CN1231361A

CN1231361A - Double-way traffic control method and equipment

Info

Publication number: CN1231361A
Application number: CN 98110773
Authority: CN
Inventors: 王培绿
Original assignee: BAOJING INDUSTRY Co LTD SHANGHAI
Current assignee: BAOJING INDUSTRY Co LTD SHANGHAI
Priority date: 1998-04-09
Filing date: 1998-04-09
Publication date: 1999-10-13
Also published as: WO1999053460A1; CN1148711C; CN1296603A; AU3136399A

Abstract

The present invention relates to a traffic control method and its equipment. It is aimed at solving the traffic jam at intersection so as to improve the traffic condition of the whole traffic system. It is characterized by broadening the width of entrance and exit roadway at the intersection, adopting two stop lines and using timing or real-time control signal system to command the running of vehicles. Said invention can be used for traffic control.

Description

Double-way traffic control method and equipment

The present invention is a kind of control method and equipment of road traffic fluid

The background technology of this invention is the method and the recoil simulator of existing intersection traffic flow control

The objective of the invention is the method and the recoil simulator equipment of the traffic control of the application of the invention proposition, improve the traffic capacity at intersection place, thereby eliminate or alleviate greatly the traffic jam of crossing, and then improve the traffic status of whole approach system.

Technical scheme of the present invention

For methods of this invention will be better understood, at first introduce relevant traffic flow theory.，

Definition one, we travel permit number road when allowing that the current time, long-pending sum called the intersection in all directions road in a signal period, a certain unidirectional cross section of intersection long-pending and.The bar number of the road a certain direction road in time R mouth-intersection that a certain direction vehicle in intersection is allowed to pass through in long-pending and T mouth-signal period when being J mouth=∑ T mouth * R mouth J mouth-intersection road

Definition two, we allow in the bar number of upstream, intersection road and signal period the current time long-pending when calling the upstream road on the long-pending J in road=T on * the last J of R on-during the road of upstream, intersection the road amass on the T-the time R of interior P Passable of signal period on-road, upstream, intersection travel permit number.

During the intersection road road long-pending and during with upstream, intersection road the road integration do not reflected the traffic capacity of intersection road and upstream, intersection road, big more its traffic capacity is also just big more on J mouth or the J.

Definition three, we during the intersection road road long-pending and during with upstream, intersection road the long-pending ratio in road call the Shi Daoji ratio.Promptly The long-pending ratio in road during H-

Shi Daoji is bigger more than the traffic capacity of the big more crossing of ratio H of expression intersection road passage capability value and upstream, intersection road passage capability value, can adapt to the current requirement of its upstream road vehicle more.Under many circumstances, H is near about 50%, and the traffic capacity that is to say crossing only is 50% of its upstream road passage capability.H only is about 25% under many situations, and at this moment the intersection road passage capability only is 25% of its upstream traffic capacity, and this just no wonder will block up when the road traffic status meets or exceeds fifty percent.

If matching law we increase crossing inlet Dao Shidao long-pending and and exit ramp is adapted with it, the road was long-pending at that time will adapt with its upstream road passage capability than reaching 1 o'clock intersection capacity, and promptly the upstream road vehicle can all pass through intersection in the signal period.

Matching law is a core theory of the present invention.What then should decide according to the needs of vehicle pass-through and the permission of objective condition as for matching degree.

Method of the present invention:

Method one, widen intersection import and export road

1, increases the bar number of straightgoing vehicle entrance driveway, exit ramp

According to the principle that matching law disclosed, increase the bar number of intersection straightgoing vehicle entrance driveway, make it to adapt to the current requirement that the entrance driveway updrift side is sent a car, simultaneously for adapting to the increase of entrance driveway bar number, increase straightgoing vehicle exit ramp bar number again, the bar number that makes the intersection import and export road adapts.

2, increase the bar number of the left and right entrance driveway exit ramp of changing trains or buses

According to the principle that matching law disclosed, increase the bar number of left and right turning car into and out of stomatodeum, make it to adapt to the current requirement that the entrance driveway updrift side is sent a car.For adapting to the increase of entrance driveway bar number, the bar number of turning car exit ramp about increasing again, the exit ramp bar number of increase should be counted sum with the entrance driveway bar that respectively this exit ramp is corresponding and equate simultaneously.

Above method is imported and exported road travel permit number owing to increased the intersection, thereby can eliminate the traffic status that the intersection traffic jam is improved whole approach system in theory, but its weak point is to have increased intersection traffic land used morely.

Method two, two stop lines are set

The way of this method is that the vehicle of entrance driveway all directions is stopped at the second stop line in accordance with regulations, according to signal, the vehicle of some direction (as the straightgoing vehicle direction) sails the entrance driveway between second and article one stop line into through the second stop line and crosses article one stop line and pass through the intersection.And then in addition the vehicle of a little directions (as left and right turning car direction) crosses the second stop line according to signal immediately following the straightgoing vehicle of front and enters the entrance driveway between second and article one stop line and cross article one stop line and pass through the intersection.

The characteristics of this method are that the vehicle of different directions utilizes the time difference to share same road and the phase mutual interference does not take place, thereby have improved the service efficiency of road.

Its usage degree of above method is can be different, and it is according to there being two, and one is needs, and its Consideration is the traffic status of vehicle, the 2nd, may, its Consideration is intersection road structure and intersection other building structure of periphery and land used factor.

Realize the equipment of the inventive method:

Because this method has adopted two stop lines, for staff vehicles just must be set up two cover recoil simulators by first, second stop line respectively.This two covers recoil simulator is combined into a recoil simulator system.

Can make according to different situations and to have two kinds of heteroid recoil simulators, the first is the traffic control signal device regularly, and it two is Real time Adaptive Traffic Control recoil simulators.

The beneficial effect of this method:

Obstruction in various degree will appear in (being to surpass 2 one-tenth halfs in some cases) at grade intersection when upstream, intersection road traffic meets or exceeds fifty percent, though adopt graded crossing can improve traffic volume, but its cost height takes up an area of bigger, general consequences for use and does not survey imagination.

And use this method, the vehicle that can eliminate or alleviate greatly intersection traffic jam different directions under the condition of at grade intersection utilizes the time difference to share same track the road service efficiency of crossing is improved greatly.This design for newly-built plane or overpass engineering simultaneously will produce significant impact, owing to used this method that people will be changed for the evaluation of road passage capability, and then make people dwindle the scale of newly-built highway construction, thereby save huge construction fund.

Realize mode of the present invention:

The present invention be solve a kind of method of intersection road problem, applicable to many different types of intersections, different intersections difference slightly in the use of this method.For an example explanation is lifted in the better use of this method.

The road travel permit number of a certain direction in intersection upstream is two as shown in the figure, is respectively M.N, and with possibility, we widen the crossing inlet road and are Four-Lane Road as required, and each section is respectively A1, B1, C1, D1 and A2, B2, C2, D2.Establish first stop line at the X place, establish second stop line at the Y place.When M, vehicle approaching E place, N road, the left-hand rotation car sails the A1 track into, and straightgoing vehicle sails B1, C1 track, right-hand rotation car into and sails the D1 track into.Correspondingly, it is four that the straightgoing vehicle exit ramp is also widened, and left and right turning roadway is also widened according to above method is corresponding.At first the straightgoing vehicle in the signal command B1 at Q place, C1 track enters A2, B2, C2, D2 track and stops at the X place.When the signal lamp at P place when allowing the current green light of straightgoing vehicle, the straightgoing vehicle in A2, B2, C2, D2 track is successively by X and enter exit ramp by the intersection successively.Adapt therewith, the turning car in the signal lamp at Q place commander A1, D1 track follows and enters A2, B2, C2, D2 track in the straightgoing vehicle back, when green light that P place signal lamp travels for permission turning car, the turning car on A2, B2, C2, the D2 track enters exit ramp by predetermined direction by the intersection successively.

Claims

1, widens the intersection into and out of stomatodeum.Existing method is for to widen left and right changing trains or buses at entrance driveway, and the place widens right-turn lane at exit ramp.Feature of the present invention is not only to widen left and right commentaries on classics import track, and widens the straightgoing vehicle entrance driveway, not only widens right-hand rotation car exit lane, also widens straightgoing vehicle, left-hand rotation car exit lane.When widening left and right changing trains or buses during exit ramp, must consider left and right change trains or buses exit ramp bar number with this direction (left side or right) with count sum from other direction road travel permit and adapt.

2, two-way traffic control method.Existing technology is that each entrance driveway place, intersection establishes a stop line, vehicle according to signal command by stop line and pass through the intersection.Feature of the present invention is to establish two stop lines at the crossing inlet place, vehicle according to signal respectively by first, second stop line and pass through the intersection.

3, realize the specialized signal equipment of above control method.Prior art is to adopt a cover recoil simulator.And the present invention adopts two stop lines, thereby has also just adopted two cover recoil simulators, and they command the vehicle ' at first, second stop line place respectively.This two covers recoil simulator is formed a composite signal system.

4, claim of quoting 1 and 2 method can be used separately also and can merge use.

5, the method for the claim of quoting 2 can be used separately also can merge with single stop line control method of prior art and use.

6, the claim of quoting 2 and 5 can be used separately also and can hand over the special envoy to use with existing control method.

7, the claim of quoting 3 can adopt the timing controling signal system.

8, the claim of quoting 3 can adopt real-time control system.