A turbo roundabout is a particular type of roundabout where all lanes are bounded by traffic signs and by non-mountable curbs installed at entering and circulating lanes. Turbo roundabouts also have a very particular shape to accomplish the splitting of traffic streams and to prevent cars weaving through. These aspects make turbo-roundabouts more appropriate than roundabouts when a higher level of safety has to be guaranteed, particularly in presence of relevant pedestrian and two-wheels traffic volumes. Only in some traffic conditions, turbo roundabouts can offer higher capacities than conventional double-lanes roundabouts, so if more capacity must be guarantee a bypass lane can be added to the turbo roundabouts layout. This paper presents a closed-form model for the estimation of capacity, delays and level of service of turbo-roundabout equipped with Right-turn bypass lanes, considering the effect of geometric slip lane schemes, control type, vehicular and pedestrian flow.

Calculation of turbo- roundabouts with slip lanes / Guerrieri, M; Corriere, F. - STAMPA. - 459:(2013), pp. 595-600. ((Intervento presentato al convegno 4th International Conference on Applied Mechanics and Mechanical Engineering (ICAMME 2013) tenutosi a Singapore nel 11-12, ottobre 2013 [10.4028/www.scientific.net/AMM.459.595].

Calculation of turbo- roundabouts with slip lanes

GUERRIERI M;
2013

Abstract

A turbo roundabout is a particular type of roundabout where all lanes are bounded by traffic signs and by non-mountable curbs installed at entering and circulating lanes. Turbo roundabouts also have a very particular shape to accomplish the splitting of traffic streams and to prevent cars weaving through. These aspects make turbo-roundabouts more appropriate than roundabouts when a higher level of safety has to be guaranteed, particularly in presence of relevant pedestrian and two-wheels traffic volumes. Only in some traffic conditions, turbo roundabouts can offer higher capacities than conventional double-lanes roundabouts, so if more capacity must be guarantee a bypass lane can be added to the turbo roundabouts layout. This paper presents a closed-form model for the estimation of capacity, delays and level of service of turbo-roundabout equipped with Right-turn bypass lanes, considering the effect of geometric slip lane schemes, control type, vehicular and pedestrian flow.
Applied Mechanics and Mechanical Engineering IV
Svizzera
Trans Tech Publications
Guerrieri, M; Corriere, F
Calculation of turbo- roundabouts with slip lanes / Guerrieri, M; Corriere, F. - STAMPA. - 459:(2013), pp. 595-600. ((Intervento presentato al convegno 4th International Conference on Applied Mechanics and Mechanical Engineering (ICAMME 2013) tenutosi a Singapore nel 11-12, ottobre 2013 [10.4028/www.scientific.net/AMM.459.595].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/237882
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