Evaluating the Operational Footprint of Alternative Diamond Interchanges

Sultana, Most Afia; Tarko, Andrew P.; Romero, Mario

doi:10.1061/jtepbs.0000166

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…Based on the previous studies, intersection analysis models generally fall into three categories: simulation models, empirical models, and analytical models. Simulation models are useful in the initial feasibility analysis of new types of intersections which do not have Highway Capacity Manual (HCM) procedures and in comparing them with current intersections [6][7][8][9][10][11][12][13][14]. Empirical models rely on field data to develop relationships between geometric design features and performance measures such as capacity and delay [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

A Novel Methodology for Estimating the Capacity and Level of Service for the New Mega Elliptical Roundabout Intersection

Mohamed

Tan

2020

Journal of Advanced Transportation

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Mega elliptical roundabout is a new intersection on rural multilane highways. This intersection was developed in a previous paper using simulation data, and the authors found that it is better than interchange (full cloverleaf) in most scenarios of traffic flow. Basically, there are no guidelines or procedures for designing mega elliptical roundabout in AASHTO Green Book, Federal Highway Administration guides, and Highway Capacity Manual. Thus, the purpose of this study is to analyze the traffic operation performance and propose a methodology for calculating the capacity of mega elliptical roundabout and also the level of service by gap acceptance theory. Moreover, this research studied the influence of different values of truck ratios and also different values of a major highway speed on geometric design and traffic operation performance for mega elliptical roundabout. To validate the thoroughness of the proposed methodology, VISSIM simulations were conducted. This research will assist practitioners in determining the appropriate geometric design, assessing mega elliptical roundabout intersections, and making comparisons with other alternatives.

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Section: Introductionmentioning

confidence: 99%

A Novel Methodology for Estimating the Capacity and Level of Service for the New Mega Elliptical Roundabout Intersection

Mohamed

Tan

2020

Journal of Advanced Transportation

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Long-distance and daily travel demand: integration of various travel markets and modelling approaches

Llorca

Winkler

Mocanu

et al. 2019

Procedia Computer Science

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Determining optimal suspension system parameters for spring fatigue life using design of experiment

Kong

Abdullah

Schramm

et al. 2019

Mechanics & Industry

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This paper presents the optimization of spring fatigue life associated with suspension system parameters using the design of experiment approach. The effects of suspension parameters on spring fatigue life were analyzed because this process can improve spring fatigue life from a distinct perspective. A quarter car model simulation was performed to obtain the force time histories for fatigue life prediction where the suspension parameters were adjusted. Multiple input regression and interaction plots were conducted to identify the interaction between these parameters. A full factorial experiment was performed to determine the optimal suspension settings that would maximize the spring fatigue life. For the regression, a high R 2 value of 0.9078 was obtained, indicating good fitting. The established regression showed normality and homoscedasticity for consistent prediction outcome. Reducing the spring stiffness and sprung mass while enhancing the damping coefficient is therefore suggested to enhance fatigue life.

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Evaluating the Operational Footprint of Alternative Diamond Interchanges

Cited by 5 publications

References 15 publications

A Novel Methodology for Estimating the Capacity and Level of Service for the New Mega Elliptical Roundabout Intersection

A Novel Methodology for Estimating the Capacity and Level of Service for the New Mega Elliptical Roundabout Intersection

Long-distance and daily travel demand: integration of various travel markets and modelling approaches

Determining optimal suspension system parameters for spring fatigue life using design of experiment

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