Embedded Files
Group members
Group members
Staff:
PhD students:
Yutong Chen
Billy Iqbal
Yohanes Raniasta
Livanur Sen
Heyuan Sun
Qingyun Zheng
Previous members:
Gavin Tolan
Maan Balela
Shahab Gorjimahlabani
Chris Cheal
Intisar Hussain Elgadra
Choong Yew Chang
Hussain Qasem
Events
Events
Next events
Next events
2027: LumeNet (date and location tbc)
Previous events
Previous events
2025 Academic Forum, Copenhagen
2024: LumeNet, EPFL organised by Jan Wienold
2023: Academic Forum, Copenhagen
2022: LumeNet, Sheffield
2021: Velux Daylight Symposium (Online)
2020: LumeNet, Eindhoven (Online)
2018: LumeNet, Aalborg University, Copenhagen
2016: LumeNet, Belgium (organised by Peter Hanselaer); 2016 Flyer
2015: VELUX Daylight Symposium, London.
2014: LumeNet, Berlin Technical University, 10-11 April.
2013: VELUX Daylight Symposium, Copenhagen.
2012: LumeNet, Sheffield.
2011: VELUX Daylight symposium, EPFL Laussanne.
News
News
October 2026
October 2026
The research group will be attending the CIE workshop on Future Topics in Road Lighting (Turin, 13-15 October 2026). A major focus of this event is revision of CIE 115:2010. For our PhD students, attendance at such an event is a useful experience to see the connection between research and applied standards.
April 2026
April 2026
In October 2025 we were joined by a new PhD student, Qingyn Zheng. She is exploring the impact of greenery on pedestrian reassurance after dark, which complements the work by Yohanes Raniasta on route width and our previous studies on lighting. Secondary analyses of existing data suggest that both greenery and route width have significant association with evaluations of reassurance.
In the past year, Shahab Gorjimahlabani and Maan Balea were awarded their PhDs for theses on pedestrian reassurance and cycling traffic flow. Maan created an excellent video to summarise his research.
There are currently three primary aims to our research.
The first is generating credible data to support the pending revision to CIE 115:2010 and hence to national road lighting standards. This has included estimating the optimum illuminance for P-class lighting by applying segmented regression to the results of field studies of pedestrian reassurance and suggesting an additional lighting class.
The second is to promote consideration of replication studies in lighting research. With PhD student Heyuan Sun we are replicating a previous analysis of road traffic collisions in daylight and dark to test the effects of those decisions often considered to be arbitrary: the researcher who carries out an analysis, the analysis software used, the tool used for calculating solar altitude, and how RTC cases occuring in twilight are treated. Jim Uttley is the University of Sheffield’s Chair of the Open Research Working Group, and Local Lead for the UK Reproducibility Network.
The third aim is to improve the safety of cycling by the development of a novel approach to cycle lighting. The application of Heyuan's research is RTCs involving cyclists to identify the critical contexts and Billy Iqbal is testing the effectiveness of the proposed rear light.
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