Phasing Options for Traffic Signals

In Phasing Options for Traffic Signals, you'll learn ...

• NEMA vehicle phase numbering conventions
• The concepts of exclusive and concurrent pedestrian phases
• Phasing options and examples, including split phasing and quad phasing, as well as T-intersection phasing with either a 4-phase or 8-phase controller
• Single ring and dual ring phasing and parent/child and independent overlaps

Overview

Preview a portion of this course before purchasing it.

Credit: 2 CPD

Length: 23 pages

This Traffic Signal design course describes the process used for selecting and evaluating traffic signal phasing options. The material is intended to provide a practical overview of traffic signal phasing and its proper application. Included in the course is a discussion of NEMA phase numbering, overlap designations, and design treatments for handling left turns.

A basic knowledge of traffic signal operation is needed in order to understand the concepts presented in this course.

Learning Objectives

Upon completion of this course, participants will be able to:

• Explain NEMA phase numbering.
• Describe sample phase rotations.
• Explain the use of recall settings.
• Describe rings and barriers.
• Explain the use of overlaps.
• Describe dual-entry operation and conditional service.
• Identify left-turn treatment options.
• Compare signal-flashing options and alternatives.

Certificate of Completion

You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 15 questions. CPD credits are not awarded until the course is completed and quiz is passed.