Optimal strategies for adaptive curve lighting

Sivak, Michael; Schoettle, Brandon; Flannagan, Michael J.; Minoda, Takako

doi:10.1016/j.jsr.2005.05.003

Cited by 21 publications

(9 citation statements)

References 14 publications

(16 reference statements)

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“…By changing headlighting in response to roadway, environmental, and traffic conditions, adaptive headlighting offers a more favorable tradeoff between visibility and glare than can be achieved with traditional, fixed headlighting (Sivak, Schoettle, Flannagan, & Minoda, 2005). Some recent work on crash data has attempted to identify the highway geometries and traffic maneuvers (such as curves and turns at intersections) that might benefit most from adaptive lighting (Sullivan & Flannagan, 2007).…”

Section: Known Countermeasuresmentioning

confidence: 99%

Traffic safety in the U.S.: Re-examining major opportunities

Sivak

Luoma

Flannagan

et al. 2007

Journal of Safety Research

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Based on current understanding of the five major risk factors, and of the available countermeasures, there appear to be a variety of opportunities to make substantial gains in road safety using existing knowledge. The limited implementation of a variety of known countermeasures therefore appears to be inconsistent with high-level, strategic goals to improve road safety. Consequently, a recommendation is made to comprehensively re-examine the balance between the countermeasures discussed in this article and economic, mobility, and privacy concerns. IMPACT ON PUBLIC SAFETY: Such a re-examination is likely to result in broad support for these countermeasures, with a consequent major improvement in road safety.

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Section: Known Countermeasuresmentioning

confidence: 99%

Traffic safety in the U.S.: Re-examining major opportunities

Sivak

Luoma

Flannagan

et al. 2007

Journal of Safety Research

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“…The way in which the optics in this system have been designed to function together has not yet been seen or appreciated in the exterior lighting world. In addition to being a beautifully designed optical arrangement, the system also helps drivers take corners and curves more safely and consumes less energy while doing so due to the LED usage (Sivak et al, 2005).…”

Section: Lighting Device and Hardware Proposementioning

confidence: 99%

Benefits and challenges of controlling a LED AFS (adaptive front-lighting system) using fuzzy logic

Lukacs

Dassanayake

Magalhaes

et al. 2011

Int.J Automot. Technol.

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The vehicular illumination system has undergone considerable technological advances in recent decades such as the use of a Light Emitting Diode (LED) Adaptive Front-lighting System (AFS), which represents an industry breakthrough in lighting technology and is rapidly becoming one of the most important innovative technologies around the world in the lighting community. This paper presents AFS control alternatives using fuzzy logic (types 1 and 2) to determine its operating parameters taking into consideration the road conditions in the state of São Paulo (Brazil). Fuzzy logic is a well-known extension of the conventional (Boolean) logic that enables the treatment of uncertainty present in the information through the definition of intermediary membership values between the "completely true" and the "completely false". This technique or modeling strategy is particularly important when a multi-parameter decision must be taken or the decisions are based on the human knowledge. The results show the potential of the methodology proposed and its suitability for light control providing safer nighttime driving.

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“…Koito's earliest document (Kobayashi, 1991) mentions two kinds of optical systems in regard to AFS reference documents (ARTC, 2004;Desai, 2005;Decker and Schmidt, 2005;Yamamoto et al, 2004;Neumann, 2004;Kobayashi and Hayakawa, 1991;Hogrefe, 1997;Aoki, 1997;Lowenau, 1998;Manassero and Dalmasso, 1998;Hogrefe, 2000;Hamm and Rosenhahn, 2001a;Hoffmann, 2001;Sato et al, 2001;Hamm and Rosenhahn, 2001b;Sivak, 2002;Hamm, 2002a;Loewenau and Strobl, 2002;Hamm, 2002b;Hamm and Rosenhahn, 2003;Boebel and Rosenhahn, 2003; Downloaded by [Ryerson University Library] at 12:17 05 June 2016 Rosenhahn, 2003;Shibata et al, 2006;Bullough et al, 2006;Sivak et al, 2005;Anderson, 2004). One adds two rotatable mirrors in the general headlamp, and the other sets up moveable lenses (an aspheric concave lens and a Frensel convex lens) in front of the optical projecting system.…”

Section: Intruductionmentioning

confidence: 99%

“…Some research (Aoki, 1997;Hamm and Rosenhahn, 2001b;Hamm, 2002a;Boebel and Rosenhahn, 2003) depicts adjustable beam direction using rotatable reflectors with a base or auxiliary lamp. One paper (Sivak et al, 2005) analytically evaluates advantages and disadvantages of several curve-lighting strategies that move one or both low beams by various amounts. One patent (Anderson, 2004) designs three embodiments for moving the LED to adjust bending light beams.…”

Section: Intruductionmentioning

confidence: 99%