<abstract xmlns="http://www.w3.org/1999/xhtml">

The traffic capacity of a roundabout depends very much on the existing traffic volumes on each approach, each direction of travel having an impact on the other movements in the intersection, especially on those with which it conflicts.
Roundabouts where the turning maneuver has significant values, such as roads / streets where the left turn is allowed at long distances, substantially influence the capacity of the approach with which it intersects. This maneuver includes calculating delays and vehicle queues at all other arms, resulting in a reduction in their capacity and, ultimately, in the entire intersection.
As can be seen from the results of the analyzed roundabout, U-turn (which replaces the left turn movement) produces a significant increase in delays on the rest of the approaches, thus preventing further development of the community.
</abstract>

The traffic capacity of a roundabout depends very much on the existing traffic volumes on each approach, each direction of travel having an impact on the other movements in the intersection, especially on those with which it conflicts.
Roundabouts where the turning maneuver has significant values, such as roads / streets where the left turn is allowed at long distances, substantially influence the capacity of the approach with which it intersects. This maneuver includes calculating delays and vehicle queues at all other arms, resulting in a reduction in their capacity and, ultimately, in the entire intersection.
As can be seen from the results of the analyzed roundabout, U-turn (which replaces the left turn movement) produces a significant increase in delays on the rest of the approaches, thus preventing further development of the community.

Roundabout with a strong U-Turn traffic

Lecturer Ph.D. Eng., Technical University of Civil Engineering Bucharest

Romanian Journal of Transport Infrastructure

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Roundabout with a strong U-Turn traffic"}

The traffic capacity of a roundabout depends very much on the existing traffic volumes on each approach, each direction of travel having an impact on the other...

Roundabout with a strong U-Turn traffic

Publié en ligne: 23 août 2022

Pages: 1 - 14

DOI: https://doi.org/10.2478/rjti-2022-0003

Mots clés
roundabout, u-turn, control delay, intersection capacity

© 2022 Mihai Gabriel Lobază, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Roundabout with a strong U-Turn traffic

Publié en ligne: 23 août 2022

Pages: 1 - 14

DOI: https://doi.org/10.2478/rjti-2022-0003

Mots clésroundabout, u-turn, control delay, intersection capacity

© 2022 Mihai Gabriel Lobază, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
roundabout, u-turn, control delay, intersection capacity