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Relevant bibliographies by topics / Ramp-freeway junctions

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Academic literature on the topic 'Ramp-freeway junctions'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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Journal articles on the topic "Ramp-freeway junctions"

1

Albanese, Marina, Roberto Camus, and Giovanni Longo. "Capacity and Queue Modeling for On-Ramp–Freeway Junctions." Transportation Research Record: Journal of the Transportation Research Board 1852, no. 1 (2003): 256–64. http://dx.doi.org/10.3141/1852-31.

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With reference to the procedure in the Highway Capacity Manual (HCM) 2000 for estimation of measures of effectiveness, a model is proposed to estimate merge-area capacity and to predict traffic dynamics and queue evolution for on-ramp–freeway junctions. The aims of the study are to analyze the behavior of flows within the merge area and to propose a methodology to dynamically estimate the capacity of both ramp and main line according to inflow patterns and to develop a mesoscopic model of merge facilities that allows the prediction of merge-area traffic outflow according to inflow patterns and to estimate traffic queue dynamics. The most relevant finding of the study is a methodology for estimation of the capacity of the merge area referred separately to both the main line and the ramp. The proposed approach could be considered as a link between the HCM hypotheses and those of gap-acceptance theory; the capacity of the competitive streams within the merge area depends on the opposing traffic volumes. The model gives information about traffic flows and queue dynamics (including total delay and maximum queue length). The first results of the application to a case study are briefly discussed, and some further developments are suggested.

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Wang, Yubian, and Ruey Long Cheu. "Safety Impacts of Auxiliary Lanes at Isolated Freeway On-Ramp Junctions." Journal of Transportation Safety & Security 5, no. 4 (2013): 327–43. http://dx.doi.org/10.1080/19439962.2012.761661.

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3

Lagerev, Roman, Denis Kapski, Marija Burinskienė, and Andrius Barauskas. "REDUCING A POSSIBILITY OF TRANSPORT CONGESTION ON FREEWAYS USING RAMP CONTROL MANAGEMENT." Transport 32, no. 3 (2017): 314–20. http://dx.doi.org/10.3846/16484142.2017.1336643.

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Merge junctions are the key elements in the freeway system, as they are likely to function as bottlenecks. Investigations into breakdown occurrence at ramp junctions have demonstrated that when the groups of several vehicles following each other enter the freeway from the ramp, they are expected to create ‘turbulence’ resulting from lane changes, decelerations of vehicles on the mainline and inevitably by the cars merging from the on-ramp. This turbulence can lead to breakdown when the level of mainline demand is adequately high. In other words, the impact of a ramp vehicle on capacity is higher than that of a mainline vehicle, which indicates that a part of vehicles will simultaneously occupy two lanes during the process of changing them thus momentarily decreasing the capacity of the link. This feature becomes particularly important near bottlenecks where it might reduce the already limited throughput. The article introduces the main approaches, methodology, principles and stages of transport demand management on freeways that are aimed at improving the operation quality of transport facilities, including road safety. The technique allows evaluating and optimizing a Ramp-Metering (RM) concept from the viewpoint of minimizing the length of queues on ramps and a possibility of transport congestion. The proposed algorithm estimates the probability of starting congestion formation on the ramp using objective information on traffic conditions in each segment of the highway, which is based on the criterion for vehicle density on the lane. The last chapter shows the examples of traffic flow optimization on Western bypass ramps in Vilnius comparing two strategies for access control management using one or several vehicles per lane. Conclusions, trends and work on future investigations are presented at the end of the article.

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Ci, Yu-sheng, Li-na Wu, Xian-zhang Ling, and Yu-long Pei. "Operation reliability for on-ramp junction of urban freeway." Journal of Central South University of Technology 18, no. 1 (2011): 266–70. http://dx.doi.org/10.1007/s11771-011-0689-3.

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CI, Yusheng, Lina WU, Yulong PEI, and Xianzhang LING. "Gap Acceptance Capacity Model for On-Ramp Junction of Urban Freeway." Journal of Transportation Systems Engineering and Information Technology 9, no. 4 (2009): 116–19. http://dx.doi.org/10.1016/s1570-6672(08)60076-8.

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"A Study on the LOS Analysis of the Ramp-Freeway Junction from a Viewpoint of USHCM 2000." Journal of Korean navigation and port research 26, no. 1 (2002): 95–100. http://dx.doi.org/10.5394/kinpr.2002.26.1.095.

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Dissertations / Theses on the topic "Ramp-freeway junctions"

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Jefferson, Katherine D. "Transportation policies and quality of life an analysis of the socioeconomic effects of implementing Ramp Metering, High Occupancy Vehicle (HOV) Lanes and High Occupancy (HOT) Lanes within an urban transportation network /." Fairfax, VA : George Mason University, 2008. http://hdl.handle.net/1920/3369.

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Thesis (Ph.D.)--George Mason University, 2008.<br>Vita: p. 199. Thesis director: Roger Stough. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Public Policy. Title from PDF t.p. (viewed Mar. 16. 2009). Includes bibliographical references (p. 182-198). Also issued in print.

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2

Chang, Yu-Chin, and 張宇欽. "The Study of the Merging Flow Characteristics in Freeway On-Ramp Junction Area." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/65503758915192216573.

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Tang, Wen-Pin, and 唐文斌. "The Research of Evaluation Approach of Capacity and Level of Service on Freeway off-ramp Junction Area." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/41910524553085241900.

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碩士<br>國立交通大學<br>交通運輸研究所<br>85<br>Abstract The existing method in "The Highway Capacity Manual(HCM) in Taiwan" forthe evaluation of capacity and level of service(LOS) on freeway off-rampjunction is modified from the "Highway Capacity Manual in U.S.A., 1985". Thepractical applicability is limited, due to the difference of trafficcharacteristic between Taiwan and U.S.A.. To improve and enhance theapplicability of the method, this research, making reference to the 1994revised edition of HCM in U.S.A., develops an evaluation approach ofcapacity and LOS on off-ramp junction area, which is more suitable for thetraffic characteristic in Taiwan. The contents and approaches of thisresearch are as following: 1. To collect and analyze traffic flow data and characts., such as volume ,speed,density ect., and develop traffic flow models. 2. To identify the bottleneck on off-ramp junction area, which is considered as the main evaluation location. 3. To analyze the number of main lanes influenced by the behavior of diverging flow on off-ramp junction area. 4. To develop the volume prediction model for the influenced area 5. To develop the traffic flow models for the influenced lanes, which are used to evaluate the capacity. 6. To develop LOS measure of performance models, for the influenced area. 7. To establish the LOS evaluation procedure and method， that fit Taiwan''s traffic flow characteristic on off-ramp junction area. The main conclusions drawn from this study are: 1. The bottleneck on off-ramp junction area is not fixed. The location changes mainly with the diverging traffic volume . 2. Lane 1 and Lane 2 of mainline are the influenced area of freeway off-ramp junction area. This conclusion is same as "HCM in U.S. A.,1994". 3. This study develops a set of traffic flow models for the influenced area, using volume~density~speed (K~Q~U) curve fitting approach, which are used for capacity evaluation.. For 2 or 3-lane freeway segments, the capacity is 4,400 pcph (2,200 pcph for each lane). For 4-lane freeway segments, the capacity is 4,600 pcph(2,300 pcph for each lane). 4. This study chooses density as the major MOE of LOS. Speed and V/C volume as secondary MOE. Density and speed prediction model are developed by use of on-site data, to be used in LOS evaluation. 5. The critical density is found to be around 40 pcu/km/ln, which is a different from the freeway basic segment. Therefore, LOS criteria is different between off-ramp area and basic segment.

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Books on the topic "Ramp-freeway junctions"

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Torbic, Darren J. Design guidance for freeway mainline ramp terminals. Transportation Research Board, 2012.

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National Research Council (U.S.). Transportation Research Board, National Cooperative Highway Research Program, and American Association of State Highway and Transportation Officials, eds. Guidelines for ramp and interchange spacing. Transportation Research Board, 2011.

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Book chapters on the topic "Ramp-freeway junctions"

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Rossi, Riccardo, Massimiliano Gastaldi, and Gregorio Gecchele. "Automatic Incident Detection on Freeway Ramp Junctions. A Fuzzy Logic-Based System Using Loop Detector Data." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-57105-8_18.

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Conference papers on the topic "Ramp-freeway junctions"

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Yu-long, Pei, and Ci Yu-sheng. "Study on Traffic Flow at On-ramp Junctions in Urban Freeway with Cellular Automaton Model." In 2007 International Conference on Management Science and Engineering. IEEE, 2007. http://dx.doi.org/10.1109/icmse.2007.4422174.

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Huang, Jiangbo, Jie Li, Lieqiang Xiong, and Fu Wang. "A Model of Calculating for On-Ramp Junction Capacity of Freeway." In First International Conference on Transportation Engineering. American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40932(246)120.

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