Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Engineering
Calibration Of A Method For Selecting Roundabouts As A Function Of The Inner Island Treatment, J. Falciani, Antonio Pratelli, Michael T. Martello, Reginald R. Souleyrette
Calibration Of A Method For Selecting Roundabouts As A Function Of The Inner Island Treatment, J. Falciani, Antonio Pratelli, Michael T. Martello, Reginald R. Souleyrette
Reginald R. Souleyrette
It is generally accepted that a driver’s ability to perceive, recognize, and react to surroundings contributes to safer roads. The objective of this paper is to investigate the perceptibility of roundabouts as influenced by their most distinctive feature – the central island treatment. Previous work has shown how visual perception of central island treatment can improve road safety performance. Recently, the authors have suggested a roundabout central island treatment classification scheme with three categories: Reduced, Compressed and Slender. Classifying roundabout central island treatment types was necessarily somewhat subjective. This paper introduces a more quantitative measure for central island visual perception, …
Two Roundabouts Are Better Than One (Comparison Of Roundabout Designs For A Complex Rural Interchange In Tuscany, Italy), Antonio Pratelli, Reginald R. Souleyrette, Michael T. Martello
Two Roundabouts Are Better Than One (Comparison Of Roundabout Designs For A Complex Rural Interchange In Tuscany, Italy), Antonio Pratelli, Reginald R. Souleyrette, Michael T. Martello
Reginald R. Souleyrette
This paper summarizes the calculations and considerations for a comparative assessment between three alternative proposals for redesign of the interchange between the Pisa North toll plaza of Motorways A11 and A12 and the Via Aurelia (highway SS1) located in the Migliarino region of Tuscany, Italy. The complex interchange also includes access to a local minor road, (Via Traversagnola) and is topographically constrained by the proximity of an important drainage channel which runs alongside the Via Traversagnola. Three designs are evaluated: first, a large elliptical layout, second, a very large circular layout, and third, a layout with twin large roundabouts and …