Multi-level road intersection

Details Multi-level road intersection Multi-level road intersection

2007-06-26

2007-06-26

Hartmann, Gary S. (Department: 3671)

Road structure, process, or apparatus

Road system

Reexamination Certificate

active

11249764

ABSTRACT:
A multi-level road intersection comprises a continuous-flow overpass for handling through traffic traveling on a first road, a continuous-flow underpass for handling through traffic traveling on a second road, and a rotary disposed on a ground level at the crossing area for handling right turn, left turn and U-turn traffics. Change-direction and merge lanes are disposed on the ground level to enable right turn, left turn and U-turn traffics to deviate from the first or second road to enter into the rotary, and to outgo therefrom toward a desired direction. Barrier-free pedestrian walkways are disposed at grade on the ground level adjacent the outer periphery of the rotary to enable pedestrian traffic to traverse the first and/or second roads with ease and with minimum exposure to vehicular traffic.

REFERENCES:
patent: 1689161 (1928-10-01), Skultin
patent: 2941454 (1960-06-01), Cedeno
patent: 3847496 (1974-11-01), Stankiewicz
patent: 4272210 (1981-06-01), Shoji et al.
patent: 4592673 (1986-06-01), Lee
patent: 6685386 (2004-02-01), Lee
patent: 09-137409 (1997-05-01), None
patent: 2005-264581 (2005-09-01), None
Map of intersection of Waterloo Road and Highway 100, Howard County, Maryland.
Map of intersection of Snowden River Parkway and Highway 100, Howard County, Maryland.

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