Comparison of Delays at Signal-controlled Intersection and Roundabout

• Published in: Promet Vol. 21; no. 3; pp. 157 - 165
• Main Authors: Irena Ištoka Otković, Ivan Dadić
• Format: Journal Article
• Language: English
• Published: University of Zagreb, Faculty of Transport and Traffic Sciences 01-05-2009
• DOI: 10.7307/ptt.v21i3.221
• EISSN: 1848-4069
• ISSN: 0353-5320

Delays belong to standard parameters used for the evaluation of any type of intersection and they are taken in the evaluation of the level of service of an intersection. Intersections with shorter delays bring about economical benefits both for the users and the community, and enable greater efficiency of a traffic system, which is becoming a significant criterion with the increasing motorization. The case studies carried out in Europe and worldwide reveal that roundabouts bring delay savings if compared with other intersections of the same operational level and nearly the same traffic volume. The paper shows the results of the comparison analysis of the roundabout and the signal-controlled intersection in the city of Osijek, Croatia. The statistical indicators have given the basis for the evaluation of delays at the observed intersections, offering at the same time the possibility to compare the analysis conclusions on the local level with the conclusions of the case studies carried out throughout Europe and worldwide. KEYWORDS: delays, roundabout, signal-controlled intersection