Traffic Signal Operations Specialist

From Wikipedia, the free encyclopedia

A Traffic Signal Operations Specialist (TSOS) is a certification sponsored by the Transportation Professional Certification Board, Inc., and promulgated by the Institute of Transportation Engineers. Prior to taking the required exam, an individual have at least five years of related working experience, though academic experience may be substituted for this requirement. Additionally, as the certification is not intended for professionals, licensed professional engineers are not permitted to be a certified TOPS.

The 100-question certification examination currently includes the following topics:[1]

  • Principles of Signals and Signal Systems
    • Signal Control and Functionality
    • Types of Signals
    • Supporting Hardware Devices and Subsystems
    • Signal Coordination and Progression
    • System Types
    • Special User Needs
    • Design Standards
    • Traffic Flow Theory
  • Elements of Signal Design and Implementation
    • Signal Phasing and Geometrics
    • Preemption and Priority
    • Pavement Markings and Signing
    • Detectors
    • Signal Head, Cabinet and Pole Placement
    • Temporary Traffic Control and Equipment Switch Over
    • Initial Turn-On and Timing Adjustments
  • Signal Timing
    • Clearance Intervals
    • Isolated Signal Timing
    • Coordinated Signal Timing
    • Data Collection Procedures
    • Performance Measures
    • Software and Analysis
    • Field Implementation
    • Systems Control
    • Documentation
  • Signal Operations and Safety Reviews
    • Safety Audit
    • Scheduled Field Reviews
    • Receipt of and Response to Public Inquiries
    • Responsive Field Reviews
    • Reevaluation of Phasing and Timing
    • Signal Removal or Modification
    • Asset Management and Documentation

  1. ^ Traffic Operations Practitioner Specialist. ITE (2006). Retrieved on 2006-16-11.
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