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 ...
Active Road Studs as an Alternative to Lighting on Rural Roads: Driver Safety Perception
Journal Article
Llewellyn, R., Cowie, J., & Maher, M. (2020)
Active Road Studs as an Alternative to Lighting on Rural Roads: Driver Safety Perception. Sustainability, 12(22), https://doi.org/10.3390/su12229648
Drivers, particularly with increasing age, cite driving at night as being problematic and feeling unsafe. Ultimately this may result in self-regulation and avoidance, with pot...
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...
Parking enforcement activity and public attitudes to enforcement: a case study of Edinburgh, Scotland (UK) in the context of the EU Push and Pull project
Presentation / Conference
Rye, T. & Llewellyn, R. (2016, November)
Parking enforcement activity and public attitudes to enforcement: a case study of Edinburgh, Scotland (UK) in the context of the EU Push and Pull project. Paper presented at International workshop on the economics of parking, Barcelona, 28th November 2016, University of Barcelona
Effective parking enforcement is absolutely critical to the effective operation and to the public acceptability of on-street parking policy. Very little empirically-based aca...
Inattentional Blindness and road safety: the potential role of intelligent road studs in reducing accidents
Conference Proceeding
Llewellyn, R., & Ladyman, S. (2016)
Inattentional Blindness and road safety: the potential role of intelligent road studs in reducing accidents. In Proceedings of 11th ITS European Congress
In-vehicle distraction is often the subject of debate in relation to road safety. Distractions outside of the vehicle, however, are often overlooked. Both situations result in...
The Use Of Equality Impact Assessments In Scottish Local Authority Transport Projects
Presentation / Conference
Sherriff, G. & Llewellyn, R. (2016, May)
The Use Of Equality Impact Assessments In Scottish Local Authority Transport Projects. Paper presented at 12th Scottish Transport Applications and Research Conference, Glasgow, UK
Maximising the tourism benefits to the Scottish Borders of the Borders Railway
Presentation / Conference
Gibson, G., & Llewellyn, R. (2016, May)
Maximising the tourism benefits to the Scottish Borders of the Borders Railway. Paper presented at 12th Scottish Transport Applications and Research Conference, Glasgow, UK
No abstract avaliable.
Lighting the way: the use of intelligent road studs at spiral-marked roundabouts.
Presentation / Conference
Llewellyn, R. (2015, September)
Lighting the way: the use of intelligent road studs at spiral-marked roundabouts. Paper presented at European Transport Conference, Frankfurt, Germany
Engineering condition assessment of cycling infrastructure: Cyclists’ perceptions of satisfaction and comfort
Journal Article
Calvey, J., Shackleton, J., Taylor, M., & Llewellyn, R. (2015)
Engineering condition assessment of cycling infrastructure: Cyclists’ perceptions of satisfaction and comfort. Transportation Research Part A: Policy and Practice, 78, 134-143. https://doi.org/10.1016/j.tra.2015.04.031
The UK National Cycle Network comprises 23,660 km of cycling and walking paths of which a significant percentage is dedicated off-road infrastructure. This represents a signif...