Road structure – process – or apparatus – Road system
Patent
1990-11-13
1992-03-03
Bagnell, David J.
Road structure, process, or apparatus
Road system
340925, 340944, E01C 102
Patent
active
050927051
ABSTRACT:
A system for controlling vehicles and pedestrians on intersecting one-way roadways. Vehicles on a first one-way street are only allowed, with a "go" signal to either cross the intersection and continue on the street or to turn onto the intersecting one-way street. The vehicles on the intersecting, second one-way street are stopped while vehicles on the first street are moving. During this time pedestrians are allowed to cross in front of the stopped vehicles on the second one-way street. Then, when the light changes, the vehicle traffic on the second one-way street are only allowed to turn onto the first one-way street, i.e., they are blocked from crossing the intersection and continuing onto the second one-way street. During this time, the vehicles on the first one-way street are blocked, too, from entering the intersection. During this time, pedestrians may cross between adjacent corners to the stopped vehicles on the first one-way street and, at the same time, between opposite corners of the second one-way street, downstream of the portion of the intersection. Intermodal conflict or friction is thus eliminated.
REFERENCES:
patent: 4927288 (1990-05-01), Raswant
American City Magazine, vol. 105, "Walk Signals for Pedestrians", W. A. Van Duzer, 5-1937.
Bagnell David J.
Langsam Andrew S.
Lerner Henry R.
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