Cross-cutting Issues

ITS Standards development has changed over the past few years requiring a need to update and improve previous ITS Standards Training courses. Several ITS Standards are now available as later version standards and some ITS Standards that have been developed with a Systems Engineering Process (SEP) contain additional content that helps deployers ensure that they can implement a system that is interoperable, interchangeable, and conformant to ITS Standards. Such ITS systems will be able to provide information and services to other systems and use exchanged information and services to operate together effectively. As a result, there is a renewed interest within the ITS community for assistance with procuring and testing when deploying systems implementing ITS Standards. The ITS Standards Program and ITS Professional Capacity Building Program (ITS PCB) are undertaking a project to develop a new set of training materials that emphasize the acquisition, implementation, and testing of ITS Standards.

U.S. DOT

Noblis

Presented at the 18th World Congress on ITS, October 2011, Orlando, Florida

Connected Vehicle and Active Traffic Management (ATM) are the innovative traffic management strategies emphasizing Information Technology (IT)-based intelligent vehicle and infrastructure, advanced control technology, and system integration to address the grand challenges in transportation systems, such as severe congestion, increased risk of traffic incidents, and traffic pollution. Connected Vehicle aims to facilitate better traffic operations through two-way wireless communication of vehicle-to-vehicle and vehicle-to-infrastructure. ATM is an operational approach for optimal performance of highway system through various advanced control strategies. Seamless integration of Connected Vehicle and ATM strategies can generate significant benefits to optimize overall traffic system operations. This paper provides a comprehensive review on the state of the art and the practice of Connected Vehicle and ATM strategies. The study findings are helpful to better understand their fundamental control and operation mechanisms, practical applications, system benefits, and operational challenges.

Authors: Tanveer Hayat, Lily Aung, Gouhui Zhang, C. Michael Walton

Presented at the 18th World Congress on ITS, October 2011, Orlando, Florida

This paper describes the uses of a cooperative control algorithm between on-board vehicle
computers and signal control computers that are connected by low-latency Dedicated Short-
Range Communications (DSRC) wireless into a single control loop. Deployed use cases include
environmental vehicle engine control, Cooperative Intersection Collision Avoidance System -
Violations (CICAS-V), advanced actuated traffic signal control and adaptive traffic signal
control.

Authors: Dave Miller, Brian Collum

Presented at the 18th World Congress on ITS, October 2011, Orlando, Florida

Many “players” have been involved in Intelligent Transportation Systems (ITS) for a long time, beginning in earnest with the USDOT Vehicle Infrastructure Integration (VII) program.  Each player has a vision for their role in the future of ITS.  In recent years, with the declining economy and more conservative investments in technology research, the ITS landscape has changed.  Players have had to adapt, evolve and innovate to stay relevant in the ever-changing ITS puzzle.  This paper presents the story of one such ITS technology evolution.  From the 2008 World Congress demonstration success of a Cooperative Pedestrian Warning System, to a stand-alone prototype Universal Pedestrian Warning System, to a new Infrastructure Basic Safety Message (BSM) Generator in support of vehicle-to-vehicle (V2V) safety applications being showcased at the 2011 World Congress on ITS, the key to success has been adapt, evolve and innovate.

Author: J.R. Richardson

Presented at the 18th World Congress on ITS, October 2011, Orlando, Florida

A request was made by the Florida Department of Transportation (FDOT) District Five to
perform a technical study to evaluate the operation and performance of the Variable Speed Limit (VSL) system. The focus of the study is to determine if the use of VSL’s improve safety
measured by driver compliance, crash rates, and crash types. On September 15, 2008, the  Florida Department of Transportation (FDOT) began using VSL deployed on Interstate 4 (SR 400, I-4) from Rio Grande Avenue (just south of the downtown district) to Maitland Boulevard, SR 414 (north of the downtown district). This 10 mile segment of I-4 is one of the heaviest traveled stretches along the roadway as the annual average daily traffic (AADT) exceeds 200,000 vehicles per day.
Due to these large demands it has been proposed by District Five that this segment of I-4 would benefit from the implantation of the VSL system by reducing speeds, make speeds more uniform across all lanes, and to reduce the number of secondary accidents by slowing drivers down in advance of a stop or reduced speed condition. This report provides conclusions based on data provided by District Five to make an evaluation on performance of the VSL system.
According to the FDOT the Variable Speed Limits along I-4 are used as a traffic management
2 I-4 Variable Speed Limit Performance Analysis 8/23/2011 tool to create optimum speed limits for current traffic conditions. By considering multiple factors, FDOT can decrease or increase I-4 speed limits displayed on digital speed limit signs.

Author: ATKINS

Presented at the 18th World Congress on ITS, October 2011, Orlando, Florida