Results 11 to 20 of about 316,439 (305)
CONSTRUCTING OPTIMAL HIGHWAYS [PDF]
International Journal of Foundations of Computer Science, 2009 For two points p and q in the plane, a straight line h, called a highway, and a real v > 1, we define the travel time (also known as the city distance) from p and q to be the time needed to traverse a quickest path from p to q, where the distance is measured with speed v on h and with speed 1 in the underlying metric elsewhere.
Hee-Kap Ahn +9 more
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Engineering highway hierarchies [PDF]
ACM Journal of Experimental Algorithmics, 2006 Highway hierarchies exploit hierarchical properties inherent in real-world road networks to allow fast and exact point-to-point shortest-path queries. A fast preprocessing routine iteratively performs two steps: First, it removes edges that only appear on shortest paths close to source or target; second, it ...
Sanders, Peter, Schultes, Dominik
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Feasibility of shoulder use for highway work zone optimization
Journal of Traffic and Transportation Engineering (English ed. Online), 2014 Highway maintenance, often requiring lane closure, is very expensive in terms of the costs associated with transportation agencies (i. e. work zone setups) and road users (i. e. delay).
Bo Du, Steven I-Jy Chien
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Geohazards regionalization along highways in Shandong Province, China
Geomatics, Natural Hazards & Risk, 2020 The disturbance of the highway construction to the terrain and the natural environmental factors are the main causes of the geohazards along the highway.
Hongzhi Yang, Yue Zhao, Qianfang Cheng
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Congestion on Multilane Highways [PDF]
SIAM Journal on Applied Mathematics, 2003 Summary: We present a new model for traffic on a multilane freeway (with \(n\) lanes). Our basic descriptors are the car density \(\rho\) (in cars/mile), taken across all lanes in the freeway, and the average car velocity \(u\) (in miles/hour). The flux of cars across all lanes is given by \(\rho u = {\sum^n_{i=1}}\rho_i u_i\), where \(\rho_i\) is the ...
Axel Klar +2 more
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Evaluation of Driver Behavior to Hydroplaning in the State of Florida Using Driving Simulation
CSID Journal of Infrastructure Development, 2019 This project used a driving simulator to investigate patterns of drivers’ behavior during rainfall events using different geometries. We conducted a literature review of previous transportation studies using driving simulators and selected and analyzed ...
Claude Villiers, Dahai Guo
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Numerical Simulations of a VAWT in the Wake of a Moving Car
Energies, 2017 Wind energy generated from the wake of moving cars has a large energy potential that has not yet been utilized. In this study, a vertical axis wind turbine (VAWT) was used to recover energy from the wakes of moving cars.
Wenlong Tian, Zhaoyong Mao, Yukai Li
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Estimating the Bitumen Ratio to be Used in Highway Asphalt Concrete by Machine Learning
The Baltic Journal of Road and Bridge EngineeringHot mix asphalt, which is frequently used in road pavements, contains bitumen in certain proportions. This bitumen ratio varies according to the layers in the road pavements. The bitumen ratio in each pavement is usually estimated by the Marshall design
Muhammed Yasin Çodur +2 more
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Atmosphere, 2022 The post-assessment of highway atmospheric environmental impacts was limited by the traditional air pollution prediction model, which cannot adapt to complex terrain and complex obstacle scenes.
Xiaochun Qin +4 more
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Future TransportationThe differential toll policy has emerged as an effective method for regulating expressway traffic flow and has positively impacted the efficiency of vehicular movement, as well as balanced the spatial and temporal distribution of the road network ...
Xinyu Dong +5 more
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