Simplified "T" interchange designs for a "T" intersection of a divided expressway or freeway with a two lane highway

a technology of divided expressways and interchange designs, which is applied in the direction of roads, roadways, constructions, etc., can solve the problems of a lot of accidents at some intersections

Inactive Publication Date: 2005-01-13
LINDSEY WILLIAM J
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0059] Transition ramp 86, which is approximately 1000 feet long, enables vehicles exiting the two lane highway 79 to make a smooth transition when making a right turn off of the two lane highway 79 onto the expressway side 82. Vehicles using transition ramp 86 are not required to stop as they engage expressway 82. Transition ramp 86 forms a third lane that enables vehicles to get up to speed before they are required to merge into the two lanes 82 of the expressway.
[00

Problems solved by technology

However, there have been a lot of accidents at some of the intersections.
The main cause of the accidents are because of the lack of overpass bridges and “on

Method used

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  • Simplified "T" interchange designs for a "T" intersection of a divided expressway or freeway with a two lane highway
  • Simplified "T" interchange designs for a "T" intersection of a divided expressway or freeway with a two lane highway
  • Simplified "T" interchange designs for a "T" intersection of a divided expressway or freeway with a two lane highway

Examples

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Embodiment Construction

[0067]FIG. 8 is drawing showing a plan view of of first example of a improved design for “T” interchange of a divided expressway with a two lane highway. The two lane highway 98 and the four lane expressway 100 connect form a “T” interchange generally at 115. Divided expressway 100 has a median 122 between the lanes of traffic. When a vehicle is traveling on the two lane highway 98 toward the divided expressway 100, that vehicle passes up ramp 124 and over bridge 126 and stops in front of stop sign 128. After stopping, vehicle would then make a left turn, travel down ramp 130 and proceed onto merging ramp 132 and eventually merge into expressway lanes 110.

[0068] Vehicles desiring to make a right turn off of two lane highway 98 onto the first two lanes 106 of the expressway use ramp 138. A merging lane enables vehicles to get up to speed before merging onto the expressway lanes 106.

[0069] Vehicles making a right turn off the expressway lanes 106 onto the two lane highway 98 have an...

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PUM

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Abstract

A simplified “T” interchange design is provided for an intersection of a four lane expressway with a two lane highway. The design uses one, short, two lane bridge over two lanes of traffic. The design would be very inexpensive to build when compared to the cost to build a conventional interchange. The design would be very safe for vehicles passing through the interchange from any direction. Vehicles are never required to cut across lanes of high speed traffic when making transitions between the two lane highway and the expressway.

Description

[0001] This application claims priority to U.S. Provisional Application No. 60 / 427,868 filed on Nov. 19, 2002 which for purposes of disclosure is incorporated herein by specific reference.BACKGROUND OF THE INVENTION [0002] Most people are familiar with the interstate freeway system in the United States. The four lane interstate highway system interconnects all of the states. The standard design of this interstate system provides safe divided highways with at least two lanes of traffic in opposite direction. Where the interstate system intersects two lane highways such as state highways or county highways, an over-pass bridge is always provided so that traffic never cuts in front of each other on the same level. Additionally, “off ramps” are always provided so that vehicles can safely make the transition off of the freeway and onto the intersecting highways. Also, “on ramps” are always provided so that vehicles can make the transition from the intersecting two lane highways onto the ...

Claims

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Application Information

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IPC IPC(8): E01C1/00E01C1/02E01C1/04
CPCE01C1/002E01C1/04E01C1/02
Inventor LINDSEY, WILLIAM J.
Owner LINDSEY WILLIAM J
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