A Control Method of Rhombus Interchange in Road System
A control method and road system technology, applied in the field of diamond-shaped interchange control, can solve the problems of increasing the travel time of traffic flow, not conforming to the driving habits of drivers, increasing the traffic volume of adjacent road sections and intersections, etc.
Inactive Publication Date: 2015-10-21
TONGJI UNIV
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Problems solved by technology
However, this method needs to change the conventional traffic rules, and change the rule of driving on the right to the left, which does not conform to the driving habits of the driver and may cause potential safety hazards
At the same time, it is necessary to prohibit the direct flow of express roads and auxiliary roads. For urban roads, this flow cannot be ignored. It needs to detour through the road network to reach the destination, which not only increases the travel time of this part of the traffic flow, but also increases the adjacent road sections. and intersection traffic
Method used
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Embodiment 1
[0058] Such as image 3 and as shown in Table 1, image 3 It is a schematic diagram of the geometric conditions of the diamond-shaped interchange ground part in the embodiment of the present invention, and the entrance road and the exit road of each fork are respectively 3 lanes; Table 1 is the traffic demand in the embodiment of the present invention. The saturated flow rate is set to 1800 (pcu / h / ln), the value range of the signal period is [60,120] (s), the green light interval time between each phase is set to 4 (s), and the total loss time of each intersection signal is 12 ( s), the minimum passing speed of the vehicle is 10(m / s). Now adopt the method in the present invention for the ground part of the diamond-shaped interchange, aiming at the maximum reserve traffic capacity of the intersection, carry out intersection geometric setting and signal timing, and compare it with the TTI signal control scheme.
[0059] Table 1
[0060] flow direction
(import i-i...
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Provided is a control method of a diamond interchange of a road system. According to a ground portion, controlled through signals, of the diamond interchange, part of lanes of internal road sections of the diamond interchange ground portion are set to be reversible lanes, and the reversible lanes are used by left turn traffic in the two directions in different time periods of one signal cycle. The control method of the diamond interchange of the road system specifically comprises the step of space setting, the step of signal control and the step of lane control, wherein the step of space setting comprises the step of setting of the reversible lanes and the step of partitioning of lane functions, the step of signal control comprises the step of setting of the phase sequence of phase positions of intersections and the step of signal timing, and the step of lane control comprises the step of control over the traffic directions of the reversible lanes in the time periods of the signal cycle. According to the control method of the diamond interchange of the road system, due to the fact that the space-time resources of the internal road sections of the diamond interchange can be used more efficiently, the traffic capacity of the intersections is improved, and the problem of traffic jams is solved or the condition of the traffic jams is relieved.
Description
technical field [0001] The invention belongs to the fields of traffic engineering, traffic information and control systems, and relates to the technical fields of intersection lane arrangement and signal control, and more specifically, relates to a rhomboid interchange control method. Background technique [0002] Diamond interchange is a commonly used form of interchange in urban road systems. Its ground part is composed of two approach roads and an intersecting road, forming two level intersections, which respectively handle turning traffic in two directions of the main line. The main feature of the ground part of the diamond-shaped interchange is that the distance between the two level intersections is short, so a special signal control scheme is required for its linkage control. How to efficiently utilize the inner road section between two level intersections of the diamond interchange is the key to improving the operation efficiency of the diamond interchange. However,...
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IPC IPC(8): G08G1/07
Inventor 云美萍赵靖
Owner TONGJI UNIV