Bus Rapid Transit, Safety, and Roundabouts: Evaluation of design solutions for roundabouts with Bus Rapid Transit based on safety and level of service of all modes

The popularity of Bus Rapid Transit (BRT) has been growing rapidly over the past years, where more and more cities add BRT to their public transport systems. Roundabouts are also growing and are popular intersection designs because they are one of the safest types of intersections and improve traffi...

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Main Author: Hafsteinsdóttir, Gudrun Birta (author)
Other Authors: van Nes, R. (graduation committee), van Oort, N. (graduation committee), Farah, H. (mentor), Skarphéðinsson, Albert (mentor), Delft University of Technology (degree granting institution)
Format: Master Thesis
Language:English
Published: 2022
Subjects:
Online Access:http://resolver.tudelft.nl/uuid:8bd51dbe-19d7-4e0e-8b29-4d4bda095f78
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spelling fttudelft:oai:tudelft.nl:uuid:8bd51dbe-19d7-4e0e-8b29-4d4bda095f78 2023-07-30T04:04:29+02:00 Bus Rapid Transit, Safety, and Roundabouts: Evaluation of design solutions for roundabouts with Bus Rapid Transit based on safety and level of service of all modes Hafsteinsdóttir, Gudrun Birta (author) van Nes, R. (graduation committee) van Oort, N. (graduation committee) Farah, H. (mentor) Skarphéðinsson, Albert (mentor) Delft University of Technology (degree granting institution) 2022-08-31 http://resolver.tudelft.nl/uuid:8bd51dbe-19d7-4e0e-8b29-4d4bda095f78 en eng http://resolver.tudelft.nl/uuid:8bd51dbe-19d7-4e0e-8b29-4d4bda095f78 © 2022 Gudrun Birta Hafsteinsdóttir Bus Rapid Transit Roundabout Safety Throughabout Evaluation Microsimulation master thesis 2022 fttudelft 2023-07-08T20:45:48Z The popularity of Bus Rapid Transit (BRT) has been growing rapidly over the past years, where more and more cities add BRT to their public transport systems. Roundabouts are also growing and are popular intersection designs because they are one of the safest types of intersections and improve traffic flow. It is, therefore, likely that in some cities a BRT route will go through a roundabout. To keep the priority of BRT and the safety effects of a roundabout, the evaluation of roundabouts with BRT based on safety and level of service (performance) of all modes is investigated. Some countries have already developed and built solutions for roundabouts with BRT, where the priority of the buses can differ. One solution, often called throughabouts, is where the exclusive bus lanes go through the centre island of the roundabout, giving full priority to the buses. However, few guidelines have been developed on roundabout solutions with BRT and there seems to be a disagreement about the effectiveness of these types between some countries. This thesis aims to reduce this research gap by developing an evaluation methodology that compares and evaluates different design solutions of roundabouts with BRT based on the safety and level of service of all modes. The evaluation methodology is also able to determine which design solution is the most optimal. The methods used to compare and evaluate the designs in the methodology are literature review, multicriteria analysis (MCA), microsimulations and calculations, and a case study. A case study of a roundabout in Reykjavik, Iceland is used to illustrate and test the methodology. Three design solutions are compared and evaluated where the priority configuration of the BRT is changed for each design. Design 1 is a regular roundabout where the buses drive through the intersection in mixed traffic. Design 2 is a throughabout where there are traffic signals for all entering traffic, and design 3 is a throughabout where there are traffic signals for the conflicting traffic. These ... Master Thesis Iceland Delft University of Technology: Institutional Repository Centre Island ENVELOPE(-67.000,-67.000,-67.883,-67.883) Lanes ENVELOPE(18.933,18.933,69.617,69.617)
institution Open Polar
collection Delft University of Technology: Institutional Repository
op_collection_id fttudelft
language English
topic Bus Rapid Transit
Roundabout
Safety
Throughabout
Evaluation
Microsimulation
spellingShingle Bus Rapid Transit
Roundabout
Safety
Throughabout
Evaluation
Microsimulation
Hafsteinsdóttir, Gudrun Birta (author)
Bus Rapid Transit, Safety, and Roundabouts: Evaluation of design solutions for roundabouts with Bus Rapid Transit based on safety and level of service of all modes
topic_facet Bus Rapid Transit
Roundabout
Safety
Throughabout
Evaluation
Microsimulation
description The popularity of Bus Rapid Transit (BRT) has been growing rapidly over the past years, where more and more cities add BRT to their public transport systems. Roundabouts are also growing and are popular intersection designs because they are one of the safest types of intersections and improve traffic flow. It is, therefore, likely that in some cities a BRT route will go through a roundabout. To keep the priority of BRT and the safety effects of a roundabout, the evaluation of roundabouts with BRT based on safety and level of service (performance) of all modes is investigated. Some countries have already developed and built solutions for roundabouts with BRT, where the priority of the buses can differ. One solution, often called throughabouts, is where the exclusive bus lanes go through the centre island of the roundabout, giving full priority to the buses. However, few guidelines have been developed on roundabout solutions with BRT and there seems to be a disagreement about the effectiveness of these types between some countries. This thesis aims to reduce this research gap by developing an evaluation methodology that compares and evaluates different design solutions of roundabouts with BRT based on the safety and level of service of all modes. The evaluation methodology is also able to determine which design solution is the most optimal. The methods used to compare and evaluate the designs in the methodology are literature review, multicriteria analysis (MCA), microsimulations and calculations, and a case study. A case study of a roundabout in Reykjavik, Iceland is used to illustrate and test the methodology. Three design solutions are compared and evaluated where the priority configuration of the BRT is changed for each design. Design 1 is a regular roundabout where the buses drive through the intersection in mixed traffic. Design 2 is a throughabout where there are traffic signals for all entering traffic, and design 3 is a throughabout where there are traffic signals for the conflicting traffic. These ...
author2 van Nes, R. (graduation committee)
van Oort, N. (graduation committee)
Farah, H. (mentor)
Skarphéðinsson, Albert (mentor)
Delft University of Technology (degree granting institution)
format Master Thesis
author Hafsteinsdóttir, Gudrun Birta (author)
author_facet Hafsteinsdóttir, Gudrun Birta (author)
author_sort Hafsteinsdóttir, Gudrun Birta (author)
title Bus Rapid Transit, Safety, and Roundabouts: Evaluation of design solutions for roundabouts with Bus Rapid Transit based on safety and level of service of all modes
title_short Bus Rapid Transit, Safety, and Roundabouts: Evaluation of design solutions for roundabouts with Bus Rapid Transit based on safety and level of service of all modes
title_full Bus Rapid Transit, Safety, and Roundabouts: Evaluation of design solutions for roundabouts with Bus Rapid Transit based on safety and level of service of all modes
title_fullStr Bus Rapid Transit, Safety, and Roundabouts: Evaluation of design solutions for roundabouts with Bus Rapid Transit based on safety and level of service of all modes
title_full_unstemmed Bus Rapid Transit, Safety, and Roundabouts: Evaluation of design solutions for roundabouts with Bus Rapid Transit based on safety and level of service of all modes
title_sort bus rapid transit, safety, and roundabouts: evaluation of design solutions for roundabouts with bus rapid transit based on safety and level of service of all modes
publishDate 2022
url http://resolver.tudelft.nl/uuid:8bd51dbe-19d7-4e0e-8b29-4d4bda095f78
long_lat ENVELOPE(-67.000,-67.000,-67.883,-67.883)
ENVELOPE(18.933,18.933,69.617,69.617)
geographic Centre Island
Lanes
geographic_facet Centre Island
Lanes
genre Iceland
genre_facet Iceland
op_relation http://resolver.tudelft.nl/uuid:8bd51dbe-19d7-4e0e-8b29-4d4bda095f78
op_rights © 2022 Gudrun Birta Hafsteinsdóttir
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