Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds
Journal Article
Llewellyn, R., Cowie, J., & Fountas, G. (2021)
Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds. Energies, 14(21), 7209. https://doi.org/10.3390/en14217209
Vehicle speeds have a direct relationship with the severity of road crashes and may influence their probability of occurrence. Solar-powered active road studs have been shown ...
Naturalistic measurement of driver eye height and object height using photogrammetry
Journal Article
Llewellyn, R., Sarkar, P., & Taylor, M. D. (2021)
Naturalistic measurement of driver eye height and object height using photogrammetry. Proceedings of the ICE - Transport, 174(7), 430-440. https://doi.org/10.1680/jtran.18.00124
Driver eye height and object height are key factors in the derivation of basic parameters for safe and economically efficient highway design. This study critically reviews pr...
Improving Lane Adherence at Signalised Roundabouts with Intelligent Road Studs - A Case Study
Presentation / Conference
Llewellyn, R. (2017, September)
Improving Lane Adherence at Signalised Roundabouts with Intelligent Road Studs - A Case Study. Paper presented at JCT Traffic Signals Symposium
Spiral markings at signalised roundabouts improve traffic flow but can reduce safety due to poor lane discipline. This paper describes an innovative method of improving lane a...