New type of roundabout

roundabout with "depressed" lanes for right turning - "flower roundabout"

Tomaž Tollazzi (Author), Marko Renčelj (Author), Sašo Turnšek (Author)

Abstract

Recently, many of the foreign traffic-safety analyses point out the low level of traffic safety in multi-lane roundabouts. This problem is resolved in several ways in different countries; however, the solution, whereby the number of conflict points is diminished (e.g. turbo roundabout) has proven to be the most successful. However, the turbo roundabout also has its deficiencies: it has conflict crossing points and larger reconstruction of the existing two-lane roundabout is needed when the turbo roundabout is to be implemented instead of the existing one. In the paper a new type of roundabout has been introduced; the roundabout with “depressed” lanes for right turning (“the flower-roundabout”). Financially speaking, the main advantage of the new type of roundabout is that it can be implemented within the dimensions of the already existing “normal” two-lane roundabout. From the traffic-safety point of view, the main advantage of the new type of roundabout is that it has no crossing conflict points.

Keywords

traffic safety;roundabouts;turbo roundabout;roundabout with "depressed" lanes for right turn;

Data

Language:	English
Year of publishing:	2011
Typology:	1.03 - Short Scientific Article
Organization:	UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
UDC:	625.739:656.1
COBISS:	15507990
ISSN:	0353-5320
Views:	1006
Downloads:	334
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary title:	Novi tip krožnega križišča: krožno križišče s "pritisnjenimi" pasovi za desne zavijalce - "flower roundabout"
Secondary abstract:	V zadnjem času mnoge tuje prometno-varnostne analize kažejo na nizko raven prometne varnosti večpasovnih krožnih križišč. Ta problem v različnih državah rešujejo na različne načine, kot najuspešnejši pa se je pokazal način z zmanjševanjem števila konfliktnih točk (npr. turbo krožno križišče). Vendar ima tudi turbo krožno križišče svoje pomankljivosti: ima konfliktne točke križanja ter v primeru, da želimo izvesti turbo krožno križišče namesto obstoječega dvopasovnega križišča, je potrebna večja rekonstrukcija križišča. V prispevku je predstavljen novi tip krožnega križišča - krožno križišče s "pritisnjenimi" pasovi za desno zavijanje. Glavna prednost takšnega tipa krožnega križišča je, da ga je možno izvesti znotraj meja obstoječega dvopasovnega krožišča. S stališča prometne varnosti ta tip krožnega križišča nima konfliktnih točk križanja.
Secondary keywords:	prometna varnost;krožna križišča;turbo krožno križišče;krožno križišče s "pritisnjenimi" pasovi za desno zavijanje;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 353-358
Volume:	ǂVol. ǂ23
Issue:	ǂno. ǂ5
Chronology:	2011
DOI:	10.7307/ptt.v23i5.153
ID:	10840791