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Using Simulation Models To Assess The Impacts Of Highway Work Zone Strategies: Case Studies Along Interstate Highways In Massachusetts And Rhode Island, Kevin D. Moriarty, John Collura, Michael Knodler, Daiheng Ni, Kevin Heaslip
Using Simulation Models To Assess The Impacts Of Highway Work Zone Strategies: Case Studies Along Interstate Highways In Massachusetts And Rhode Island, Kevin D. Moriarty, John Collura, Michael Knodler, Daiheng Ni, Kevin Heaslip
Daiheng Ni
As the National Highway System reaches the end of its serviceable life, it becomes necessary for transportation agencies to focus on the preservation, rehabilitation, and ma intenance of these roads. With significant increases in the amount of work zone activity, transportation officials and contractors are challenged with finding ways to reduce the negative impacts on driver mobility. The key to addressing this challenge is to recognize these impacts well in advance. One major tool used for this purpose is computer simulation. There are many simulation models in existence, some of which are designed specifically for work zone analysis. Examples of …
Modeling And Optimization Of Link Traffic Flow (Paper #08-2129), Kimberly Rudy, Haizhong Wang, Daiheng Ni
Modeling And Optimization Of Link Traffic Flow (Paper #08-2129), Kimberly Rudy, Haizhong Wang, Daiheng Ni
Daiheng Ni
Congestion in networks greatly reduces efficiency and pr oduction. Systems with limited capacities or resources require analysis in order to ensure optimal results, which may be in terms of cost, data transmitted or vehicles discharged. A network is like an interconnected web and if one section or link is not performing optimally, the network may not be operating efficiently. The objective of th is research is to maximize link traffic throughput in the long run to alleviate congestion. The approach is to mode l the changes in link traffic st ates as a discrete Markov chain, from mathematical theory, due …
The Development Of A Dynamic-Interactive-Vehicle Model For Modeling Traffic Beyond A Microscopic Level (Paper #08-3059), Dwayne Henclewood, Daiheng Ni
The Development Of A Dynamic-Interactive-Vehicle Model For Modeling Traffic Beyond A Microscopic Level (Paper #08-3059), Dwayne Henclewood, Daiheng Ni
Daiheng Ni
This research effort is geared towards better representation of vehicle dynamics in traffic simulation. The result will not only lead to improved understanding of traffic dynamics but also provide insight into highway design, traffic safety, more accurate estimates of vehicle emissions, and transportation forensics. The objective of this paper is to propose a simple and computationally affordable dynamic vehicle model that is capable of representing vehicle movement with high fidelity. The objective is accomplished by mathematical representations of a vehicle’s power- train, brake and steering mechanisms while providing a medium through which a driver can interact with these components. The …