CN108842652A - A kind of expressway ramp merging area is variable to collaborate graticule and its setting method - Google Patents
A kind of expressway ramp merging area is variable to collaborate graticule and its setting method Download PDFInfo
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- CN108842652A CN108842652A CN201810857116.5A CN201810857116A CN108842652A CN 108842652 A CN108842652 A CN 108842652A CN 201810857116 A CN201810857116 A CN 201810857116A CN 108842652 A CN108842652 A CN 108842652A
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- interflow
- graticule
- merging area
- vehicle
- variable
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
- E01F9/576—Traffic lines
- E01F9/582—Traffic lines illuminated
Abstract
The invention patent discloses a kind of variable interflow graticule of expressway ramp merging area and its setting method, it can be changed graticule using the LED that merging area acceleration lane and main line outermost lane boundary section is arranged in, according to main line and ring road wagon flow different flow and velocity composition, dynamically adjust the length that not may span across lane line in the same direction, to guarantee that ring road vehicle avoids the region for being not suitable for interflow as far as possible, the speed difference between main line wagon flow and ring road vehicle to be collaborated is reduced, the safety of merging area is promoted；Simultaneously, length needed for length needed for accelerating to minimum interflow speed according to merging area vehicle and vehicle remittance process, determine the length that not may span across solid white line theoretically, that is the solid line total length of white line and LED light group composition, the flexibly work combination of allotment LED light group display unit and white line, so that the present invention is suitable for the road type of different structure construction, flexibility is more preferable, and the scope of application is wider.
Description
Fields
The invention belongs to traffic control device fields, and in particular to a kind of variable interflow graticule of expressway ramp merging area
And its setting method.
Background technique
Since reform and opening-up, sharply increasing for highway scale greatly supports the fast development of China's economic, but
The traffic safety status of highway but allows of no optimist.Expressway ramp merging area mainly includes ordinary road and highway
Two class of coupling part and Interchange Expressway coupling part, in safe operation of the interflow behavior to traffic of the region vehicle
There is large effect.Vehicle easily causes driver in judgement, operating aspect in behaviors such as acceleration and deceleration, the lane changes in the region
Fault, so as to cause traffic accident.
The country is about in the specification of traffic marking, and for the setting method of vernier line under ring road merging area, there is no specific
It may span across lane line in the same direction, i.e. white dashed line it is required that generally all solely applying to draw in reality, and do not consider to apply and draw part not
It may span across the line of demarcation in lane in the same direction, that is, the solid white line described in us.Due to acceleration lane and main line outermost lane
Between it is all may span across white dashed line, ring road vehicle relies on the judgement of driver itself for importing the selection of point completely, by
The vehicle that ring road drives into usually imports main line in the state of accelerating insufficient in advance, so that fast between ring road vehicle and main line vehicle
Degree difference is excessive, then causes traffic accident.Meanwhile when the speed of wagon flow and vehicle flowrate change, ring road vehicle imports main line
The length for needing to travel is different again, this is provided with many obstructions for the reasonable arrangement at expressway ramp interflow, can not
In the interflow graticule of the same model of all highway merging areas and type, for the reasonable of means of transportation control field
Layout increases not small difficulty.
Summary of the invention
The present invention is exactly directed to the problems of the prior art, provides a kind of variable interflow mark of expressway ramp merging area
Line and its setting method can be changed graticule using LED, for different friendships by obtaining ring road merging area dynamic traffic stream information
Logical state setting different length not may span across lane line in the same direction, and guarantee ring road vehicle as far as possible is avoided being not suitable for interflow
Region promotes the safety of merging area.
To achieve the goals above, the technical solution adopted by the present invention is that：A kind of expressway ramp merging area is variable to be closed
It fails to be sold at auction line, positioned at the boundary of expressway ramp merging area acceleration lane and main line outermost lane, using junction of two streams as starting point,
Including spaced LED light group, the white space between the lamp group is equipped with white line, when LED light group work, white line and LED
Lamp group collectively constitutes solid white line；When LED light group is standby, white line and LED light group collectively constitute white dashed line.
As an improvement of the present invention, the LED light group at least constitutes a display unit, and each display unit is independent
Select work or standby.
As an improvement of the present invention, the length and width of the LED light group, the length of white line between adjacent LED lamp group
Degree with it is of same size.
To achieve the goals above, the present invention also the technical solution adopted is that：A kind of expressway ramp merging area is variable
The setting method for collaborating graticule, when LED light group work, the solid line length l of white line and LED light group compositionl=la+lw, wherein la
Length needed for accelerating to minimum interflow speed for merging area vehicle, lwFor length needed for vehicle remittance process.
As an improvement of the present invention, length l needed for the merging area vehicle accelerates to minimum interflow speedaIt calculates
Formula is as follows：
Wherein vcFor the minimum interflow speed of merging area；vrFor ring road wagon flow average running speed；A is the gradient when being 0 on ring road
The average acceleration of car；I is the gradient；G is acceleration of gravity.
It is improved as another kind of the invention, length l needed for the vehicle remittance processwCalculation formula is：
WhereinThe waiting time on interflow opportunity is found for vehicle, when ξ is that vehicle adjusts required for parking stall
Between, vmWagon flow of the serving as theme speed of service.
It is improved as another kind of the invention, the waiting time calculation formula that the vehicle two finds interflow opportunity is as follows：
λ serves as theme outermost lane vehicle arriving rate in formula；qrOutermost of serving as theme lane flow；When α is interflow delay
Between；τ is time headway；
Time calculation formula needed for vehicle adjustment parking stall is as follows：
As another improvement of the invention, every k lamp group group is combined into a display unit, then needs the display of work
The calculation formula of unit is shown below：
K is lamp group number in each unit in formula, and d is the length of single lamp group, and m is the display unit for needing work
Number.
As a further improvement of the present invention, display unit number if desired is mmax, then the LED light that needs to be arranged
Group number is 2mmax。
As a further improvement of the present invention, the average running speed for determining main line and ring road, for main line and ring road
Different volume of traffic combinations, calculates and needs corresponding variable graticule state, obtains the threshold figure of corresponding states, and investment application is real
It applies.
Compared with prior art, the invention discloses a kind of variable interflow graticule of expressway ramp merging area and its
Setting method provides a kind of operation of ring road interflow by the way that variable interflow graticule is arranged in expressway ramp merging area part
New method, reduce ring road wagon flow and main line outermost wagon flow speed difference, prevent merging area vehicle due to acceleration it is insufficient and
Main line is imported in advance, so as to improve highway merging area safety, reduces traffic accident；Meanwhile the present invention is abundant
The time variation of merging area main line and ring road traffic flow is considered, interflow graticule can be adjusted according to the actual situation, for different
Traffic flow modes combination, dynamically adjusts variable graticule length, to guarantee wagon flow under the premise of guaranteeing wagon flow efficient operation
The safety of operation, suitable for the road type of different structure construction, flexibility is more preferable, and the scope of application is wider.
Detailed description of the invention
Fig. 1 is a kind of setting schematic diagram of the variable interflow graticule of expressway ramp merging area of the present invention；
Fig. 2 is the topology layout figure of LED light group of the present invention and white line；
Fig. 3 is that the invention shows the work combination diagrams of LED light group in unit and white line；
Fig. 4 is flow combination and variable graticule working cell number relational graph in the embodiment of the present invention 3；
Fig. 5 is that can be changed graticule working cell threshold figure in the embodiment of the present invention 3.
Specific embodiment
Below with reference to drawings and examples, the present invention is described in detail.
Professional knowledge introduction
It is empty for white one is the line of demarcation that may span across lane in the same direction there are two types of line is most commonly seen in field of road traffic
Line, another kind are the lines of demarcation that not may span across lane in the same direction, are solid white line.
Embodiment 1
As shown in Figure 1, a kind of variable interflow graticule of expressway ramp merging area, adds positioned at expressway ramp merging area
The boundary of Fast Moving Vehicle Lane and main line outermost lane, undertakes the function of lane line between main line outermost lane and acceleration lane
Can, using junction of two streams as starting point, including spaced LED light group, the white space between the lamp group is equipped with white line, such as Fig. 2 institute
Show, be black when LED light group is standby, is white when work, when LED light group work, entity white line and working region
LED light group collectively constitutes solid white line, indicates that the vehicle of ring road not may span across the line of demarcation in lane in the same direction at this time, can only be in ring road
Inside continue to move forward；When LED light group is standby, LED light forms black, and entity white line and LED light group collectively constitute white void
Line, vehicle may span across line of demarcation in ring road at this time, import in main line outermost lane.
The characteristics of according to expressway ramp merging area acceleration lane and main line outermost lane, LED light group can be set to
2~4m of length, 0.2~0.4m of width, the length and width of the LED light group, the length of white line and width between adjacent LED lamp group
Degree can be identical, thus the white space between the LED light group for being spaced 2~4m, the white line of 0.2~0.4m of width is drawn, with LED light
Group collectively constitutes variable graticule, and the color difference between LED light group and entity white line can make graticule more prominent.
Meanwhile in order to extend the service life of interflow graticule, covering high-intensitive glass plate in LED light group surface guarantees foot
To bear biggish load, vehicle operation is facilitated to pass through；Surface can do concave-convex simultaneously, substrate add protrusion height be 5~
7mm enables to driver that can have obvious perception when vehicle crimping, improves the attention and concentrated force of driver,
Further ensure the safety at ring road interflow.
To alleviate vehicle by the friction of the seismaesthesia and road surface tire that occur when the graticule of interflow by difference in height, collaborate graticule
Outermost surface may be provided with anti-slip layer, the anti-slip layer has the approximate anti-skid factor of pavement of road, to guarantee antiskid
Property.
Embodiment 2
The present embodiment difference from example 1 is that：The LED light group at least constitutes a display unit, each
The work or standby of display unit independent choice, i.e., one of some ring road merging area of highway complete interflow graticule can be with
According to the autonomous working of each display unit, it is divided into partial white solid line or partial white dotted line, as shown in figure 3, with every two
A LED light group forms a display unit, it is assumed that each LED light group length is 3m, if the only LED light in first display unit
Lamp group is started to work, other lamp groups are standby, then occur just like the case where Fig. 3 state A, and having length is the lasting solid white line of 12m
Interflow graticule show, then merging area part not may span across lane in the same direction boundary line length be 12m, forbid in the part
Vehicle is via remittance main line wagon flow herein；If there is the LED light lamp group of continuous two display units to work at the same time, other lamp groups are standby
When, then just like occurring the case where state B in Fig. 3, having length is that the interflow graticule of the lasting solid white line of 24m is shown, then
It is 24m that merging area part, which not may span across lane line length in the same direction,；If the LED light group in whole complete interflow graticule is one
A display unit then has the case where state C in attached drawing 3 when this only display unit works, whole 36m's long
The interflow graticule for continuing solid white line occurs, and it is 36m, the i.e. section that merging area part, which not may span across lane line length in the same direction,
It can not collaborate.
Above-mentioned setting has not only fully considered the time variation of merging area main line and ring road traffic flow, according to the actual situation dynamic
The length for adjusting interflow graticule, has more complied with the driving habit of driver, prevents the uncertainty changed by graticule length dry
The judgement of driver is disturbed, guarantees the safety of wagon flow operation, suitable for the road type of different structure construction, flexibility is more preferable,
The scope of application is wider.
Embodiment 3
A kind of setting method of the variable interflow graticule of expressway ramp merging area, in actual use, when because of vehicle flowrate
Or speed limitation, do not allow in ring road vehicle interflow and fashionable, the setting emphasis for collaborating graticule is mainly white line and LED light group
The solid line total length of composition, i.e., how the length that not may span across solid white line theoretically determines, specific as follows：
Firstly, it is necessary to determine length needed for merging area vehicle accelerates to minimum interflow speed, calculation formula is as follows：
V in formulacFor the minimum interflow speed of merging area；vrFor ring road wagon flow average running speed；A is the gradient when being 0, and ring road is small
The average acceleration of automobile, generally takes 0.8~1.2m/s2；I is the gradient；G is acceleration of gravity.
Furthermore length needed for calculating the vehicle remittance stage, in the higher situation of flow, ring road vehicle needs to find can
Import gap import main line wagon flow, wait average time be：
In formulaFor the average latency；λ highway kerb lane vehicle arriving rate；α is interflow delay, is usually existed
2.5~3.5s generally takes 3s；τ is time headway, generally takes 1.0s.
Wherein, the calculation formula of main line kerb lane flow is：qr=160.969+0.326Q-0.105q, q in formularBased on
Flow on the outside of line, Q serve as theme the volume of traffic, and q is the ring road volume of traffic.
Then outside vehicle arriving rate is：
Then, the calculation formula the time required to vehicle adjustment parking stall is as follows：
So derive the vehicle remittance stage needed for calculating formula of length be：
When LED light group work, the solid line length l of white line and LED light group compositionl=la+lw, then theoretical not may span across
The calculating formula of length of lane line (solid white line) is：
Further, the method for arranging of the variable graticule of LED is as follows：
According to embodiment 2, it is assumed that each LED light group length is d=3m, and two lamp group intervals are also 3m, i.e. two lamp groups
Between white line length, then each lamp group can with white line form 6m long solid white line.Every k lamp group group is combined into one to show
Show unit, for different volume of traffic traffic flow running rates, then can be changed graticule part can show that length is 6k (unit：M), then
The calculation formula for needing the display unit of work is：
K is lamp group number in each unit in formula, and m is the display unit number for needing work,Expression takes upwards
It is whole.
By enumerating the combination of main line flow and ramp flow, all situations being likely to occur are enumerated, determine that is needed shows
Show unit number mmax, determine the LED light group number 2m for judging to need to be arrangedmax。
It is 80km/h, ring road wagon flow average running speed 60km/h, the gradient that main line wagon flow average running speed is taken in this example
Take 0, main line and ramp flow are then continuous variable, for k=2, in the situation known to main line and ring road average running speed
Under, it combines for the different volume of traffic of main line and ring road, for different the main line volume of traffic and ring road running velocity, determines
The display unit number m neededmax, determine the LED light group number 2m for judging to need to be arrangedmax, calculating needs are corresponding can
Become graticule state, while the threshold figure of available corresponding states, wherein main line flow, ring road wandering and variable graticule job note
For the curve graph of first number as shown in figure 4, horizontal axis is highway merging area main line partial discharge in Fig. 4, the longitudinal axis is ring road part
The magnitude of traffic flow, the corresponding variable graticule working cell number of vertical pivot, the 3 d image in figure are the relationship shown between three,
Generally speaking, the volume of traffic is bigger, and the length that not may span across lane line in the same direction is longer, corresponding variable graticule working cell
Quantity is also more, and Fig. 4 is projected on two-dimensional surface, then available mmax=5, then need to be arranged 10 LED light groups, it can
Become graticule total length as 60m, corresponding threshold figure is as shown in figure 5, horizontal axis is the shunting of highway merging area main line part in Fig. 5
Amount, the longitudinal axis are the ring road part magnitude of traffic flow, corresponding 5 regions in region, as For the illustrated example, to can be changed graticule working cell
Number (value of vertical pivot in corresponding diagram 4) can be intuitively from figure then known to the main line flow and ramp flow in situation
It is 2000pcu/h/lane, ramp flow 500pcu/h/ to the number of corresponding variable graticule working cell, such as main line flow
When lane, the intersection point of transverse and longitudinal axis falls in 4 regions, then 4 variable graticule working cells needs are in running order at this time, corresponding
The length that not may span across lane line in the same direction is 24m, in this area, vehicle is forbidden to import main line wagon flow.
Do not have the mandatory of physical isolation facility due to can be changed graticule, passes through the electronics being arranged on acceleration lane
It captures equipment monitoring and crosses over the vehicle of graticule in violation of rules and regulations, to improve the feasibility of driver, the electronic shooting equipment distance is gradually
Become 2~5m of section starting point, be 6~7m apart from ground free height, for capturing the vehicle violating the regulations crossed solid white line and import main line.
As shown in Figure 1, two detectors can also be increased：The detector 1：Main line flow and speed detector, are arranged in
Main line lane overhead within the scope of triangle zone graticule junction of two streams 10~20m of upstream is 6~7m apart from ground free height, for examining
Survey the flow and the speed of service of main line wagon flow；Detector 2：Main line flow and speed detector, be arranged in confluence nose downstream 5~
The overhead in ring road lane within the scope of 10m is 6~7m apart from ground free height, for detecting the flow and operation speed of ring road wagon flow
Degree,.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel only illustrate the present invention it should be appreciated that the present invention is not limited by examples detailed above described in examples detailed above and specification
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its is equal
Object defines.
Claims (10)
1. a kind of variable interflow graticule of expressway ramp merging area, is located at expressway ramp merging area acceleration lane and main line
The boundary in outermost lane, using junction of two streams as starting point, which is characterized in that including spaced LED light group, between the lamp group
White space be equipped with white line, when LED light group work, white line and LED light group collectively constitute solid white line；When LED light group waits for
When machine, white line and LED light group collectively constitute white dashed line.
2. the variable interflow graticule of a kind of expressway ramp merging area as described in claim 1, it is characterised in that：The LED
Lamp group at least constitutes a display unit, each display unit independent choice work or standby.
3. the variable interflow graticule of a kind of expressway ramp merging area as described in claim 1, it is characterised in that：The LED
The length and width of lamp group, between adjacent LED lamp group the length of white line with it is of same size.
4. a kind of setting method of the variable interflow graticule of expressway ramp merging area as described in claim 1, feature exist
In：When LED light group work, the solid line length l of white line and LED light group compositionl=la+lw, wherein laFor the acceleration of merging area vehicle
Length needed for minimum interflow speed, lwFor length needed for vehicle remittance process.
5. a kind of setting method of the variable interflow graticule of expressway ramp merging area as claimed in claim 4, feature exist
The length l needed for the merging area vehicle accelerates to minimum interflow speedaCalculation formula is as follows：
Wherein vcFor the minimum interflow speed of merging area；vrFor ring road wagon flow average running speed；A is the gradient when being 0 small vapour on ring road
The average acceleration of vehicle；I is the gradient；G is acceleration of gravity.
6. a kind of setting method of the variable interflow graticule of expressway ramp merging area as claimed in claim 4, feature exist
In length l needed for the vehicle remittance processwCalculation formula is：WhereinWhen finding interflow for vehicle
The waiting time of machine, ξ are that vehicle adjusts time required for parking stall, vmWagon flow of the serving as theme speed of service.
7. the variable interflow graticule setting method of a kind of expressway ramp merging area as claimed in claim 6, which is characterized in that
The waiting time calculation formula that the vehicle two finds interflow opportunity is as follows：
λ serves as theme outermost lane vehicle arriving rate in formula；qrOutermost of serving as theme lane flow；α is the interflow delay time at stop；τ is
Time headway；
Time calculation formula needed for vehicle adjustment parking stall is as follows：
8. a kind of setting method of the variable interflow graticule of expressway ramp merging area as claimed in claim 2, feature exist
In：Every k lamp group group is combined into a display unit, then the calculation formula of the display unit of work is needed to be shown below：
K is lamp group number in each unit in formula, and d is the length of single lamp group, and m is the display unit number for needing work.
9. a kind of setting method of the variable interflow graticule of expressway ramp merging area as claimed in claim 8, feature exist
In：If desired display unit number is mmax, then the LED light group number for needing to be arranged is 2mmax。
10. a kind of application of the variable interflow graticule of expressway ramp merging area as described in claims 1 or 2 or 3, feature
It is：The average running speed for determining main line and ring road is combined for the different volume of traffic of main line and ring road, and calculating needs to correspond to
Variable graticule state, obtain the threshold figure of corresponding states, put into application implementation.
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| CN201810857116.5A CN108842652B (en) | 2018-07-31 | 2018-07-31 | Variable confluence marking line of ramp confluence area of expressway and setting method thereof |
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| CN201810857116.5A CN108842652B (en) | 2018-07-31 | 2018-07-31 | Variable confluence marking line of ramp confluence area of expressway and setting method thereof |
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| CN111489569A (en) * | 2020-05-28 | 2020-08-04 | 兰州理工大学 | Dynamic adjusting system and adjusting method for lane width of interchange ramp |
| CN111785022A (en) * | 2020-07-13 | 2020-10-16 | 上海市城市建设设计研究总院（集团）有限公司 | Urban expressway main and auxiliary system traffic arrangement structure and control method |
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| CN112411284A (en) * | 2020-10-28 | 2021-02-26 | 张枫 | Highway section and highway |
| CN112885085A (en) * | 2021-01-15 | 2021-06-01 | 北京航空航天大学 | Confluence control strategy applied to reconstruction and extension of highway construction area |
| CN112991726A (en) * | 2021-02-08 | 2021-06-18 | 东南大学 | Method for setting road marking in urban expressway interweaving area |
| CN113897827A (en) * | 2021-10-29 | 2022-01-07 | 无锡市政设计研究院有限公司 | Structure of urban road traffic confluence |
| CN114446061A (en) * | 2022-02-10 | 2022-05-06 | 上海市城市建设设计研究总院（集团）有限公司 | Turnout type ramp confluence control device |
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| CN112885085A (en) * | 2021-01-15 | 2021-06-01 | 北京航空航天大学 | Confluence control strategy applied to reconstruction and extension of highway construction area |
| CN112991726A (en) * | 2021-02-08 | 2021-06-18 | 东南大学 | Method for setting road marking in urban expressway interweaving area |
| CN113897827A (en) * | 2021-10-29 | 2022-01-07 | 无锡市政设计研究院有限公司 | Structure of urban road traffic confluence |
| CN114446061A (en) * | 2022-02-10 | 2022-05-06 | 上海市城市建设设计研究总院（集团）有限公司 | Turnout type ramp confluence control device |
| CN114446061B (en) * | 2022-02-10 | 2024-01-05 | 上海市城市建设设计研究总院（集团）有限公司 | Switch type ramp converging control device |
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