Calculation of turbo- roundabouts with slip lanes

Marco Guerrieri, Marco Guerrieri

Risultato della ricerca: Other

3 Citazioni (Scopus)


A turbo roundabout is a particular type of roundabout where all lanes are bounded by trafficsigns and by non-mountable curbs installed at entering and circulating lanes. Turbo roundabouts alsohave a very particular shape to accomplish the splitting of traffic streams and to prevent cars weavingthrough. These aspects make turbo-roundabouts more appropriate than roundabouts when a higherlevel of safety has to be guaranteed, particularly in presence of relevant pedestrian and two-wheelstraffic volumes. Only in some traffic conditions, turbo roundabouts can offer higher capacities thanconventional double-lanes roundabouts, so if more capacity must be guarantee a bypass lane can beadded to the turbo roundabouts layout. This paper presents a closed-form model for the estimation ofcapacity, 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.
Lingua originaleEnglish
Numero di pagine6
Stato di pubblicazionePublished - 2013

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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