Traffic Signal Timing

Overview

Traffic Signal Timing provides an understanding of both the theory and practice of traffic signal timing. This two-day (or three-day) course focuses on terms associated with signal timing, relating practice in the field with analysis completed using the Highway Capacity Manual and other traffic engineering software.

Participants will discuss the concepts of cycle length, split, forceoff, offset, phasing, as well as the signal timing process. In the context of regional and system/design considerations, the course will highlight the effects of actuated control including passage time, extension and pedestrian timing. The course will also cover the development of timing plans, explores types of signal control (including adaptive and priority-based), and investigates the relationship of signal timing to ITS.

Who Should Attend

This course is for new and experienced engineering personnel involved in analysis of signalized intersections, arterial street systems, and signal timing operations. While much of the course is focused on signal timing theory and practice, material will be introduced that challenges the state of the practice to move toward best practice that is currently being discussed among FHWA, ITE and TRB. The course is also useful for individuals working directly with ITS and signal systems.

Course Topics

  • Introduction to intersection signalization and signal coordination
  • Signal timing concepts and critical movement analysis
  • Overview of signal design elements and analysis related to signal timing
  • Isolated signal timing, including change and clearance intervals, pedestrian timing, and actuated timing parameters
  • Coordinated signal timing
  • Overview of common signal timing tools
  • Signal timing concepts and analysis for urban streets and interchange
  • Development and evaluation of signal timing plans
  • Advanced topics including next generation systems, metropolitan coordination of streets and freeways, ITS, preemption concepts, and transit priority