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Communication Systems Analysis for Signal Phase and Timing (SPaT) Applications – Phase I

Project Information

Project ID: 
Project Status: 
Start Date: 
Wednesday, December 1, 2010
End Date: 
Friday, September 30, 2011
FHWA Program: 
FHWA Subprogram: 
Transportation Systems Management and Operations
TRT Terms: 
Telecommunications; Operations; Research; Dedicated Short Range Communications; Wireless Communication Systems; Traffic Signal Phases; Traffic Signal Timing
FHWA Discipline: 
Subject Area: 
Construction, Data and Information Technology, Freight Transportation, Energy, Highways, Motor Carriers, Pedestrians and Bicyclists, Public Transportation, Railroads, Safety and Human Factors, Security and Emergencies, Transportation (General), Vehicles and Equipment

Contact Information

First Name: 
(202) 493-3045
Email Address: 
Transportation Enabling Technologies Team
Office of Operations Research and Development
Office Code: 

Project Details

Project Description: 

This project will develop requirements for telecommunication systems, then use a combination of wireless technologies (Dedicated Short Range Communication (DSRC), private systems such as local Wireless Fidelity (WiFi), and commercial services such as Third Generation (3G)/Fourth Generation (4G) cellular data, Worldwide Interoperability for Microwave Access (WiMAX), Long Term Evolution (LTE), Frequency Modulation (FM) radio, satellite radio, and other emerging services) to meet those requirements. The output will be a report that outlines several proposed approaches to addressing the telecommunication needs for signal phase and timing (SPaT) applications.


The key project objectives are:

(1) Identify safety and mobility applications that will use signal phase and timing (SPaT) data.

(2) Establish well-documented wireless requirements for those applications with the approval of stakeholders.

(3) Identify the existing and emerging communications technologies and commercial services that could have applicability.

(4) Provide a mapping of existing and emerging wireless communications technologies to the identified applications.

(5) Evaluate the ability of the different wireless technologies to provide the level of performance for the safety and mobility applications that use signal phase and timing (SPaT) data.

(6) Identify and evaluate the operations and maintenance needs and challenges associated with utilization of the different communications technologies and services, including in a mixed environment.