T he Florida Department of Transportation (FDOT) hired a consultant team to perform analysis of various grade separation concepts. This work was part of a project to determine the feasibility of using grade separation techniques to solve arterial/arterial intersection capacity deficiencies. A significant portion of this exercise was aimed at determining the relative traffic carrying capabilitie...

77 THIS FEATURE PRESENTS A RELAtively unique concept for urban arterial highway interchanges. The interchange has been named the Echelon Interchange because of its symmetrical, but offset, pair of two-phase one-way pair intersections—one elevated over the other. An observer1 noted that the interchange resembled a flying formation used by the U.S. Navy Flight Demonstration Team, the “Blue Angels...

Traffic problems are the most prominent urban dilemmas, especially during recent years, since the capacity of old traffic arteries don’t meet the increasing volume of population and vehicles, therefore, adopting some measures in order to enhance the capacity of existing roads has been placed on the agenda of urban managers. Changing the existing intersections to over changes is one of these met...

The transport interchange hubs development (TIH) has recently become an important urban issue. In our country, this problem being quite new is determined by planning approaches aimed at solving it. hub includes a complex of several modes performing operations for servicing transit, local and transportation goods passengers.

Signalized diamond interchanges are one of the most common interchange types in U.S. urban areas. Special signal control strategies have been developed in the past for diamond interchanges to address the unique traffic flow and geometric characteristics such as tight spacing and one-way cross streets. This paper documents the application of diamond interchange signal control strategies on a sit...

Highway tunnel group has the characteristics of large span and small spacing, load distribution surrounding rock between each section are complex. Based on geological prospecting data numerical analysis software, stress along characteristic profile were obtained. Taking Shenzhen Nanlong complex interchange project as an example, results show that (1) excavation area Qiaocheng main gradient is l...