SelectedWorks - Daiheng Ni

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Selected Works of Daiheng Ni

Associate Professor, Department of Civil and Environmental Engineering

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About Daiheng Ni

Present	Associate Professor, Department of Civil and Environmental Engineering, University of Massachusetts Amherst
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Civil and Environmental Engineering

Traffic Flow Modeling and Simulation, Intelligent Transportation Systems, Traffic Sensing and Information Technology, and Transportation Logistics and Optimization

219 Marston Hall
College of Engineering
Department of Civil and Environmental Engineering
130 Natural Resources Road
University of Massachusetts
Amherst, Ma 01003
413-545-5408

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A unified perspective on traffic flow theory. Part I: The ...

Applied Mathematical Sciences (2013)

Over more than half a century, traffic flow theorists have been pursuing two goals: (1) simple and efficient models to ...

A unified perspective on traffic flow theory. Part II: The ...

Applied Mathematical Sciences (2013)

Over more than half a century, traffic flow theorists have been pursuing two goals: (1) simple and efficient models to ...

A unified perspective on traffic flow theory. Part III: Validation ...

Applied Mathematical Sciences (2013)

Daiheng Ni and Haizhong Wang

Over more than half a century, traffic flow theorists have been pursuing two goals: (1) simple and efficient models to ...

Cyber-Physical Integration to Connect Vehicles for Transformed Transportation Safety and ...

The 25th International Conference on Industrial, Engineering & Other Applications of Applied Intelligent Systems (2012)

Daiheng Ni, Hong Liu Liu, Wei Ding, Yuanchang Xie, et al.

In this paper, we explore a distributed cyber-physical solution using connected vehicle technology (CVtech) to substantially mitigate transportation systems' safety ...

Driver Dynamics and the Longitudinal Control Model (Paper # 12-0235)

The 91st Transportation Research Board (TRB) Annual Meeting (2012)

Gabriel Leiner, Chaoqun Jia, Daiheng Ni and John D. Leonard

Driver psychology is one of the most difficult phenomena to model in the realm of traffic flow theory because mathematics ...

Driver Traffic Speed Variance Modeling with Application in Travel Time ...

The 91st Transportation Research Board (TRB) Annual Meeting (2012)

Haizhong Wang, Zhixia Li, David S. Hurwitz and Daiheng Ni

Traffic speed variance is defined as a measure of the dispersion of space mean speeds among drivers. Empirical speed-density observations ...

Vehicle Longitudinal Control and Traffic Stream Modeling (Paper # 12-0156)

The 91st Transportation Research Board (TRB) Annual Meeting (2012)

Daiheng Ni, John D. Leonard, Gabriel Leiner and Chaoqun Jia

A simple yet efficient traffic flow model, in particular one that describes vehicle longitudinal operational control and further characterizes traffic ...

A Methodology to Estimate Capacity Impact due to Connected Vehicle ...

International Journal of Vehicular Technology (2011)

Daiheng Ni, Jia Li, Steven Andrews and Haizhong Wang

Recent development in connected vehicle technology or equivalently vehicular ad hoc networks (VANET) has stimulated tremendous interests among decision makers, ...

Multiscale Modeling of Traffic Flow

Mathematica Aeterna (2011)

This paper presents a broad perspective on traffic flow modeling at a spectrum of four scales. Modeling objective and model ...

The Effect of IntelliDrive on the Efficiency of Highway Transportation ...

International Journal of Vehicular Technology (2010)

Mohammad Nekoui, Hossein Pishro-Nik and Daiheng Ni

Recently, the IntelliDrive initiative has been proposed by the US Department of Transportation (USDOT) to enhance on-road safety and efficiency. ...

A Spectrum of Traffic Flow Modeling at Multiple Scales

Winter Simulation Conference (2010)

his paper presents a broad perspective on traffic flow modeling at a spectrum of four scales. Modeling objectives and model ...

Preliminary Estimate of Highway Capacity Benefit Attainable with IntelliDrive Technologies

The 13th International IEEE Conference on Intelligent Transportation Systems (2010)

Daiheng Ni, Jia Li, Steven Andrews and Haizhong Wang

Recent development in IntelliDrive and associated Vehicular Ad Hoc Networks (VANET) has stimulated tremendous interests among decision-makers, practitioners, and researchers ...

Representing the Fundamental Diagram: the Pursuit of Mathematical Elegance and ...

Transportation Research Board (TRB) Annual Meeting (2010)

Haizhong Wang, Jia Li, Qian-Yong Chen and Daiheng Ni

The fundamental diagram, as the graphical representation of the relationships among traffic flow, speed, and density, has been the foundation ...

Scenario-based Analysis of Transportation Impacts in Case of Dam Failure ...

The 89th Transportation Research Board (TRB) Annual Meeting (2010)

Haizhong Wang, Steven Andrews, John Collura and Daiheng Ni

Emergency planning is an important practice that allows government officials and planners to prepare for disasters and to make prompt ...

Analysis of LWR Model with Fundamental Diagram Subject to Uncertainties ...

The 88th Transportation Research Board (TRB) Annual Meeting (2009)

Jia Li, Qian-Yong Chen, Haizhong Wang and Daiheng Ni

The LWR model is of interest since it can successfully reproduce some essential features of traffic flow, such as the ...

Speed-Density Relationship: from Deterministic to Stochastic (Paper # 09-1527)

The 88th Transportation Research Board (TRB) Annual Meeting (2009)

Haizhong Wang, Jia Li, Qian-Yong Chen and Daiheng Ni

Traffic flow is a many-car system with complex and stochastic movement. It is difficult to describe the system dynamics solely ...

Modeling and Optimization of Link Traffic Flow (Paper #08-2129)

The 87th Transportation Research Board (TRB) Annual Meeting (2008)

Kimberly Rudy, Haizhong Wang and Daiheng Ni

Congestion in networks greatly reduces efficiency and pr oduction. Systems with limited capacities or resources require analysis in order to ...

The Development of a Dynamic-Interactive-Vehicle Model for Modeling Traffic beyond ...

The 87th Transportation Research Board (TRB) Annual Meeting (2008)

Dwayne Henclewood and Daiheng Ni

This research effort is geared towards better representation of vehicle dynamics in traffic simulation. The result will not only lead ...

Using Simulation Models to Assess the Impacts of Highway Work ...

The 87th Transportation Research Board (TRB) Annual Meeting (2008)

Kevin D. Moriarty, John Collura, Michael Knodler, Daiheng Ni, et al.

As the National Highway System reaches the end of its serviceable life, it becomes necessary for transportation agencies to focus ...

Delay and Energy Tradeoff in Multi-state Wireless Sensor Networks

IEEE Global Telecommunications Conference (2007)

W. L. Leow, H. Pishro-Nik and Daiheng Ni

This paper discusses a first attempt to investigate, using analytic means, the transmission delay and energy char- acteristics of a ...

Development of a Prototype Intersection Collision Avoidance System under VII

Proceedings of the 14th World Congress on Intelligent Transport Systems (2007)

Daiheng Ni, Hossein Pishro-Nik, Richa Prasad, Mohammed Raza Kanjee, et al.

Vehicle collisions at in tersections account for a large percen tage of overall traffic accidents, a good portion of which ...

Forty-Fifth Annual Allerton Conference on Communication, Control, and Computing

Allerton House (2007)

H. Pishro-Nik, A. Ganz and Daiheng Ni

This paper initiates the study of scaling laws for vehicular ad hoc networks (VANET)s. It provides a general framework to ...

Modeling Traffic Flow under Emergency Evacuation Situations: Current Practice and ...

The 86th TRB Annual Meeting (2007)

Kevin D. Moriarty, Daiheng Ni and John Collura

The use of evacuation operations in response to emergency conditions has become commonplace. Until recently, planning and response operations have ...

A Framework for new Generation Transportation Simulation

Winter Simulation Conference (WSC) (2006)

This paper discussed the evolution and future trend of simulation in general domain and in transportation. Some challenges facing transportation ...

Direct Methods of Determining Traffic Stream Characteristics by Definition

The 85th TRB Annual Meeting (2006)

John D. Leonard and Daiheng Ni

There are generally two approaches to derive traffic stream characteristic s (i.e. flow, space mean speed, and density): indirect approach ...