Collaborators

Stephan Völker

Berlin Technical University

Fundamental issues of lighting for drivers: where they look, the influence of glare, and establishing background luminance. This work was conducted through co-supervision of Jan Winter, a PhD student.

We are currently working on lighting and cyclist numbers.

Winter J, Fotios S, Völker S. The effect of assuming static or dynamic gaze behaviour on the estimated background luminance of drivers. Lighting Research and Technology 2019; 51(3): 384-401.

Winter J, Fotios S, Völker S. The effects of glare and inhomogeneous visual fields on contrast detection in the context of driving. Lighting Research and Technology 2018; 50(4): 537-551.

Winter J, Fotios S, Völker S. Gaze direction when driving after dark on main and residential roads: Where is the dominant location? Lighting Research and Technology 2017; 49(5): 574-585.

Institute for Transport Studies

University of Leeds

We have projects with several members of this group.

Natsha Merat is CoI on the HAROLD project. That is an investigation of driver distraction and pedestrian conspicuity. Natasha is conducting trials with her driving simulator in parallel to our studies with a scale model.

Robin Lovelace is CoI on the SATURN project. At Sheffield we are measuring the impact of lighting on cyclist numbers: Robin will integrate those data in his models for increasing the uptake of active travel.

We are working on applications for further funding about pedestrian reassurance with Caroline Mullens.

Uttley J, Fotios S, Lovelace R. Road lighting density and brightness linked with increased cycling rates after dark. PlosONE 2020; 15(5): e0233105

Uttley J & Lovelace R. Cycling promotion schemes and long-term behavioural change: A case study from the University of Sheffield. Case Studies on Transport Policy, 2016: 4(2), 133-142.

Uttley J, Lee YM, Madigan R, Merat, N. Road user interactions in a shared space setting: Priority and communication in a UK car park. Transportation Research part F: Traffic Psychology and Behaviour 2020; 72: 32-46.

Velasco JPN, Lee YM, Uttley J, Solernou A, ... & Merat N. Will pedestrians cross the road before an automated vehicle? The effect of drivers’ attentiveness and presence on pedestrians’ road crossing behavior. Transportation Research Interdisciplinary Perspectives 2021; 12; 100466

Maria Johansson

Lund University

Lighting for pedestrians – how to measure the effect of lighting on our evaluations of other people.

Currently co-supervising a PhD student project at Lund investigating social interactions between pedestrians in public squares.

Fotios S, Johansson M. Appraising the intention of other people: ecological validity and procedures for investigating effects of lighting for pedestrians. Lighting Research and Technology 2019; 51(1): 111-130.

Michael Kent

Berkeley Education Alliance for Research in Singapore and

Sergio Altomonte

Université catholique de Louvain, Belgium

Investigations about methods used for measuring discomfort from glare.

Kent M, Fotios S, Altomonte S. Discomfort glare evaluation: The influence of anchor bias in luminance adjustments. Lighting Research and Technology 2019; 51(1): 131-146.

Kent MG, Fotios S, Altomonte S. Order effects when using Hopkinson's multiple criterion scale of discomfort due to glare. Building and Environment 2018; 136: 54-61.

Kent M, Fotios S, Altomonte S. An experimental study on the effect of visual tasks on discomfort due to peripheral glare. Leukos. 2019; 51(1): 17-28.

Kent M, Fotios S. The effect of a pre-trial range demonstration on subjective evaluations using category rating of discomfort due to glare. Leukos. Online first, 23/07/2019. doi.org/10.1080/15502724.2019.1631177

Kent MG, Fotios S, Cheung T. Stimulus range bias leads to different settings when using luminance adjustment to evaluate discomfort due to glare. Building & Environment 2019; 153; 281-287.

Fotios S, Kent M. Measuring discomfort from glare: recommendations for good practise. Leukos. 2021; 17(4): 338-358.

Yandan Lin

Fudan University

Experiments about how we look at other people.

Dong M, Fotios S, Lin Y. The influence of observation duration and procedure on luminance required for recognition of pedestrian’ faces. Lighting Research and Technology, 2015; 47(6); 693-704.

Lin Y, Fotios S. Investigating methods for measuring facial recognition under different road lighting conditions. Lighting Research and Technology, 2015; 47(2); 221-235.

Lin Y, Fotios S, Wei M, Liu Y, Guo W, Sun Y. Eye movement and pupil size constriction under discomfort glare. Investigative Ophthalmology and Visual Science, 2015; 56(3); 1649-1656.

Stephen Farrall

Department of Criminology and Social Sciences, University of Derby

Crime and fear of crime.

Fotios S, Unwin J, Farrall S. Road lighting and pedestrian reassurance after dark: a review. Lighting Research and Technology, 2015; 47(4) 449-469.

Fotios S, Robbins CJ, Farrall S. The effect of lighting on crime counts. Energies 2021; 14: 4099.

Kevin Houser

Penn State University, USA

Discussions aimed at promoting better experimental design in lighting research, with a focus on human factors experiments about spatial brightness.

Fotios S, Houser K. Using forced choice discrimination to measure the perceptual response to light of different characteristics. Leukos, 2013; 9(4); 245-259.

Houser KW, Fotios SA, Royer MP. A Test of the S/P ratio as a correlate for brightness perception using rapid-sequential and side-by-side experimental protocols. Leukos, 2009: 6(2); 119-137.

Fotios SA, Houser KW. Research methods to avoid bias in categorical ratings of brightness, Leukos, 2009; 5(3); 167-181.

Fotios SA, Houser KW, Cheal C. Counterbalancing needed to avoid bias in side-by-side brightness matching tasks, Leukos, 2008; 4(4); 207-223.

Veitch JA, Fotios SA, Houser KW. Judging the scientific quality of applied lighting research. Leukos 2019; 15(2-3): 97-114.

Ásta Logadóttir

Aalborg University

Stimulus range bias in the method of adjustment.

Logadóttir Á, Fotios SA, Christoffersen J, Hansen SS, Corell DD, Dam Hansen C, Investigating the use of an adjustment task to set preferred colour of ambient illumination, Colour Research and Application, 2013; 38(1); 46-57. DOI: 10.1002/col.20714.

Logadóttir Á, Christoffersen J, Fotios SA. Investigating the use of an adjustment task to set preferred illuminance in a workplace environment. Lighting Research and Technology, 2011; 43(4); 403-422.

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