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• Maryland Department of Transportation
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• Maryland Transit Authority
• Maryland Toll Authority
• Maryland Aviation Administration
• National Science Foundation
• U.S. Department of Homeland Security
• European Commission of the European Union
• I-95 Corridor Coalition
• Federal Aviation Administration
• U. S. Department of Defense
• U. S. Army Corps of Engineers
• Federal Highway Administration
• National Aeronautics and Space Administration (NASA)
• U.S. Department of Transportation

Featured Projects

Mouse over the table below to pause it. The slideshow begins with a random project each time it is loaded. When it reaches the end of the projects from the point it starts, it reverses quickly and then starts over again from the actual beginning of the project list.

Travel Time Prediction Ocean City Travel Time Prediction System

PI: Gang-Len Chang
Co PI: Sung Yoon Park
Sponsor: SHA

Description: Ocean City, MD is a popular vacation destination. This system monitors two routes (US50, MD90) to Ocean City using 22 detectors to predict and display travel time every minute.

vehicle ownership Modeling Vehicle Ownership Decisions for the State of Maryland

PI: Cinzia Cirillo
Sponsor: Tier 1 University, Transportation Ctr, US Dept of Transportation

Description: This research program proposes to develop a modeling framework for vehicle ownership in the State of Maryland. The modeling system aims to produce the tools needed to understand and predict consumers’ preferences on vehicle ownership, as a function of socio-demographic, economic, transportation system and land development characteristics. This framework can be used to test the outcomes of various future scenarios, including reaction to fuel efficiency, levels of congestion, land use policies, and changing economic conditions.

Economic Impact Study of Intercounty Connector: Logistics and Freight Impact Assessment

PI: H.Mahmassani
Co-PI: Elise Miller-Hooks
Sponsor: Maryland Department of Transportation

Description: The effort assessed the potential logistic and economic impacts on freight movements in Montgomery and Prince George’s counties, as well as surrounding areas that would result from the construction of the proposed Intercounty Connector, or ICC. This effort involved the cooperation of Dr. Larry Bodin. More...

project image Development of the Multimodal Transportation Analysis Framework: Local Roadway Vehicle Miles Traveled and Passenger Rail Data

PI: Lei Zhang
Sponsor: Federal Highway Administration

Description: The proposed Multimodal Transportation Analysis Framework (MTAF) at the U.S. Department of Transportation will provide multimodal interregional origin-destination passenger travel data and enable national-level transportation policy analysis.
More information...

project image Transfer Coordination in Intermodal Freight Transportation Systems

PI: Paul Schonfeld
Sponsor: USDOT through the Center for Integrated Transportation System Management

Description: Freight transportation systems may rely on transfers at major hub terminals such as ports, airports and rail yards to avoid the need for direct routes connecting all origin-destinations pairs and to concentrate cargos on major routes larger, faster and/or more efficient vehicles. If the transfers are well coordinated we can reduce delays and storage requirements in terminals, while achieving other improvements in costs, service quality and environmental impacts. A series of UMD projects in this area developed preplanning and real-time control methods for optimizing the design and operation of such systems.

project Dynamic Decision Making for Less-Than-Truckload Trucking Operations

PI: Ali Haghani
Co-PI: Behrang Hejazi

Description: The research focused on trucking operations of less-than-truckload (LTL) trucking companies. It attempts to use real-time information in decision making for LTL carriers in the dynamic environment.
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passenger demand Passenger Demand Model for Railway Revenue Management

PI: Cinzia Cirillo
Sponsor: Mid-Atlantic University, Transportation Ctr,
US Dept of Transportation

Description: In this research project we propose to incorporate customer choice behavior in the context of revenue management (RM) for railway industry. In order to estimate passenger demand model we use real booking data for Acela Express, which is the Amtrak high speed rail service that operates along the Northeast Corridor between Washington, D.C. and Boston. The advance booking model estimated is then used to formulate a fare optimization problem.

Concurrent Flow Lanes: Phase 3

PI: Elise Miller-Hooks
Sponsor: Maryland State Highway Administration

Description: Modeling techniques and results from prior calibration and other efforts will be directly applied in creating a set of simulation models (including existing conditions and alternative designs) of all of I-270, including portions of I-495 in both Maryland and Virginia. More...

project image Comprehensive highway corridor planning with sustainability indicators

PI: Lei Zhang
Sponsor: Maryland State Highway Administration

Description: This proposed research project has three main objectives: 1. Define sustainability indicators that are relevant to multimodal highway improvement projects/programs. 2. Develop a high-level planning Model Of Sustainability And Integrated Corridors MOSAIC) that helps the State Highway Administration integrate the identified sustainability indicators into the long-range transportation planning process.
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project image Analysis Methods for Inland Waterway Transportation

PI: Paul Schonfeld
Sponsor: U.S. Army Corps of Engineers, U.S. Dept. of Agriculture; U.S. Geological Survey through the Maryland Water Resources Research Center

Description: In a long series of projects (almost continuously from 1987 to the present) various methods for analyzing inland waterways have been developed at UMD. These started with queuing methods for analyzing delays at waterway locks and extended into very detailed simulation and optimization models for analyzing various aspects of waterways. These include methods for evaluating capital and operational improvements, demand analysis, reliability analysis, investment planning and scheduling, maintenance scheduling, and detailed control of lock operations.

Speed Limit Control Variable Speed Limit Control System

PI: Gang-Len Chang
Co PI: Sung Yoon Park
Sponsor: SHA

Description: Variable speed limits can improve traffic safety by accommodating dynamic traffic conditions, mitigating traffic congestion; and lowering the negative impact of inclement weather (fog, snow, ice etc).

Resilience of Freight Transportation Networks

PI: Elise Miller-Hooks
Sponsor: Tier 1 University, Transportation Ctr, US Dept of Transportation

Description: This research effort will result in mathematical tools (i.e. a stochastic, integer program and methodology for its solution) that will explicitly recognize that post-disaster performance of transportation networks depends not only on the inherent capability of the system to absorb externally induced changes, but also on the actions that can be taken in the immediate aftermath of the disaster to restore system performance. More...

project image Feasibility and Benefit of Advanced Four-Step and Activity-Based Travel Demand Models for Maryland

PI: Lei Zhang
Co-PI: Cinzia Cirillo
Sponsor: Maryland State Highway Administration

Description: This project has four main objectives: 1. Summarize current and emerging planning and policy issues in Maryland that the Maryland Statewide Transportation Model (MSTM) needs to address and identify the types of improvements to MSTM that would improve its ability to address these issues. 2. Review advanced four-step and tour-/activity-based travel models in other States and MPOs, synthesize their data requirements and applications.
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project image Evaluation and Optimization of Highway Alignments

PI: Paul Schonfeld
Sponsor: National Science Foundation, Maryland State Highway Administration

Description: In this series of projects methods have been developed for comprehensively evaluating candidate highway alignments by automatically processing data from geographic information systems (GIS's) and then optimizing 3-dimensional alignments using artificial intelligence (AI) heuristics. Factors considered in great detail for a road’s life cycle include land availability and cost, earthwork , operation and maintenance costs, environmental impacts, safety, and user time value. The combinations of objectives and constraints applied in optimizing alignments are essentially unrestricted. When existing roads are crossed the models can optimize several types of interfaces (conventional intersection, roundabout, diamond interchange, etc.) and automatically select the preferred one.

project Existing Right-of-way Plats Database GIS Applications

PI: Ali Haghani

Description: The objective of this research project was to develop a prototype automated computerized system to perform queries on an existing right-of-way plat database for Office of Real Estate at Maryland State Highway Administration.
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Emergency Evacuation System An Integrated Multi-Modal Emergency Evacuation System for the Baltimore Metropolitan Area

PI: Gang-Len Chang
Co PI: Xin Zhang, Hong Zheng, Zun Wang
Sponsor: Department of Homeland Security

Description: The system, named Baltimore Multimode Evacuation System (BMES), includes the entire Baltimore metropolitan area. Passenger cars, pedestrians, and public transit system are mobilized to evacuate in the system in a simulated emergency situation.

Feasibility and Benefit of an Activity-Based Travel Demand Model for Maryland: An Exploratory Analysis

PI: Cinzia Cirillo
Sponsor: Maryland State Highway Administration

Description: The activity-based approach for travel demand forecasting, which first emerged as an academic idea in the late 1960s, recognizes that travel demand is derived from individuals’ and businesses’ needs to participate in spatially-dispersed activities. The project intends to summarize current and emerging planning and policy issues in Maryland and identify the most cost-effective approach to improving the current statewide model based on SHA’s planning needs.

Network Design of Vehicle Sharing Systems

PI: Elise Miller-Hooks
Sponsor: Mid-Atlantic University, Transportation Ctr, US Dept of Transportation

Description: This research effort seeks to develop a network modeling framework to support quantitative assessment and design of vehicle sharing systems based on probabilistic information on demand, modal preferences, and the existing transit system configuration. A detailed representation of demand and supply processes and their interaction will be developed. More...

project image Development of 'what if' scenario models and 'seed value' data for the FHWA multimodal passenger travel modeling program

PI: Lei Zhang
Co-PI: Qing Shen
Sponsor: Maryland State Highway Administration

Description: This project will: 1. Establish mathematical formulas and analytical models linking both passenger vehicle miles travelled/VMT growth rate and truck miles travelled/VMT growth rate to air quality nonattainment destinations by US EPA; 2. Establish mathematical formulas and analytical models linking both passenger vehicle miles travelled/VMT growth rate and truck miles travelled/VMT growth rate to various land use policies.
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project image Routing Algorithms for Robotic Vehicles

PI: Paul Schonfeld
Sponsor: U.S. Dept. of Defense

Description: In this project conducted jointly with Morgan State University and Virginia Tech methods are being developed for evaluating and optimizing the movements of autonomous vehicles engaged in search, rescue, supply and other military missions. Heuristic algorithms developed to date optimize the paths and speeds of vehicles while considering the terrain, vehicles performance characteristics and various hazards that are tracked in a geographic information system (GIS). A capability to simulate the interactions of multiple robotic vehicles on opposing teams is being developed. The developed simulation model may eventually be used to evaluate the characteristics of various types of vehicles, sensors and control policies.

project Optimal Scheduling of Evacuation Operations

PI: Ali Haghani
Co-P.I.: Abbas M. Afshar

Description: An optimization model for Emergency Evacuation Planning is proposed in this research along with a simulation-optimization framework to solve for the system optimal evacuation plan. The model simultaneously solves for the choice of destination, evacuation route, and departure time for all evacuees from given origins.
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Resilience in Rail-Based Intermodal Transportation Systems: Performance Measurement and Decision Support

PI: Elise Miller-Hooks
Sponsor: National Science Foundation

Description: This research effort recognizes that the post-disaster performance of transportation networks depends not only on the inherent capability of the system to absorb externally induced changes, but also on the actions that can be taken in the immediate aftermath of the disaster to preserve or restore system performance. More...

project image An integrated economic, land use, and network growth model for transportation management and policy analysis

PI: Lei Zhang
Sponsor:U.S. DOT University Transportation Center Program: MAUTC

Description: This project will develop an Economic, Land Use and Transportation Network Growth (ELUNG) model for the Washington D.C. Area, and demonstrate the feasibility of incorporating transportation investment and joint equilibrium-evolutionary analysis in integrated urban systems modeling. More information...

project image Integration of Fixed and Flexible-Route Public Transportation Services

PI: Paul Schonfeld
Sponsor: USDOT through the Mid-Atlantic Universities Transportation Center

Description: This project explores possible synergies and opportunities for better integrating conventional transit services (having fixed routes and schedules) with paratransit services such as Dial-A-Ride. In particular, we consider how the excess capacity of conventional systems during off-peak periods might be transformed into higher-quality paratransit service by shifting vehicles and drivers among these service types. We also consider how off-peak service improvements might reduce peak demand. Optimization models are being developed for shifting resources among service types in response to changes as well as for using paratransit services as feeders to conventional bus and rail transit services.

project image Developing a research roadmap and strategies for multimodal inter-regional passenger travel demand analysis

PI: Lei Zhang
Sponsor: Federal Highway Administration

Description: Within the scope of this project, the UMD research team will: 1. Identify and summarize current practices, in both the US and abroad, in integrating highway, rail, and air traffic models into a single multimodal modeling approach. Discuss how trip generation and distribution estimates, which each mode-specific model computes, are intergraded. Also, discuss whether/how mode-specific estimates are made consistent and account for estimates of travel on other modes. More information...

Paratransit Service Provider Parity: Definition, Measurement and Monitoring

PI: H.Mahmassani
Co-PI: Elise Miller-Hooks
Sponsor: Maryland Transit Authority via State Highway Administration

Description: This project addressed the issue of parity “of contractual burdens and undertakings” among service providers in the delivery of paratransit service by the Maryland Transit Administration (MTA) in the Baltimore area. More...

project image Integrated Management of Maintenance and Traffic

PI: Paul Schonfeld
Sponsor: Maryland State Highway Administration

Description: In a series of studies conducted since 1991 researchers at the Univ. of Maryland have developed methods for planning and scheduling highway repaving operations in ways that minimize the costs of motorist delays and accidents along with the costs of road resurfacing. These methods can optimize decisions such as (1)how often various roads should repaved; (2)what the pavement quality or durability level should be in various locations; (3)how road networks should be subdivided into work zones; (4)how many lanes should be closed at what times; (5)how long the work zones should be; (6)how much of the work should be done at night or during off-peak periods; (7)should auxiliary lanes be closed off to assist repaving operations; (8)in what situations do the savings to motorists justify the additional costs of speeding up the work; and more.

project image Effectiveness and equity of future transportation financing options at the federal and state levels

PI: Lei Zhang
Sponsor: U.S. DOT UTC Program: CITSM

Description: While the nation as a whole and many states engage in the debate of sustainable transportation financing options, answers to the following questions will provide critically important input to this debate and help decision-makers forge effective and equitable financing policies: 1. What is the true revenue-generating potential of alternative policy portfolios (higher gas tax, vehicle mileage fee, green transportation taxes, congestion pricing, etc.)?
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Tools to Support GHG Emissions Reduction: A Regional Effort (MAUTC)

PI: Elise Miller-Hooks
Co-PI: Rakha, (Cirillo on UMD portion) Sponsor: United States Department of Transportation

Description: The transportation sector plays a significant role in GHG production. This regional effort, involving researchers from the University of Maryland and Virginia Tech and cost-shared from Maryland State Highway Administration (SHA), MAUTC and NAVTEQ, will seek to develop: 1.Energy and emission models for new vehicle technologies including hybrid and low emitting vehicles, 2.Routing strategies that incorporate energy and environmental impacts, 3.A prototype system to display vehicle fuel consumption in real-time, 4.Tools for estimating the carbon footprint of major activities undertaken by or on behalf of such transportation agencies as the Maryland State Highway Administration (SHA) of the Maryland Department of Transportation or Virginia Department of Transportation (VDOT)... More...

project image Development of the FAA Strategic Simulator

PI: Paul Schonfeld
Sponsor: Federal Aviation Administration through the National Center of Excellence for Aviation Operations Research (NEXTOR)

Description: A team of researchers from the Univ. of Maryland, the Univ. of California at Berkeley, the Massachusetts Institute of Technology, Virginia Tech University and George Mason University along with the private companies Ventana and LMI has worked to develop a macroscopic but very comprehensive model of the U. S. aviation system intended for analyzing a great variety of policies operational issues. This Strategic Simulator model is based on a System Dynamics framework. The group of students directed by Dr. Schonfeld worked on estimating various relations and developing several model components, including some for airport capacity and delays, for enroute airspace capacity and delays, for air traffic controller requirements and for organizing the airspace into controllable sectors.

project image An agent-based model of transit investment and transit network evolution

PI: Lei Zhang
Sponsor: UMD General Research Board

Description: This project will develop an agent-based simulation model of transit network evolution over time that explicitly considers the continuous feedback between transit investment and transit demand. The transit network itself changes over time as investment decisions are endogenous. This model will allow analysts to study the effectiveness of current and alternative transit investment strategies, as they are repetitively implemented on a transit network over a long period of time.
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Analysis and Design of Vehicle Sharing Programs

PI: Elise Miller-Hooks PI on subaward and main contract
Sponsor: United States Department of Transportation

Description: Strategies to better manage fleets under demand uncertainty were developed in this research effort. These strategies involve anticipative fleet redistribution that operators initiate to correct short-term demand asymmetry (since flow from one station to another is seldom equal to flow in the opposite direction). When these strategies were tested on the Singapore car sharing program, the system operated at higher reliability levels and serviced more demand than would be possible without capital improvements to the system. More...

project image Container Handling and Storage in Ports

PI: Paul Schonfeld
Sponsor: Maryland Port Administration; U. S. Dept. of Transportation through the Center for Intermodal Freight Transportation

Description: In two projects UMD researchers developed methods for analyzing the processing and storage of containers in ports. Queuing and optimization methods were used for jointly analyzing decisions such as (1) the number and characteristics of berths provided; (2) the numbers of workers, cranes and other yard equipment that should unload and load various ships; (3) the schedules and procedures for loading unloading; and (4) the management of storage facilities and assignment of containers to them in ways that minimize handling and storage costs. Some of the methods developed for optimizing container storage in ports have been extended to parking management at airports.

project image Multimodal multi-jurisdictional transportation investment decision-making

PI: Lei Zhang
Sponsor: U.S. DOT UTC Program: MAUTC

Description: Transportation pricing and investment decisions are often made by multiple decision agents in a region (e.g. State Departments of Transportation, Metropolitan Planning Organizations, Transit and other modal agencies, Local government agencies). In other words, transportation supply decisions are made by multiple agents often pursuing self-interests, which often result in efficiency loss in the transportation system. This is defined as the Multi-Agent Transportation Supply (MATS) problem.
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Modeling Violations in High-Occupancy Toll Lane Studies

PI: Elise Miller-Hooks PI on subaward (co-PI on main contract)
Sponsor: Maryland State Highway Administration

Description: In this study, the potential impact of violations related to HOT lane access and vehicle occupancy on traffic performance in managed and GP lanes was quantified for an existing roadway segment with single HOV lane and proposed HOT lane facility conversion. Techniques were developed for modeling violation behavior in concurrent flow lane operations within a widely used microscopic traffic simulation tool. The significance of the violation impact on traffic performance for future managed flow lane facility performance and benefit analyses was assessed in extensive and systematically designed experiments. More...

UAID Unconventional Arterial Intersection Design (UAID)

PI: Gang-Len Chang
Co PI: Yang Lu, Xianfeng Yang
Sponsor: SHA

Description: UAID stands for Unconventional Arterial Intersection Design whose aim is to improve the intersection performance by using innovative geometric designs.

project image No More Freeways: Urban Land Use-Transportation-Environment Dynamics without Freeway Capacity Expansion

PI: Lei Zhang
Sponsor: U.S. DOT University Transportation Center Program: OTREC

Description: The interaction between land use and transportation has long been the central issue in urban and regional planning. Models of such interactions provide vital information to support many public policy decisions, such as land supply, infrastructure provision, and growth management. This project examines the land use-transportation interaction from an evolutionary perspective—
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Quantifying the Cost Effectiveness of Freeway Service Patrol Programs

PI: Elise Miller-Hooks
Sponsor: Maryland State Highway Administration

Description: Freeway service patrols (FSPs) are continuously roving vehicles whose purpose is to quickly respond to incidents and to provide necessary assistance to drivers of disabled vehicles or vehicles involved in a collision. The goal of most FSP programs is to mitigate the impact of traffic incidents on traffic flow along these freeway segments. An FSP program, the Highway Emergency Local Patrol (H.E.L.P.) program, exists in the Lower Hudson Valley region of New York. This study considered the operations of service patrol vehicles belonging to the H.E.L.P. program along a portion of the I-95 Corridor. The primary goal of this study was to quantify the benefits of the H.E.L.P. program in terms of resulting reduction in congestion, secondary incidents, fuel consumption, and related environmental impact of congestion. More...

project Container Ship Stowage Planning with Quay Crane Utilization

PI: Ali Haghani
Co-PI: Masoud Hamedi

Description: This research deals with the containership stowage planning problem which is the problem of stacking containers on different bays of a containership that visits several ports during a voyage. The proposed optimization framework takes into account the stability of the vessel, operational constraints and utilization of quay carnes.
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Flexibility: An Indicator of Recovery Capability in Intermodal Freight Transport

PI: H.Mahmassani
Investigator: Elise Miller-Hooks
Sponsor: Center for Intermodal Freight Transportation

Description: This research effort proposed a new index for assessing vulnerability of the freight transport network from the perspective of recovery operations. Such indices will measure the ability of the network to adapt to changing circumstances (such as a disaster) and return to its normal state of operation post-disaster. A methodological framework and specific computational steps for computing this measure was developed. More...

project image Co-Evolution of Land Use and Transportation in Urban and Regional Systems

PI: Lei Zhang
Sponsor: U.S. DOT University Transportation Center Program: OTREC

Description: The interaction between land use and transportation has long been the central issue in urban and regional planning. Models of such interactions provide vital information to support many public policy decisions, such as land supply, infrastructure provision, and growth management. This project examines the land use-transportation interaction from an evolutionary perspective More information...

REORIENT: Implementing Change in the European Railway System

PI: Elise Miller-Hooks
Co-PI: H.Mahmassani
Sponsor: Institute for Transport Economics in Oslo, Norway

Description: REORIENT was a Concerted Action funded by the European Commission within the Sixth Framework Programme that addressed Strategic Objective 3.3.1 'Research to Support the European Transport Policy, Research Domain 3.1, Implementation of Change in the European Railway Area'. The REORIENT project examined the effects of the EU's legislation on rail interoperability, which is transforming the European rail freight industry from closed, monopolistic, nationally-oriented businesses insulated from market realities such that new players and newcomers both from the rail and logistics industry can find new opportunities, and from nationally-fragmented railway subsystems into an internationally integrated and interoperable pan-European system. More...

project Estimating Drivers’ Willingness to Pay for HOT Lanes on I-495 in Maryland

PI: Cinzia Cirillo
Sponsor: Tier 1 University, Transportation Ctr, US Dept of Transportation

Description: This project proposes to investigate the acceptability of HOT lanes and the willingness to pay for their use from the traveler perspective. In particular, we aim at formulating a model system that simulates individual behavior in response to HOT lanes on I-495 in Maryland. The project will utilize state-of-art and advanced discrete choice models to calculate the number of riders that will be willing to pay to use HOT lanes, the distribution of the willingness to pay and the main factors affecting their choices.

Improving Traffic Signal Timing for Evacuation

PI: Elise Miller-Hooks
Sponsor: Federal Highway Administration via State Highway Administration

Description: This study assessed the changes needed to signal timing to facilitate evacuation and response to a disaster in an urban area, and provided technical guidance to assist state and local transportation agencies in developing appropriate signal timing plans. More...

project image Welfare and Equity Impacts of Public and Private Toll Roads

PI: Lei Zhang
Sponsor: Kiewit Center for Transportation & Infrastructure

Description: With an increasing number of private toll road projects constructed or proposed in the U.S. through various forms of public private partnerships, and with more states removing legal constraints on the entry of private roads into the existing public road system, there are imperative needs to analyze the welfare and financial implications of utilizing private sector capitals in road financing for both public policy decisions and private investment decisions.
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project image Fighting Airport Congestion: Modeling Airline and Passenger Responses to Aviation Congestion Management

PI: Lei Zhang
Sponsor: UMD Minta Martin Research Fund

Description:The objective of this research is to develop an agent-based simulation model to analyze the impact of congestion management strategies at a congested airport on airline operations, neighboring airports, passenger choices, and social welfare. This modeling tool should have the following capabilities: 1. Provide information to airports, airlines, and regulators on the impact of airport congestion management;
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Tools to Support GHG Emissions Reduction: A Regional Effort (SHA)

PI: Elise Miller-Hooks
Co-PI: Cirillo
Sponsor: Maryland State Highway Administration

Description: The transportation sector plays a significant role in GHG production. Agencies, such as state departments of transportation, command very large fleets of vehicles, including, for example, fleets of snow plows and gritting trucks, and manage enormous construction projects involving heavy equipment. The objectives of this research effort are to: 1.identify and/or develop tools for estimating the carbon footprint of major activities undertaken by or on behalf of such transportation agencies, with a particular focus on the activities of SHA, and 2.formulate potential strategies for reducing GHG emissions within the major construction and fleet management activities conducted under the auspices of such agencies. More...

 

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