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