Interchange system for a roadway
View Patent ↗An interchange system includes a first carriageway, a second carriageway, a first ramp, a second ramp, a third ramp, a fourth ramp, a connecting deck, a first traffic weaving section, and a second traffic weaving section. The first ramp and the second ramp extend from a first portion of the first carriageway. The third ramp and the fourth ramp extend from a first portion of the second carriageway. The first ramp is elevated relative to the second ramp. The fourth ramp is elevated relative to the third ramp. The connecting deck connects the first ramp to the fourth ramp. The first traffic weaving section is defined between the first ramp and the connecting deck. The second traffic weaving section is defined between the fourth ramp and the connecting deck. A primary ramp extends from the first traffic weaving section; a secondary ramp extends from the second traffic weaving section.
1 . An interchange system for a roadway including a first carriageway and a second carriageway, the interchange system comprising:
a first ramp and a second ramp extending from a first portion of the first carriageway, wherein the first ramp is elevated with respect to the second ramp, the second ramp or a first intermediate portion ‘F’ of the first carriageway, and wherein the second ramp or the first intermediate portion ‘F’ extends towards and merges with a second portion of the first carriageway to facilitate traffic movement in a first direction over the first carriageway;
a third ramp or a second intermediate portion ‘S’ of the second carriageway and a fourth ramp extending from a first portion of the second carriageway, wherein the fourth ramp is elevated with respect to the third ramp, or the second intermediate portion ‘S’, and wherein the third ramp or the second intermediate portion ‘S’ extends towards and merges with a second portion of the second carriageway to facilitate traffic movement in a second direction over the second carriageway;
a connecting deck extending from the first ramp to the fourth ramp over and across the second ramp or the first intermediate portion ‘F’ and the third ramp or the second intermediate portion ‘S’ to connect the first ramp with the fourth ramp;
a first traffic weaving section being defined at an interface between the first ramp and the connecting deck and a second traffic weaving section being defined at an interface between the fourth ramp and the connecting deck; and
a primary ramp extending from the first traffic weaving section up to the second portion of the first carriageway, and a secondary ramp extending from the second traffic weaving section up to the second portion of the second carriageway, wherein the connecting deck interconnects the first ramp, the fourth ramp, the primary ramp, and the secondary ramp to facilitate the traffic movement in the first direction and the second direction.
2 . The interchange system as claimed in claim 1 , wherein the primary ramp extends from the first traffic weaving section up to a first portion of an alternate carriageway, and the secondary ramp extending from the second traffic weaving section up to a second portion of the alternate carriageway, and wherein the first portion of the alternate carriageway, the primary ramp, the first traffic weaving section, the connecting deck, the second traffic weaving section, the secondary ramp, and the second portion of the alternate carriageway, facilitate traffic movement in a third direction over the alternate carriageway.
3 . The interchange system as claimed in claim 2 , wherein the second portion of the first carriageway and the second portion of the second carriageway extends towards an intersection where the roadway extends across another roadway having at least one another carriageway, wherein
the first portion of the alternate carriageway, the primary ramp, the first traffic weaving section facilitates traffic movement from the first carriageway to the at least one another carriageway, and
the second traffic weaving section, the secondary ramp, and the second portion of the alternate carriageway facilitates traffic movement from the at least one another carriageway to the second carriageway.
4 . The interchange system as claimed in claim 1 , wherein the first portion of the first carriageway and the first portion of the second carriageway are at an existing ground level (EGL) or finished road level (FRL).
5 . The interchange system as claimed in claim 1 , wherein the second ramp and the third ramp are depressed with respect to a level defined by the first portion of the first carriageway and the first portion of the second carriageway.
6 . The interchange system as claimed in claim 1 , wherein the first direction and the second direction are opposite to each other.
7 . The interchange system as claimed in claim 1 , wherein the second ramp defines a first slope portion extending from the first portion of the first carriageway and a second slope portion extending up to the second portion of the first carriageway, a first deck being defined between the first slope portion and the second slope portion of the second ramp.
8 . The interchange system as claimed in claim 7 , wherein the connecting deck defines a height with respect to a level of the first portion of the first carriageway and the first deck defines a depth with respect to a level of the first portion of the first carriageway, wherein
if a magnitude of the height is larger than a magnitude of the depth, a length of the first ramp is not more than one of:
50 meter in length at 4% gradient or slope;
60 meter in length at 3% gradient or slope;
90 meter in length at 2% gradient or slope; or
165 meter in length at 1% gradient or slope; and
if a magnitude of the depth is larger than a magnitude of the height, a length of the second ramp is not more than one of:
50 meter in length at 4% gradient or slope;
60 meter in length at 3% gradient or slope;
90 meter in length at 2% gradient or slope; or
165 meter in length at 1% gradient or slope.
9 . The interchange system as claimed in claim 1 , wherein the third ramp defines a third slope portion extending from the first portion of the second carriageway and a fourth slope portion extending up to the second portion of the second carriageway, a second deck being defined between the third slope portion and the fourth slope portion of the third ramp.
10 . The interchange system as claimed in claim 9 , wherein the connecting deck defines a height with respect to a level of the first portion of the second carriageway and the second deck defines a depth with respect to a level of the first portion of the second carriageway, wherein
if a magnitude of the height is larger than a magnitude of the depth, a length of the fourth ramp is not more than one of:
50 meter in length at 4% gradient or slope;
60 meter in length at 3% gradient or slope;
90 meter in length at 2% gradient or slope; or
165 meter in length at 1% gradient or slope; and
if a magnitude of the depth is larger than a magnitude of the height, a length of the third ramp is not more than one of:
50 meter in length at 4% gradient or slope;
60 meter in length at 3% gradient or slope;
90 meter in length at 2% gradient or slope; or
165 meter in length at 1% gradient or slope.
11 . The interchange system as claimed in claim 1 , wherein the connecting deck facilitates the traffic movement between the first carriageway and the second carriageway without stoppage of the traffic movement along the connecting deck.
12 . The interchange system as claimed in claim 1 , wherein the connecting deck facilitates a transfer of traffic from the first carriageway in the first direction to the second carriageway in the second direction, or from the second carriageway in the second direction to the first carriageway in the first direction without stoppage of the traffic movement along the connecting deck.
13 . The interchange system as claimed in claim 1 , wherein the connecting deck is devoid of one or more crossovers or one or more intersections.
14 . The interchange system as claimed in claim 1 , wherein the second portion of the first carriageway and second portion of the second carriageway extend towards an intersection and the interchange system is provided away from the intersection to ease traffic burden from the intersection.
15 . The interchange system as claimed in claim 1 , wherein the first traffic weaving section and the second traffic weaving section facilitate a merging or a splitting of an incoming traffic flow at the first traffic weaving section and the second traffic weaving section respectively, and a redirection of the traffic flow onto first ramp, the fourth ramp, the primary ramp, the secondary ramp, or any combination thereof after the merging or the splitting.
16 . The interchange system as claimed in claim 1 , wherein the first ramp, the fourth ramp, the primary ramp, and the secondary ramp facilitate deviation of traffic away from the second ramp or the first intermediate portion ‘F’ and the third ramp or the second intermediate portion ‘S’.