Traffic Signal Management

Traffic Signal Management Plan

T2 Traffic Signal Tech Brief 2016-1; Traffic Signal Management Plan: What is it? and Why do I want one?
A quick reference on the benefits of developing a TSMP.

Traffic Signal Management Plans: An Objectives- and Performance-based Approach for Improving the Design, Operations, and Maintenance of Traffic Signal SystemsFHWA-HOP-15-038
Step-by-step instructions for documenting current activities, relating them to the agency’s goals and transportation objectives, and offers a structure that shows how the activities of all staff involved in traffic signal management support those objectives.

Improving Traffic Signal Management & Operations: A Basic Service Model - FHWA_HOP_09_055 Improving Traffic Signal Mgmt & Ops
A guide for developing a Traffic Signal Management Plan based on achieving good basic service in the context of current agency capability and resources.

Castle Rock Traffic Signal Management Plan - Final Castle Rock Traffic Signal Management Plan
A template for TSMP based on good basic service model.

National Traffic Signal Report Card - Technical Report 2012 National Traffic Signal Report Card - Technical Report 2012
A summary of the state of the practice in traffic signal management and operations. Agencies can use as a diagnostic tool at the screening level to improve their traffic signal management.


Traffic Signal Systems Engineering

System Engineering for Connecticut Traffic Management Systems

Connecticut Department of Transportation Systems Engineering Form (SEAFORM) for Municipal Traffic Management Systems
Form required when using State and Federal aid for municipal traffic signal projects.

CRCOG Traffic Signal Systems Handbook CRCOG Traffic Signal Systems Handbook
Guidance to promote consistency with CTDOT and FHWA requirements for system engineering processes.

General System Engineering

Systems Engineering for ITS - FHWA 2007 Systems Engineering for ITS
Provides an introduction for transportation professionals to systems engineering and a basic understanding of how it can be applied to planning, designing, and implementing intelligent transportation systems (ITS) projects.

Systems Engineering Guidebook for ITS - FHWA 2009 Systems Engineering Guidebook for ITS
Contains extensive process tailoring advice, metrics, deliverable templates, suggested roles, responsibilities, and capabilities of agencies and contractors, and comprehensive checklists for each process task to assure that all bases are covered.

Model System Engineering Documents for Adaptive Signal ControlModel System Engineering Documents for Adaptive Signal Control
Guidance to address the risks associated with ASCT implementation. The process involves exploration of the agencies needs and facilitates the development of requirements to facilitate the procurement of ASCT.


Traffic Signal Timing and Coordination

Signal Timing

Traffic Signal Timing Manual, Second Edition – NCHRP Report 812
Provides guidance to promote a multimodal, objectives and performance based approach to development of traffic signal timing to address the needs of pedestrian, bicycles, transit and automobiles.

Traffic Signal Timing Manual, First Edition – FHWA-HOP-08-024
A comprehensive synthesis of traffic signal timing design and operational concepts.

Signal Timing on a Shoestring – FHWA-HOP-07-006
This effort documents the minimum amount of data collection and optimization that should be performed in a signal retiming to acquire some appreciable benefits. This is aimed at jurisdiction or municipalities that cannot afford to perform more extensive data collection and analysis.

Signal Timing Under Saturated Conditions - FHWA_HOP_09_008 Signal Timing Under Saturated Conditions Guide
Under congested conditions, traditional objectives and performance measures shift from progression and minimizing delay to maximizing throughput and managing queues. The research revealed that long cycle lengths may not be more efficient at intersections where long queues starve turn lanes. In grid networks, the cycle length that is just long enough to reliably serve busses from a near-side stop was found through simulation to prevent the development of residual queues.

Performance Measures

Performance Measures for Traffic Signal Systems - Outcome Oriented Approach, Purdue 2014 Performance Measures Guide
Looks at a methodology of using high-resolution data for performance measures for vehicles, non-vehicle, and preemption/priority modes.


Traffic Signal Design

Traffic Signal Design

Connecticut DOT Traffic Control Signal Design Manual
Guidance for considerations involved in the design of traffic control signals in Connecticut.

Manual of Uniform Traffic Control Devices
Defines the standards used to install and maintain traffic control devices on all public streets, highways, bikeways, and private roads open to public travel. The MUTCD is published by the Federal Highway Administration (FHWA) under 23 Code of Federal Regulations (CFR), Part 655, Subpart F.

Traffic Detector Handbook, Third Edition Volume I – FHWA-HRT-06-108

Traffic Detector Handbook, Third Edition Volume II – FHWA-HRT-06-139
A comprehensive reference document to aid in selecting, designing, installing, and maintaining traffic sensors for signalized intersections.

Safety

Signalized Intersections Informational Guide, Second Edition
An introduction to and guide for evaluating the safety, design, and operations of signalized intersections. It also provides tools to deliver better balanced solutions for all users.

FHWA Office of Safety Programs, Proven Safety Countermeasures – Backplates with Retroreflective Borders
Backplates improve the visibility of the illuminated face of the signal by introducing a controlled-contrast background. Taken together with a retroreflective border the signal is made more visible and conspicuous in both daytime and nighttime conditions, which is intended to reduce unintentional red-light running crashes.

Pedestrian and Bicycle Considerations

FHWA Office of Safety Programs, Proven Safety Countermeasures - Pedestrian Hybrid Beacons Volume II – FHWA-HRT-06-139
The pedestrian hybrid beacon (also known as the High intensity Activated crossWalK (or HAWK)) is a pedestrian-activated warning device located on the roadside or on mast arms over midblock pedestrian crossings. This site provides links to many resources.

Pedestrian and Bicycle Information Center – Countermeasure Strategies for Pedestrian Safety Webinar Series
This series will provide participants with an in-depth exploration of some of the most effective countermeasures and design strategies that can be implemented to improve pedestrian safety. Includes webinars on rectangular rapid flashing beacons, pedestrian hybrid beacons, and leading pedestrian interval.


Traffic Signal Maintenance

Traffic Signal Maintenance

Traffic Detector Handbook, Third Edition Volume II – FHWA-HRT-06-139
This volume focuses on installation (Chapter 5) and maintenance (Chapter 6).

CRCOG Traffic Signal Systems Handbook
Contains an appendix dealing with traffic signal operations and maintenance.


Connecticut DOT Resources

Traffic Engineering

Connecticut DOT Traffic Control Signal Design Manual
Guidance for considerations involved in the design of traffic control signals in Connecticut.

Highway Operations

Connecticut Department of Transportation Systems Engineering Form (SEAFORM) for Municipal Traffic Management Systems
Form required when using State and Federal aid for municipal traffic signal projects.

Connecticut Statewide ITS Architecture
The Statewide ITS Architecture represents a shared vision of how each agencies' systems will work together in the future, sharing information and resources to provide a safer, more efficient, and more effective transportation system for travelers in the State.

Connecticut Department of Transportation Statewide Computerized Traffic Signal Systems Needs Assessment

Connecticut Department of Transportation Statewide Computerized Traffic Signal Systems Needs Assessment Appendices

Office of the State Traffic Administration

Local Traffic Authority Guidance
Guidance on who has authority on signing, marking, signals, and various other items.

Traffic Control Signal Application Form
Form required for OSTA approval of the installation, revision, or removal of a local traffic control signal.

      
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