Energy saving in tunnels lighting using shading structures

Salam, Ahmed O. Abdul; Mezher, Kahtan

doi:10.1109/irsec.2014.7059842

Cited by 16 publications

(4 citation statements)

References 8 publications

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“…Among the solutions proposed and implemented for this purpose, we can find semi-transparent structures (Abdul Salam and Mezher, 2014;Peña-García et al, 2010Gil-Martín et al, 2011, Peña-García, 2019; pergolas with empty space between beams (Peña-García and Gil-Martín, 2013) or using diffusive materials to avoid flicker effect on the road (Gil-Martín et al, 2015;Peña-García et al, 2016a); and structures with different patterns of holes (García Garay et al, 2012;Drakou et al, 2015Drakou et al, , 2016Drakou et al, ,2017Cantisani et al, 2018b;Cantisani et al, 2018c). A. Peña-García and J. Cabeza-Lainez 2) Transfer of sunlight inside the tunnel: this solution does not require threshold displacement, but just the installation to collect and distribute the solar luminous flux inside the tunnel.…”

Section: Strategies To Decrease the Impact Of The Lighting Installati...mentioning

confidence: 99%

Daylighting of road tunnels through external ground-based light-pipes and complex reflective geometry

Peña-García

Lainez

2023

Tunnelling and Underground Space Technology

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Section: Strategies To Decrease the Impact Of The Lighting Installati...mentioning

confidence: 99%

Daylighting of road tunnels through external ground-based light-pipes and complex reflective geometry

Peña-García

Lainez

2023

Tunnelling and Underground Space Technology

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“…The exterior zone is the open road outside where the exterior environmental luminance

is constant.

is the average luminance value focused in a conical aperture of a 20° angle and looking forwards towards a centered point in the tunnel opening [ 77 , 78 ]. The entrance zone is the part of the tunnel where the lighting level is decreasing from the level at the end of the exterior zone to the level of the interior zone in the daytime.…”

Section: Model Descriptionmentioning

confidence: 99%

Modelling and Mitigating Secondary Crash Risk for Serial Tunnels on Freeway via Lighting-Related Microscopic Traffic Model with Inter-Lane Dependency

Chen

Song

et al. 2023

IJERPH

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This paper models and mitigates the secondary crash (SC) risk for serial tunnels on the freeway which is incurred by traffic turbulence after primary crash (PC) occurrence and location-heterogeneous lighting conditions along serial tunnels. A traffic conflict approach is developed where SC risk is quantified using a surrogate safety measure based on the simulated vehicle trajectories after PC occurs from a lighting-related microscopic traffic model with inter-lane dependency. Numerical examples are presented to validate the model, illustrate SC risk pattern over time, and evaluate the countermeasures for SC, including adaptive tunnel lighting control (ATLC) and advanced speed and lane-changing guidance (ASLG) for connected vehicles (CVs). The results demonstrate that the tail of the stretching queue on the PC occurrence lane, the adjacent lane of the PC-incurred queue, and areas near tunnel portals are high-risk locations. In serial tunnels, creating a good lighting condition for drivers is more effective than advanced warnings in CVs to mitigate SC risk. Combined ATLC and ASLG is promising since ASLG informs CVs of an immediate response to traffic turbulence on the lane where PC occurs and ATLC alleviates SC risks on adjacent lanes via smoothing the lighting condition variations and reducing inter-lane dependency.

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“…However, the most important milestone has been the irruption of strategies to introduce sunlight inside the tunnels themselves. These strategies are based on the total or partial shift of the tunnel zones with the highest energy consumption [17,18,19,20,21,22,23,24,25,26] and the introduction of sunlight through light-pipes or similar devices [27,28,29]. Along with the use of natural light for more sustainable tunnels, there are also new tools that evaluate the accuracy of each strategy for each tunnel [30,31].…”

Section: Socio-environmental Impacts Of Tunnel Lighting: the X-factormentioning

confidence: 99%

A Global Perspective for Sustainable Highway Tunnel Lighting Regulations: Greater Road Safety with a Lower Environmental Impact

Peña-García

Nguyen

2018

IJERPH

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Tunnel lighting installations function 24 h a day, 365 days a year. These infrastructures have increased exponentially and now connect quite distant locations, even on different continents. This has led European administrations and international regulatory bodies to establish regulations for tunnel safety with the lowest environmental impact. However, until now, these regulations have almost exclusively focused on traffic safety, and relegated sustainability to the background. Even though they recognize the need to reduce energy consumption, they do not propose any tools for doing so. Given the impact of these installations and the lack of a specific regulatory framework, Asian countries will soon be forced either to update previous standards for tunnel lighting or elaborate new ones. A better understanding of the weaknesses of European regulations combined with a willingness to embrace innovation could position Asia as a world leader in the regulation of more sustainable road tunnels. The objective of this research was to improve the sustainability of tunnel lighting installations through new regulations or amendments to existing ones, without impairing the mental well-being of users, who could potentially be affected by energy-saving measures. Accordingly, this paper presents and analyzes a broad proposal for formulating tunnel lighting regulations. The originality of this proposal lies in the fact that it integrates road safety, lower environmental impact, and user well-being. Furthermore, it is expected to broaden the perspective of regulatory bodies and public administrations with regard to tunnel installations, which would ultimately enhance their sustainability.

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Energy saving in tunnels lighting using shading structures

Cited by 16 publications

References 8 publications

Daylighting of road tunnels through external ground-based light-pipes and complex reflective geometry

Daylighting of road tunnels through external ground-based light-pipes and complex reflective geometry

Modelling and Mitigating Secondary Crash Risk for Serial Tunnels on Freeway via Lighting-Related Microscopic Traffic Model with Inter-Lane Dependency

A Global Perspective for Sustainable Highway Tunnel Lighting Regulations: Greater Road Safety with a Lower Environmental Impact

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