Print this page Signalized Intersections Part II – Project Process and Analysis
Vincent D. Reynolds, MBA, P.E.
Course Outline
The basic function of signalized intersections is to sequence right-of-way between intersecting streams of users. Research has shown that, under the right circumstances, the installation of traffic signals will reduce the number and severity of crashes.
This 4 hour course is the second part of a three part series and will introduce to the reader to the project process and analysis methods of signal design. Part II provides tools that can be used to evaluate the safety and operational performance of an intersection.
This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of course materials.
Learning
Objective
At the conclusion of this course, the student would have learned the following:
- When site visits should be performed;
- Common concerns raised by pedestrians;
- Possible causes of intersection delays;
- Costs that are associated with initial construction and implementation;
- How to calculate collision rates;
- How to determine the weighting factor of the collision severity method;
- How to define the safety performance function;
- The advantages of using collision rates;
- When to use collision data;
- The main cause of rear-end collisions;
- How to determine the chi-square;
- Treatments identified for angle collisions;
- How to determine the collision modification factor;
- How to determine the collision reduction factor;
- The relation between the v/c ratio and capacity; and
- How to define capacity.
Intended Audience and Benefit
This is intended for planners, traffic engineers, highway engineers, designers, operation analysts, project managers, or any persons working in civil engineering field or anyone with an interest in signalized intersections.
Course Introduction
Intersections occur along roadways in order to connect intersecting streams of traffic. Several conflicts can occur at intersections which involve pedestrians, vehicles, and bicycles. These conflicts can be classified as merging, diverging and crossing. The basic function of signalized intersections is to sequence right-of-way between intersecting streams of users. Research has shown that, under the right circumstances, the installation of traffic signals will reduce the number and severity of crashes.
Course Content
This course will introduce to the reader to the project process and analysis methods of signal design. Part II provides tools that can be used to evaluate the safety and operational performance of an intersection. Chapters 5-7 are the sections that are required to be read in order to complete the quiz for this Part of the series; the remaining chapters are covered in Parts I and II of this course.
Signalized Intersections Part II – Project Process and Analysis
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Course Summary
The information presented in this course provided a detailed overview of the design and operation of signalized intersections.
Using good engineering judgment is always paramount in any situation. Utilizing good judgment and the knowledge gained in this course will aid the reader with the knowledge to successfully design safe and efficient signalized intersections.
Related Links
For additional technical information related to this subject, please visit the following websites:
http://www.fhwa.dot.gov/
www.aashto.com
www.ite.com
Quiz
Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.
DISCLAIMER: The materials contained in the online course are not intended as a representation or warranty on the part of PDH Center or any other person/organization named herein. The materials are for general information only. They are not a substitute for competent professional advice. Application of this information to a specific project should be reviewed by a registered architect and/or professional engineer/surveyor. Anyone making use of the information set forth herein does so at their own risk and assumes any and all resulting liability arising therefrom.
