Roundabout Design
In Roundabout Design, you'll learn ...
- Physical features and dimensions.of roundabouts
- Planning steps required to develop a roundabout
- Geometric design elements such as design speed, radius, and superelevation
- Traffic operation and safety at roundabouts, including capacity, performance analysis, conflicts and crash statistics
Overview
This course provide guidelines for the design, construction, operation, and maintenance of roundabouts.
The course begins with the definition of physical features and dimensions. Roundabouts are distinguished from other circular intersections and placed into categories such as mini-roundabouts, urban roundabouts and rural roundabouts. Both single-lane and double-lane roundabouts are included. Policy considerations are discussed such as multimodal considerations and benefits/costs associated with roundabouts. The planning steps to develop a roundabout are detailed. Areas of concern include number of entry lanes, selection of categories, comparing operations performance of alternative intersection types, space requirements and economic evaluation.
Traffic operation at roundabouts is discussed in terms of capacity and performance analysis. Roundabout safety is discussed in terms of conflicts and crash statistics. Geometric design elements such as design speed, radius, and superelevation are defined. Traffic design, including signing, pavement marking, and illumination, are detailed. Landscaping of the central island and splitter islands is discussed.
The course is designed to provide a basic knowledge of the design of roundabouts from which a designer can develop the safest and most efficient facilities possible.
Specific Knowledge or Skill Obtained
This course teaches the following specific knowledge and skills:
- Types of Circular Intersections
- Types of Roundabouts
- Operation
- Safety
- Geometric Design
- Traffic Design
- Illumination
- Landscaping
Certificate of Completion
You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 20 questions. PDH credits are not awarded until the course is completed and quiz is passed.
This course is applicable to professional engineers in: | ||
Alabama (P.E.) | Alaska (P.E.) | Arkansas (P.E.) |
Delaware (P.E.) | District of Columbia (P.E.) | Florida (P.E. Area of Practice) |
Georgia (P.E.) | Idaho (P.E.) | Illinois (P.E.) |
Illinois (S.E.) | Indiana (P.E.) | Iowa (P.E.) |
Kansas (P.E.) | Kentucky (P.E.) | Louisiana (P.E.) |
Maine (P.E.) | Maryland (P.E.) | Michigan (P.E.) |
Minnesota (P.E.) | Mississippi (P.E.) | Missouri (P.E.) |
Montana (P.E.) | Nebraska (P.E.) | Nevada (P.E.) |
New Hampshire (P.E.) | New Jersey (P.E.) | New Mexico (P.E.) |
New York (P.E.) | North Carolina (P.E.) | North Dakota (P.E.) |
Ohio (P.E. Self-Paced) | Oklahoma (P.E.) | Oregon (P.E.) |
Pennsylvania (P.E.) | South Carolina (P.E.) | South Dakota (P.E.) |
Tennessee (P.E.) | Texas (P.E.) | Utah (P.E.) |
Vermont (P.E.) | Virginia (P.E.) | West Virginia (P.E.) |
Wisconsin (P.E.) | Wyoming (P.E.) |