Interpass: Uninterrupted, Grade-Level Interchange having One-way Approach and Departure Legs

Abstract

The Interpass: Uninterrupted, Grade-Level Interchange having One-way Approach and Departure Legs is a geometric design for an at-grade interchange of one-way roadways that has no conflict points and which allows uninterrupted, uniform-velocity traffic flow. The subject invention is neither an overpass, nor an underpass, nor an at-grade intersection, nor a grade-separated interchange, and it has comparatively few of the negative qualities associated with those types of roadway junctions. Uninterrupted, grade-level interchanges of the subject design, when connected into a directed transportation network having one-way roadway segments, can constitute the nodes of an intrinsically-safe, grade-level, arterial or collector transportation facility with superior controllability, efficiency and safety, compared to those of traditional facilities.

I claim: 
     
         1 . A geometric design, as described in the specification and drawings heretofore attached, for a roadway junction that:
 a. is entirely grade-level,   b. has no conflict points, allowing uninterrupted, uniform-velocity traffic flow,   c. may have any integer number, greater than or equal to two, of inbound, one-way approach legs, each approach leg having any positive-integer number of lanes, and   d. provides at least two unique choices of outbound direction, via one-way departure legs, for each inbound approach leg.   
     
     
         2 . In reference to  claim 1  of this section, each permutation of every combination of numbers of approach legs and numbers of approach leg lanes of the subject invention comprises a different embodiment of the invention.