Japan Highway Public Corporation

About: Japan Highway Public Corporation is a based out in . It is known for research contribution in the topics: Bridge (interpersonal) & Wind tunnel. The organization has 142 authors who have published 97 publications receiving 1323 citations. The organization is also known as: Nihon Dōro Kōdan.

Multilane traffic flow dynamics: Some macroscopic considerations

Abstract: The subject of macroscopic modelling and analysis of multilane homodirectional freeway flow is discussed in this paper. Two existing models are extended and treated numerically so that their simplifying assumptions are relaxed. Further, two new formulations are developed; the first is two dimensional with respect to space (i.e. in addition to the street length it includes the street width explicitly) while the second is one dimensional high order dynamic (i.e. it incorporates a momentum equation in order to take into acount acceleration and inertia effects). All modelling alternatives are implemented into a few exemplary situations representing uninterrupted and interrupted flow conditions. Finally, comparisons with aggregate results obtained from microscopic simulation are presented.

Congestion pricing and roadspace rationing: an application to the san francisco bay bridge corridor

Abstract: This paper presents an empirical application of a congestion–alleviation strategy that C. Daganzo [Transportation Research B 29 (1995) 139–154] proposed as a “hybrid between rationing and pricing”. This strategy is applied to the San Francisco Bay Bridge corridor, in search of a practical and Pareto-improving solution to the Bridge's congestion. The work relies on a mode-split model for work trips across four different income groups residing in 459 origin zones, and it applies an equilibrium analysis based on Bridge performance. Results indicate that modal utilities (and thus choices) are sensitive to the specific combination of toll and rationing rate, as well as to the Bridge's travel-time (or performance) function, and the length of the congested section. Though no combination of tolls plus rationing rates was found to benefit all groups of travelers studied, further investigations may improve upon these results by refining some of the assumptions made here.

Saturation Effects on Initial Soil Liquefaction

Abstract: Soil liquefaction has become an important consideration in the design of structures in seismically active regions. Many researchers have in the past attempted to determine the liquefaction potential of soils, but these studies concerned themselves with the liquefaction potential of fully saturated sands. In this paper, the writers establish a general relationship between the pore-pres-sure parameter, B and the initial degree of soil saturation, S o . By introducing the experimental values of B obtained from tests on loose Ottawa sand.