIO AKASHI •… (More)
This paper discusses a field study which examines headlamp glare. It investigates the role of spectrum, size and illuminance. It ascertains the relative magnitude of each of these variables and its… (More)
- Yukio Akashi, Mark S. Rea
- 2002
This document reports on a field study undertaken to measure peripheral visual performance under various headlamp conditions. The study include conditions that are typical of halogen and high… (More)
The study investigated the correlation between the subjective glare rating and the Unified Glare Rating (UGR). Experiments and analyses were carried out. The results showed that there was a good… (More)