Results 11 to 20 of about 2,486 (179)
Free-Gap Evaluation for Two-Lane Rural Highways [PDF]
Transportation Research Record: Journal of the Transportation Research Board, 2011 Studies related to operating speed predicting models' development require vehicles' speed under free-flow conditions to be collected at different sites. Thus, a critical issue is the definition of the gap (or headway) from which the speed of one vehicle is not affected by the speed of the vehicle ahead. In many studies, a 5-s headway was adopted as the
António Lobo +3 more
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Two-Lane Highways Crest Curve Design. The Case Study of Italian Guidelines
Applied Sciences, 2020 The main purpose of the research is to evaluate the crest vertical curves radii Rv, not considering a conventional value of the opposing vehicle height h2, but the average vehicle heights h2(m) and the value of the 15th percentile of the height ...
Marco Guerrieri
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Evaluation of risk factors for road accidents under mixed traffic: Case study on Indian highways
IATSS Research, 2022 This paper presents an evaluation of risk factors for highway crashes under mixed traffic conditions. The basis of selecting study sites was abutting land use, roadway, and traffic characteristics. Accordingly, the study selected thirteen segments on the
Sujata Basu, Pritam Saha
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Traffic Delays Estimation in Two-lane Highway Reconstruction
Procedia Computer Science, 2014 AbstractAn increasingly important issue, as congestion levels increase more and more, is that freeways become subject to rebuilding and restructuring when traffic cannot be re-routed. It has already been asserted that traffic simulation provides a better approach to the analysis of freeway reconstruction than the traditional Highway Capacity Manual. In
Vittorio Astarita +3 more
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Impact of highway geometry and posted speed on operating speed at multi-lane highways in Egypt
Journal of Advanced Research, 2013 The paper presents an analysis of roadway factors and posted speed limits that affect the operating speed at multi-lane highways in Egypt. Field data on multi-lane highways in Egypt are used in this investigation. The analysis considers two categories of
Ahmed M. Semeida
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2 + 1 Highways: Overview and Future Directions
Advances in Civil Engineering, 2018 Most of the rural transportation system is composed of two-lane highways, and many of them serve as the primary means for rural access to urban areas and freeways.
Manuel Romana +2 more
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Determining Free-Flow Speed on Different Classes of Rural Two-Lane Highways
Promet (Zagreb), 2023 Current analytical free-flow speed models consider all rural two-lane highways as the same road type despite their different functional significance in the network.
Nemanja Stepanović +2 more
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Traffic analysis of two-lane highways
Periodica Polytechnica Civil Engineering, 2011 The analysis of huge rows of traffic data collected loop detectors we can get a lot of information about the traffic conditions of different highway sections. These equipments are able to measure the vehicle speed, following time and of course the traffic volume in different vehicle types.
István Fi, János Galuska
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IATSS Research, 2007 The study has four main objectives: (1) to test the correlation between different infrastructure characteristics and crash-rates, and trends; (2) to develop an Infrastructure Coefficient (IC) that represents the overall infrastructure characteristics of ...
Haneen FARAH
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Speed models and criteria for assessing traffic performance on two-lane highways [PDF]
MATEC Web of Conferences, 2019 In the widely used HCM and HBS assessment methods of the traffic performance of two-lane highways speed models are an essential element of the analytical methodology.
Chodur Janusz, Ostrowski Krzysztof
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