All Outputs (5)

Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds (2021)
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 to have a positive effect on driver confidence, but their impact on vehicle... Read More about Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds.

Active Road Studs as an Alternative to Lighting on Rural Roads: Driver Safety Perception (2020)
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), Article 9648. 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 potentially negative health effects. The issue is commonly mitigated through p... Read More about Active Road Studs as an Alternative to Lighting on Rural Roads: Driver Safety Perception.

Naturalistic measurement of driver eye height and object height using photogrammetry (2018)
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 previous approaches to the measurement of these values and investigates the c... Read More about Naturalistic measurement of driver eye height and object height using photogrammetry.

Engineering condition assessment of cycling infrastructure: Cyclists’ perceptions of satisfaction and comfort (2015)
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.

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 significant civil engineering infrastructure asset that currently contributes to... Read More about Engineering condition assessment of cycling infrastructure: Cyclists’ perceptions of satisfaction and comfort.

Travel plans: a critical comparison of the application of land use planning processes in England and Scotland (2014)
Journal Article
Llewellyn, R., Tricker, R., & Paton, D. (2014). Travel plans: a critical comparison of the application of land use planning processes in England and Scotland. Transport, 29(3), 235-247. https://doi.org/10.3846/16484142.2014.913260

A Travel Plan is a travel demand management tool which has the potential to alter the means of travel to or from any destination or origin of movement to modes of transport other than the private car. A Travel Plan typically comprises of a package of... Read More about Travel plans: a critical comparison of the application of land use planning processes in England and Scotland.