Author Type

Graduate Student

Date of Award

2014

Document Type

Thesis

Publication Status

Version of Record

Submission Date

October 2026

Thesis/Dissertation Advisor [Chair]

Kaisar, Evangelos I.

Abstract

Traditional intersections have always caused congestion, delay, and accidents. There are numerous geometric intersection designs that best fit each situation. This study performed an operational and safety comparison with unsignalized/signalized offset, Tintersections, a two-lane roundabout, and a modified roundabout to decrease the overall travel delay and increase the safety using a case study. Using data from a government source, all designs were tested in a calibrated micro simulation model and traffic signals were optimized using a signal optimization platform. Each design was tested with various balancing schemes, left turn percentages, and hourly volumes to determine the failure point. The unsignalized/signalized offset T-intersections, two-lane roundabout, and modified roundabout were compared by throughputs, travel delay, and travel time. After analysis, it was determined that the modified roundabout performed the best out of any design. All approaches had minimum travel delay while reducing the number of conflict points considerably with the modified roundabout.

Extent

80 p.

Comments

Includes bibliography.|Thesis (M.S.)--Florida Atlantic University, 2014.|FAU Electronic Theses and Dissertations Collection|Includes bibliography.

Identifier

FA00004110

Format

pdf

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