Effect of on-ramp demand and flow distribution on capacity at merge bottleneck locations

Asgharzadeh, Mohamadamin; Gubbala, Phani; Kondyli, Alexandra; Schrock, Steven D

doi:10.1080/19427867.2019.1665774

Cited by 9 publications

(3 citation statements)

References 15 publications

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“…However, the omission or shortening of auxiliary lanes does not appear to significantly affect operational efficiency in certain conditions [32]. The detrimental impact of overflow traffic from ramps on the capacity in merging areas has also been established, suggesting a correlation between the number of lanes and capacity bottlenecks [33], [34]. These studies provide important references and inspiration for the design of three-lane ramps.…”

Section: Introductionmentioning

confidence: 79%

Evaluation of Sustainable Design Method for Three-Lane Entrance Ramps on Expressways in Urban Areas: A Case Study of Xi’an, China

Liu,

Pan,

Song

et al. 2023

IEEE Access

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Owing to the challenges faced by two-lane entrance ramps in merging areas on expressways in handling the growing traffic volume, designers are considering implementing three-lane entrance ramps. This approach alleviates capacity bottlenecks and facilitates efficient, safe, and green operations. However, according to the traditional design strategy, the long auxiliary lanes will bring large land occupation and construction consumption, creating obstacles to the reconstruction. To address this issue, this study proposes two new strategies and discusses the applicability of each scheme. A VISSIM microsimulation model was developed and calibrated using the collected data, and five evaluation indicators assessing environmental protection, capacity, traffic efficiency, safety, and construction consumption were selected. This study also presents a comprehensive evaluation(CE) method that combines the CRITIC (Criteria Importance Through Intercriteria Correlation) method and TOPSIS(Technique for Order Preference by Similarity to an Ideal Solution), which considers the association between indicators and offers a more rational evaluation, aiming to recommend optimal designs for various traffic cases. The results indicate that two-lane ramps are still the preferred choice for lower traffic volumes and merging ratios, whereas three-lane ramps demonstrate excellent potential for application under heavy traffic conditions. The CE reveals substantial improvements in optimal designs, with capacity, delay, CO emissions, and conflicts showing maximum enhancements of approximately 20%, 45%, 5%, and 55%, respectively.

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Section: Introductionmentioning

confidence: 79%

Evaluation of Sustainable Design Method for Three-Lane Entrance Ramps on Expressways in Urban Areas: A Case Study of Xi’an, China

Liu,

Pan,

Song

et al. 2023

IEEE Access

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“…Previous studies indicated that the traffic conditions of a highway network were greatly affected by the traffic conditions of several key bottleneck segments [31][32][33]. Consequently, improving the traffic conditions of the bottleneck segments was regarded as a feasible and effective way of enhancing the transportation efficiency of a highway network [34,35].…”

Section: Literature Reviewmentioning

confidence: 99%

A Highway On-Ramp Control Approach Integrating Percolation Bottleneck Analysis and Vehicle Source Identification

Li,

Yang,

et al. 2023

Sustainability

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Identifying the bottleneck segments and developing targeted traffic control strategies can facilitate the mitigation of highway traffic congestion. In this study, we proposed a new method for identifying the bottleneck segment in a large highway network based on the percolation theory. A targeted on-ramp control approach was further developed by identifying the major vehicle sources of the bottleneck segment. We found that the identified bottleneck segment played a crucial role in maintaining the functional connectivity of the highway network in terms of meeting the required level of service. The targeted on-ramp control approach can more effectively enhance the service level of the highway network.

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“…Multivariate linear regression is a tool used to obtain the importance that each independent variable imposes to obtain a predictive model of the dependent variable [87]. Researchers have used regression to evaluate the relationship between drivers' physiological responses, situational factors and takeover request lead time in a simulated driving environment [88], to estimate pavement condition indices as a function of the International Roughness Index (IRI) and the Pavement Condition Index (PCI) [89], to predict annual average daily trac function of road, land use and demographic and socioeconomic characteristics [90,91] and to explore the relationship between on-ramp ow and capacity [92]. In terms of regression models, the most used is linear regression and one of the methods that can be adopted is stepwise.…”

Section: Literature Reviewmentioning

confidence: 99%

Freeway level of service criteria based on travelers perception

Piva¹

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Effect of on-ramp demand and flow distribution on capacity at merge bottleneck locations

Cited by 9 publications

References 15 publications

Evaluation of Sustainable Design Method for Three-Lane Entrance Ramps on Expressways in Urban Areas: A Case Study of Xi’an, China

Evaluation of Sustainable Design Method for Three-Lane Entrance Ramps on Expressways in Urban Areas: A Case Study of Xi’an, China

A Highway On-Ramp Control Approach Integrating Percolation Bottleneck Analysis and Vehicle Source Identification

Freeway level of service criteria based on travelers perception

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