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E – 1592 – Fundamentals of Signalized Intersections

Intended Audience: Traffic, civil and highway engineers



What are the 3 aspects of signalized intersections, and why is it critical to understand the fundamentals of each?

This comprehensive online course developed by Dr. Rossow explores the 3 aspects of signalized intersections:

  1. User Needs
  2. Geometric Design
  3. Traffic Design and Illumination

The intersection forms considered in this course include signalized at-grade intersections and intersections with the potential for grade separation.. Providing a solid foundation of knowledge regarding the fundamentals of signalized intersections, this course is designed to be a useful learning tool for entry-level engineers as well as a refresher for more experienced engineering professionals.

This online engineering PDH course is based on Chapters 2-4 of Report No. FHWA-HRT-04-091 “Signalized Intersections: Informational Guide,” written by Lee A. Rodegerdts, et al, August, 2004, and sponsored by the Federal Highway Administration under Contract No. DTFH61-98-C-00075, Task Order No. B98C75-009.

Learning Objectives

At the successful conclusion of this course, you’ll be able to identify and discuss:

  • Human factors
  • Intersection users
  • Channelization
  • Horizontal and vertical alignment
  • Sight distance
  • Pedestrian facilities
  • Bicycle facilities
  • Traffic signal control type and phasing
  • Vehicle and pedestrian displays
  • Traffic signal pole layout
  • Traffic signal controller
  • Detection devices
  • Basic signal timing parameters
  • Signing and pavement marking design
  • Illumination design

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