JP2001003303A - Grade separated crossing road and grade separated crossing highway network - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact grade separated crossing road having no need to ensure any additional site and a grade separated crossing highway network. SOLUTION: A grade separated crossing road is a crossroads equipped with a crossing 115 making grade crossing of a first road 111 with a second road 113, a third road 117 and a fourth road 119 extending to both sides of the crossing 115 by holding the crossing between them and a fifth road 121 and a sixth road 123 extending to both sides of the crossing 115 by holding the crossing between them. In that case, the fifth road 121 and sixth road 123 are equipped with a grade separated straight forward crossing 173 with the first road 111, a first space U-turn road 181 making a U-turn on this side of the grade separated straight forward crossing 173 branched from an outward lane of the third road 117 and joined with a return lane of the third road 117, a second space U-turn road 189 of the same kind even in the outward lane of the fourth road 119, a third space U-turn road 191 of the same kind even in the outward lane of the fifth road 121 and a fourth space U-turn road 193 of the same kind even in the outward lane of the sixth road 123.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-level intersection and a multi-level intersection network capable of processing automobile traffic smoothly.

[0002]

2. Description of the Related Art With the progress of the Japanese economy, the content of work has become more complicated, speed has been required, the importance of automobile traffic has been increasing day by day, and the processing capacity of roads has reached its limit. It is starting to have a significant impact on the economy. In particular, a decrease in the processing capacity of roads in cities causes traffic jams, causes pollution such as exhaust gas such as CO ₂ , noise, and the like, and is exerting a great adverse effect on general social life.

[0003] In order to solve such a problem, roads are being grade-crossed, and various grade-crossing roads have been proposed. However, overpasses usually require lanes to handle left and right turns, and therefore require a certain amount of space near the intersection. However, in an artificially crowded urban area, there is a problem that it is difficult to secure a land for a road, and therefore, it is difficult to make a road overpass.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a compact overpass which does not require a new land even in an urban area where it is difficult to obtain a land. It is an object of the present invention to provide an overpass network.

[0005]

A first feature of the present invention is as follows.
An intersection where the first road and the second road intersect at a plane,
A third road and a fourth road that are part of the first road and extend on both sides of the intersection, and a second road that is part of the second road and extend on both sides of the intersection. Fifth Road and Sixth
The fifth road and the sixth road
And a first straight road and a three-dimensional straight intersection that connects the first road and a third straight road, branches off from the outbound lane of the third road toward the three-dimensional straight intersection, makes a U-turn in front of the three-dimensional straight intersection,
A first three-dimensional U-turn road that merges with the return lane of the third road in a direction away from the three-dimensional straight intersection, and branches off from the outbound lane of the fourth road toward the three-dimensional straight intersection, where the three-dimensional straight intersection A second U-turn road that makes a U-turn in front of the road and joins the return lane of the fourth road in the direction away from the three-dimensional straight ahead intersection, and an intersection that branches off from the outbound lane of the fifth road Make a U-turn before the third road and merge into the return lane of the fifth road, and branch off from the outbound lane of the sixth road and make a U-turn just before the intersection to form the sixth road And a fourth three-dimensional U-turn path that merges into the return lane of the vehicle, and the first three-dimensional U-turn path and the second three-dimensional U-turn path are arranged so as to be located inside the first road in plan view. , The third solid U-turn path and the fourth solid U-turn path are Te is that it is arranged to be positioned inside the second road.

A second feature of the present invention is that the first road and the second road are connected to each other.
Is a part of the first road, and a third road, a fourth road, and a part of the second road that extend on both sides of the intersection. In an intersection road having a fifth road and a sixth road extending on both sides of the intersection, the fifth road and the sixth road are cross-connected to the first road and connected. Branch from the outgoing lane of the third straight road and the third road, and head toward the three-dimensional straight crossing,
A three-dimensional U-turn road that makes a U-turn in front of the three-dimensional straight intersection and joins a return lane of a third road in a direction away from the three-dimensional straight intersection; Is located inside the road.

A third feature of the present invention is that the first road and the second road are connected to each other.
Is a part of the first road, and a third road, a fourth road, and a part of the second road that extend on both sides of the intersection. In an intersection road having a fifth road and a sixth road extending on both sides of the intersection, the fifth road and the sixth road are cross-connected to the first road and connected. A three-dimensional U-turn road, comprising a three-dimensional straight-through intersection and a three-dimensional U-turn road that branches off from the outbound lane of the fifth road, makes a U-turn just before the intersection, and merges with the return lane of the fifth road. That is, it is arranged to be located inside the second road in plan view.

[0008] A fourth feature of the present invention is that a first road and a second road are connected.
Both roads are left-hand traffic systems.

A fifth feature of the present invention is that the three-dimensional U-turn road crosses over a straight lane that branches and joins.

A sixth feature of the present invention resides in that at each end of the third road, fourth road, fifth road, and sixth road of the multi-level intersection of the first feature of the present invention, A first feature of the present invention is that a grade separation road is connected.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a diagram showing basic elements of the present invention. In this figure, reference symbol A indicates a road, and the road A is directed in a direction approaching the road A.
A three-dimensional U-turn lane B is provided, which makes a U-turn in front of the road A and moves away from the road A. The following various embodiments are configured by combining such basic road structures.

FIG. 2 is a plan view showing a grade separation road according to the first embodiment of the present invention, and FIG. 3 is a front view thereof.

In these figures, reference numeral 111 denotes a first road, and reference numeral 113 denotes a second road intersecting with the first road 111. An intersection 115 is formed at a portion where the two roads 111 and 113 intersect with each other. The first road 111 has an east road 117 and a west road 119 extending on both sides of the intersection 115,
The second road 113 has a north road 121 and a south road 123 extending on both sides of the intersection 115.

The eastern road 117 has a first lane 125, a second lane 127, and a third lane 129 from the center of the lane to the outside as the outbound lanes toward the intersection 115. The eastern road 117 is located at the intersection 115.
The fourth lane 131, the fifth lane 133, the sixth lane
Lane 135.

The west road 119 has a first lane 137, a second lane 139, and a third lane 141 from the center of the lane toward the outside as the outward lanes toward the intersection 115. The west road 119 is located at the intersection 115.
The fourth lane 143, the fifth lane 145, and the sixth
Lane 147.

The northern road 121 has a first lane 149, a second lane 151, and a third lane 153 from the center of the lane to the outside as the outward lanes toward the intersection 115. The north road 121 is located at the intersection 115
The fourth lane 155, the fifth lane 157, and the sixth
Lane 159.

The southern road 123 has a first lane 161, a second lane 163, and a third lane 165 from the center of the lane to the outside as the outward lanes toward the intersection 115. The south road 123 is located at the intersection 115.
The fourth lane 167, the fifth lane 169, and the sixth lane from the lane center toward the outside
Lane 171.

The second road 113 is provided with a three-dimensional straight intersection 173 that connects the northern road 121 and the southern road 123 and forms a three-dimensional intersection with the first road. This three-dimensional straight intersection 173 connects the innermost first lane 149 and fourth lane 155 of the northern road 121 with the fourth lane 167 and first lane 161 of the southern road 123, respectively. The vehicle between the north road and the south road can be passed without crossing the first road 111 at a plane.

On the other hand, on the first road 111, the first lane 125 and the fourth lane 131 of the eastern road 117 are
The vehicle travels straight and passes under the three-dimensional straight intersection 173, and is connected to the fourth lane 143 and the first lane 137 of the west road 119, respectively.

On the east side road 117, a first foot 175 formed uphill from the second lane 127 toward the graded intersection 116 of the graded intersection 173, and the first foot 1
75, and a graded intersection 1 of a graded intersection 173
The U-turn portion 177 crosses the first lane 125 and the fourth lane 131, and the U-turn portion 1
There is provided a first three-dimensional U-turn path 181 having a second foot 179 connected to the second road 177 and formed on a downward slope leading to a fifth lane 133 in a direction away from the three-dimensional straight intersection 173. Here, the U-turn portion 177 is integrally mounted on the same plane as a three-dimensional intersection portion 173 of the three-dimensional straight intersection 173 that intersects the first road 111 in a three-dimensional manner.

Similarly, on the west road 119, a first foot 183 formed uphill from the second lane 139 toward the three-dimensional straight intersection 173, and a three-dimensional straight ahead connected to the first foot 183. A U-turn that makes a U-turn just before the overpass 111 of the intersection 173 and straddles the first lane 137 and the fourth lane 143, and a direction that is connected to the U-turn 185 and separates from the three-dimensional straight intersection 173. 5th lane 1
A second three-dimensional U-turn path 189 having a second foot 187 formed downhill to 45 is provided. Here, the U-turn part 185 is integrally mounted on the same plane as the three-dimensional intersection 116 of the three-dimensional straight intersection 173.

On the other hand, the north lane 121 has a second lane 1
A third solid U-turn path 191 is provided from 51 to the intersection 115, making a U-turn in front of the intersection 115, and leading to a fifth lane 157 in a direction away from the intersection 115. The third three-dimensional U-turn road 191 is formed on the ground portion of the northern road 121, and the three-dimensional straight intersection 1
The vehicle passes under 73 and goes from the outbound side to the inbound side of the northern road. Also, the second road 123
From the lane 163 to the intersection 115,
A fourth three-dimensional U-turn path 193 is provided, which makes a U-turn in front of the vehicle and moves away from the intersection 115 to the fifth lane 169. This fourth three-dimensional U-turn path 193 is
It is formed on the ground portion of the southern road 123 and passes under the three-dimensional straight intersection 173 so as to pass from the outbound side to the inbound side of the southern road. The third lane 129 of the east side road 117 turns left at the intersection 115 and the south side road 123
Is connected to the sixth lane 171.

The third lane 141 of the west road 119 turns left at the intersection 115 and the sixth lane 15 of the north road 121
9 is connected.

The third lane 153 of the north road 121 turns left at the intersection 115 and the sixth lane 13 of the east road 117
5 is connected.

The third lane 165 of the south road 123 turns left at the intersection 115 and the sixth lane 14 of the west road 119
7 is connected.

FIG. 4 is a plan view showing a grade separation road according to a second embodiment of the present invention, and FIG. 5 is a side view thereof. In these drawings, the same components as those in the first embodiment are denoted by the same reference numerals.

In these figures, reference numeral 111 denotes a first road, and reference numeral 113 denotes a second road that intersects the first road in a T-shape. An intersection 115 is formed at a portion where the two roads 111 and 113 intersect with each other. The first road 111 has an eastern road 117 extending in front of the intersection 115, and the second road 113 has an east road
The vehicle has a north road 121 and a south road 123 extending on both sides of the road 15.

The eastern road 117 has a first lane 125, a second lane 127, and a third lane 129 from the center of the lane to the outside as the outbound lanes toward the intersection 115. The eastern road 117 is located at the intersection 115.
The fourth lane 131, the fifth lane 133, and the sixth
Lane 135.

The northern road 121 has a first lane 149, a second lane 151, and a third lane 153 from the center of the lane toward the outside as the outward lane toward the intersection 115. The north road 121 is located at the intersection 115
The vehicle has a fourth lane 155 and a fifth lane 157 from the center of the lane toward the outside as the return lane in a direction away from the lane.

The southern road 123 has a first lane 161 and a second lane 163 from the center of the lane to the outside as the outward lanes leading to the intersection 115. The southern road 123 has a fourth lane 167, a fifth lane 169, and a sixth lane 171 from the center of the lane toward the outside as return lanes in a direction away from the intersection 115.

The second road 113 is provided with a three-dimensional straight intersection 173 that connects the north road 121 and the south road 123 and forms a three-dimensional intersection with the first road. The three-dimensional straight intersection 173 is the innermost first lane 149 and the fourth lane 155 of the northern road 121 and the fourth lane 155 of the southern road 123.
The lane 167 and the first lane 161 are connected to each other, and vehicles between the north road and the south road can pass without crossing the first road 111 plane.

On the east side road 117, a first foot 175 formed on an upward slope from the second lane 127 toward the three-dimensional straight intersection 173, and a three-dimensional straight intersection 173 connected to the first foot 175. The U-turn part 177 that makes a U-turn in front of the three-way intersection 116 and straddles the first lane 125 and the fourth lane 131, and the fifth turn in the direction away from the three-dimensional straight intersection 173 connected to the U-turn part 177. A first three-dimensional U-turn path 181 having a second foot 179 formed on a downhill to the lane 133 is provided. Here, the U-turn portion 177 is integrally mounted on the same plane as a three-dimensional intersection portion 173 of the three-dimensional straight intersection 173 that intersects the first road 111 in a three-dimensional manner.

On the other hand, the north road 121 has the second lane 1
A third U-turn path 191 is provided from 51 to the intersection 115, making a U-turn before the intersection 115, and leading to a fifth lane 157 in a direction away from the intersection 115. The third U-turn road 191 is formed on the ground portion of the northern road 121, passes under the three-dimensional straight intersection 173, and passes through the northern road from the outward side to the homeward side.

The south road 123 has a second lane 1
A fourth U-turn path 193 is provided from 63 to the intersection 115, making a U-turn in front of the intersection 115, and leading to a fifth lane 169 in a direction away from the intersection 115. The fourth U-turn road 193 is formed on the ground portion of the southern road 123, passes under the three-dimensional straight intersection 173, and passes through the southern road from the outward side to the homeward side.

The first lane 125 and the third lane 125 on the eastern road 117
Lane 129 turns left at intersection 115 and
3 is connected to the sixth lane 171.

The third lane 153 of the north road 121 turns left at the intersection 115 and the sixth lane 13 of the east road 117
5 and the fourth lane 131.

FIG. 6 is a schematic plan view showing an overpass road network 100 according to a third embodiment of the present invention. In these drawings, the same components as those in the first embodiment are denoted by the same reference numerals.

In this figure, reference numeral 101 indicates the first overpass which is shown in FIG. The first overpass 101 is composed of an east road 117, a west road 119, and a north road 12
1. Each has a south road 123. East Road 117
Is connected to a second overpass 201 which is the same as the first overpass. Similarly, on the west road 119, the north road 121, and the south road 123, the third overpass road 301 and the fourth overpass road 4, which are the same as the overpass road 101, are provided.
01 and the fifth overpass 501 are connected to each other.

In the above configuration, the vehicle goes straight,
The method of turning left and right is described below.

The case of the four intersections shown in FIGS. 2 and 3 will be described. First, when going straight from the east road to the west road, reference numerals 1, 2, 3, 4, 5, 6, 7 in FIG. Drive in the order from east to west. When making a left turn from the east road to the south road, turn left in the order of reference numerals 8, 9, 10, 11, and 12.

When traveling straight from the west road to the east road, see FIG.
, Reference numerals 41, 42, 43, 44, 45, 46,
Travel from west to east in the order of 47. When making a left turn from a west road to a north road, turn left in the order of reference numerals 48, 49, 50, and 51.

When traveling straight from the north road to the south road, FIG.
, The vehicle travels from north to south in the order of reference numerals 27, 28, 29, 30, and 31. When making a left turn from a north road to an east road, turn left in the order of 32, 33, 34, 35.

When going straight from the south road to the north road, FIG.
, The vehicle travels from south to north in the order of 13, 14, 15, 16, and 17. When making a left turn from a south road to a west road, turn left in the order of reference numerals 18, 19, 20, 21.

Next, in the multi-junction road network 100, the east road 117 of the first multi-junction road 101 is crossed to the intersection 115.
A case in which a car traveling toward is going to turn right on the north road 121 will be described with reference to FIGS.

First, the vehicle enters the third lane 129 of the east road 117 of the first overpass 101, and the reference numerals 8, 9, 10,
Turn left in the order of 11 and 12. Then, go to the fifth overpass 501, where reference numerals 57, 58, 59, 6
A U-turn is performed in the order of 0 and 61 (see FIG. 2). Next, the car returning to the first overpass 101 is on the south road 12
From 3, the vehicle passes through the three-dimensional straight intersection 173 to the north road 121 in the order of the reference numerals 13, 14, 15, and 16. In this way, a right turn from the east road 117 to the north road 121 is possible.

First, the vehicle enters the first lane 125 of the east road 117 of the first overpass 101, passes under the straight overpass 173, and is denoted by reference numerals 1, 2, 3, 4, 5,.
Go straight in the order of 6. And the third overpass 3
01, where reference numerals 22, 23, 24, 25, 2
Make a U-turn in the order of 6 (see FIG. 2). Then, the vehicle returning to the first overpass 101 enters the third lane 141 of the west road 119 and turns left in the order of 48, 49, 50 and 51. In this way, a right turn from the east road 117 to the north road 121 is possible.

To make a right turn from the west road to the south road, turn left in the order of 48, 49, 50, and 51 on the first overpass 101 and turn off 52 and 5 on the fourth overpass 401 on the north.
Make a U-turn in the order of 3, 54, 55, 56 and go straight to the south, or at the first overpass 101, reference numerals 41, 42, 4
Go straight on in the order of 3, 44, 45, 46, 47,
In the overpass 201, reference numerals 36, 37, 38, 39,
Make a U-turn in the order of 40 and return to the first overpass 10
At 1, the vehicle turns left in the order of 8, 9, 10, 11, and 12.

To make a right turn from the north road to the west road, turn left in the order of signs 32, 33, 34 and 35 on the first overpass 101 and turn off 36 and 3 on the second overpass 201 on the east side.
Make a U-turn in the order of 7, 38, 39, 40 and go straight to the west or at the first overpass 101, sign 27, 28, 2
Go straight ahead in the order of 9, 30, 31 and on the fifth overpass road 501 on the south side, U in the order of the signs 57, 58, 59, 60, 61.
Turn and return, and at the first overpass 101, sign 1
Turn left in the order of 8, 19, 20, 21.

To make a right turn from the south road to the east road, turn left in the order of 18, 19, 20, and 21 on the first overpass 101 and turn 22 and 2 on the third overpass 301 to the west.
Make a U-turn in the order of 3, 24, 25, 26 and go straight east or on the first overpass 101,
Go straight ahead in the order of 5, 16, and 17, and take the U in the order of symbols 52, 53, 54, 55, and 56 on the fourth overpass road 401 on the north side.
Turn and return. At the first overpass 101, sign 3
Turn left in the order of 2, 33, 34, 35.

The case of the three intersections shown in FIGS. 4 and 5 will be described. First, when making a left turn from the east road to the south road, turn left in the order of reference numerals 8, 9, 10, 11, and 12 in FIG. Or turn left in the order of reference numerals 1, 2, 3, 11, and 12. When going straight from the north road to the south road, sign 27,
Go straight in the order of 28, 29, 30, 31. When turning left from the north road to the east road, in FIG.
Turn left in the order of 3, 34, 35, or 32, 33, 4
Turn left in the order of 6, 47. When going straight from the south road to the north road, reference numerals 13, 14, 15, 16,
Travel in the order of 17 from south to north.

When making a right turn from the east road to the north road, the signs 8, 9, 10, 11, 12 or the signs 1, 2, 3, 1
Turn left in the order of 0, 11, and 12 and go to the same overpass which is connected to the south side.
Make a U-turn as shown at 9, 60 and 61 and go straight to the north road.

When making a right turn from the south road to the east road, go straight on in the order of 13, 14, 15, 16, 17 and go to the same overpass which is connected to the north side, where there are 52, 53, Make a U-turn as indicated by 54, 55 and 56, return again, and turn left on the east road in the order of signs 32, 33, 34 and 35.

As described above, in the above-described embodiment, a three-dimensional straight intersection is provided at an existing intersection, and a U-turn is made before the three-dimensional straight intersection, toward the three-dimensional straight intersection,
By simply providing a three-dimensional U-turn path in a direction away from the three-dimensional straight intersection, all of straight traveling, left turn, and right turn can be processed by the three-dimensional intersection. Therefore, it is possible to make an intersection three-dimensionally without acquiring a new land, and it is possible to provide an optimum road structure particularly in an urban area where it is difficult to acquire a new land. Therefore, it is possible to make the roads that intersect with the main motorway nonstop, and to increase the traffic processing efficiency of the motorway network.

In the above-described embodiment, of the two roads that cross over each other, the upper road is an elevated portion away from the ground surface, and the lower road is on the ground surface. However, the present invention is not limited to this. Alternatively, the lower road may be at the underground portion and the upper road may be at the ground surface.

Further, in the multi-level intersection road network shown in FIG. 6, the eastern road 117 between the multi-level intersection 101 and the multi-level intersection 201 is provided with roads 701, 70
3 is provided, the vehicle turning left from the road 701 is denoted by reference numeral 7
Turn left in the order of 11, 713 and the car going straight
Go in the order of 5, 717 and 721, and turn right.
It proceeds in the order of 15, 717 and 719. As described above, in this overpass road network 100, the overpass road 10
Also at the intersection of the plane intersection between 1, 201, the vehicles can turn left, go straight, and turn right without crossing the plane.

Although the plurality of overpass roads shown in FIG. 6 combine the overpasses of the four-way intersection shown in FIG. 2, the combination is not limited to this.
May be appropriately combined with each other. Also, in FIG. 6, instead of this multi-level intersection 501 at the position of the fifth multi-level intersection 501, as shown in FIG. The same effect can be obtained by providing 601. That is, it is possible to make a right turn by passing in the order of reference numerals 611, 613, 615, 617, and 619.

[0058]

As described above, according to the present invention, a three-dimensional straight intersection is provided at an existing intersection, and a U-turn is made toward the three-dimensional straight intersection and before the three-dimensional straight intersection,
By simply providing a three-dimensional U-turn path in a direction away from the three-dimensional straight intersection, all of straight traveling, left turn, and right turn can be processed by the three-dimensional intersection. Therefore, it is possible to make a three-dimensional intersection at an intersection without acquiring a new land, and it is possible to promote a three-dimensional intersection of a road even in an urban area where it is difficult to obtain a new land. Therefore, it is possible to make the roads that intersect with the main motorway nonstop, and to increase the traffic processing efficiency of the motorway network.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing basic elements of the present invention.

FIG. 2 is a plan view showing the first embodiment of the present invention.

FIG. 3 is a front view of the first embodiment shown in FIG. 2;

FIG. 4 is a plan view showing a second embodiment of the present invention.

FIG. 5 is a front view of the second embodiment shown in FIG.

FIG. 6 is a plan view showing a grade separation road network obtained by combining a plurality of grade separation roads shown in FIG. 2;

FIG. 7 is a plan view showing a modification of the grade separation road network shown in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 100 Multilevel Intersection Road Network 101 First Multilevel Intersection Road 111 First Road 113 Second Road 115 Intersection 117 East Road 119 West Road 121 North Road 123 South Road 173 Three-Dimensional Straight Intersection 181 First Three-Dimensional U-Turn Road 189 Second three-dimensional U-turn road 191 Third three-dimensional U-turn road 193 Fourth three-dimensional U-turn road 201 Second two-dimensional crossing road 301 Third three-dimensional crossing road 401 Fourth multi-level intersection 501 501 Fifth three-dimensional Intersection road

Claims (7)

[Claims] 1. An intersection where a first road and a second road intersect at a plane, and a third road which is a part of the first road and extends on both sides of the intersection. A fifth road and a sixth road, which are part of a fourth road and the second road and extend on both sides of the intersection, with the fifth road and the fifth road interposed therebetween; A three-dimensional straight intersection that connects the sixth road with the first road at an overpass, and a three-dimensional straight intersection that branches off from an outbound lane of the third road toward the three-way straight intersection. A U-turn in front of the first three-dimensional U-turn road that merges with the return lane of the third road in a direction away from the three-dimensional straight intersection, and branches off from the outbound lane of the fourth road. Head toward the three-dimensional straight intersection, make a U-turn just before the three-dimensional straight intersection, A second three-dimensional U-turn road that merges into the return lane of the fourth road in a direction away from the heading intersection, and branches off from the outbound lane of the fifth road and makes a U-turn before the intersection. A third three-dimensional U-turn road merging with the return lane of the fifth road; and a U-turn branching from the outbound lane of the sixth road before the intersection, and returning to the sixth road. And a fourth three-dimensional U-turn path merging into the lane, wherein the first three-dimensional U-turn path and the second three-dimensional U-turn path are located inside the first road in plan view. A three-dimensional intersection road, wherein the third three-dimensional U-turn path and the fourth three-dimensional U-turn path are disposed so as to be located inside the second road in plan view. 2. An intersection where a first road and a second road intersect at a plane, and a third road which is a part of the first road and extends on both sides of the intersection. A fifth road and a sixth road, which are part of a fourth road and the second road and extend on both sides of the intersection, with the fifth road and the fifth road interposed therebetween; A three-dimensional straight intersection that connects the sixth road with the first road at an overpass, and a three-dimensional straight intersection that branches off from an outbound lane of the third road toward the three-way straight intersection. And a three-dimensional U-turn path that merges with the return lane of the third road in a direction away from the three-dimensional straight ahead intersection and the first three-dimensional U-turn path in plan view. Characterized by being located so as to be located inside a road Road. 3. An intersection where a first road and a second road intersect at a plane, and a third road which is a part of the first road and extends on both sides of the intersection. A fifth road and a sixth road, which are part of a fourth road and the second road and extend on both sides of the intersection, with the fifth road and the fifth road interposed therebetween; A three-dimensional straight-through intersection connecting the sixth road and the first road at an overpass, and branching from an outbound lane of the fifth road and making a U-turn just before the intersection, A three-dimensional U-turn road that merges with the return lane of the road, wherein the three-dimensional U-turn road is disposed so as to be located inside the second road in plan view. road. 4. The system according to claim 1, wherein said first road and said second road are both left-hand traffic systems.
An overpass that is described in one of the above. 5. The overpass according to claim 4, wherein the three-dimensional U-turn road crosses a straight lane at which the three-dimensional U-turn road branches off and joins. 6. The third road of a grade separation road according to claim 1.
3. The multi-level intersection road network, wherein the multi-level intersection road according to claim 1 is connected to each of the road, the fourth road, the fifth road, and the sixth road. 7. The grade-crossing road network according to claim 6, wherein the three-dimensional U-turn road crosses a straight lane at which the three-dimensional U-turn path branches and joins.