Commercial Operations

In this paper, the Stackelberg game theory is applied to optimally coordinate ramp
metering and speed control in order to alleviate congestion on urban freeways. Ramp metering can
prevent a traffic breakdown by adjusting the metering rate. Speed control is to regulate and guide the
traffic flow on the mainline of freeway to achieve stable traffic flow. After the interaction between
variable speed and ramp metering is analyzed, we formulate the ramp metering and variable speed
control as a Stackelberg game and variable speed control is regarded as the leader, ramp metering as
the followers. Within this framework, we propose a Stackelberg game model of ramp metering and
variable speed control. At last, we use a simple network to illustrate our approach and the simulation
results show that this approach is effective.

Beijing University Of Technology

Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California

In 2008 Wisconsin Department of Transportation (WisDOT) completed the Traffic Operations Infrastructure Plan (TOIP) study, which identified locations for deployment of ITS devices on a statewide basis. This plan included location, prioritization and cost estimation for the devices themselves, but did not include communications infrastructure to support the deployments.

The Communications Systems Layer (CSL) plan used geo-spatial tools and a rules-based decision making methods to choose from multiple communication options for each site. In addition, the CSL considered connections to a variety of WisDOT centers and partner agencies so that estimates could be created for an overall, statewide plan that provided specific technical recommendations and cost estimates for more than 1,400 individual points representing data users. The initial draft of connections and estimates was completed in only three months, which was only possible through the novel use of data management and analysis tools.

AICP

SRF Consulting Group, Inc.

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

The Pennsylvania Department Transportation (PennDOT) and Federal Highway Administration

(FHWA) leveraged the American Recovery and Reinvestment Act (ARRA) to complete the

intelligent transportation system (ITS) along 51 miles of Interstate 95 in the Commonwealth of

Pennsylvania between the Delaware and New Jersey State lines. The existing ITS along I-95 in

Pennsylvania was aged and provided sporadic coverage of the corridor. PennDOT and FHWA

had plans to complete the ITS coverage along I-95, as well as upgrade the existing ITS, but the

construction funding was tied to reconstruction projects and would have taken over two (2)

decades to complete. Once the legislation was passed, PennDOT and FHWA utilized three (3)

major design-build contracts to complete the work that totaled over $54,000,000, and the design

and major construction was completed for the entire corridor within 18 months.

PennDOT

Federal Highway Administration

Jacobs Engineering Group

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

The Florida Department of Transportation (FDOT) District 6 (southeast Florida including Miami Dade County) is implementing an express lanes project on the major Interstate-95 (I-95) corridor. The purpose of the I-95 Express Lanes (95EL) project is to manage demand to provide a high level of service on the managed lanes (two of five) by varying the toll collected on those two lanes. The 95EL project is a phased development of roadway, infrastructure, and software. This paper describes the SunGuide® Pricing Subsystem (PS) which manages the toll displays, communicates with an external toll calculating application called Express Lanes Manager, provides current toll information to the toll collection software (Patron) and creates a historical record of the tolls set.

Southwest Research Institute

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

World Fiber Technologies, Inc. began construction of Georgia’s initial High Occupancy Toll (HOT) Lane project in September 2010. This project converted 16 miles of the existing High Occupancy Vehicle (HOV) Lanes to HOT Lanes, as well as a 2-mile HOV to HOT Lane conversion on SR 316. This paper discusses the construction challenges faced with this project, including:

Schedule

Traffic Control

Existing Conditions

Conduit Network

Power Service

Structural Design/Fabrication

Structural Installation

Battery Backup System

Signage

World Fiber Technologies

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