CN1542225A - Traffic lane setting method and traffic control organization at signal crossing - Google Patents
Traffic lane setting method and traffic control organization at signal crossing Download PDFInfo
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Abstract
The present invention is technological scheme used in organizing city traffic, and aims at raising the traffic ability in crossroad via overcoming the demerit of left turning. One special left turning lane for the left turning vehicle is set from certain distance to the crossroad, across the central line of lane and straight exit lane and with exit lane between the straight exit lane and the right turning exit lane. There are right turning and straight entrance lane, straight exit lane, left turning entrance lane and right turning and left turning exit lane successively arranged from right to left in the direction to the crossroad. Vehicles run in separated lanes under traffic lamps, and the said scheme can raise the traffic ability in crossroad by 20-30 %.
Description
(1) technical field under
The technical program is to be applied to urban traffic organizational technology field
The technical program is that argumentation is organized in the traffic of the countries and regions of keeping to the right by vehicle, if the signalized intersections traffic organization of the countries and regions that vehicle is kept to the left adopts the technical program just " left side " that all are mentioned in the technical program to be changed into " right side ", " right side " changes " left side " into, intersection straightgoing vehicle inlet (being the intersection straightgoing vehicle section of sailing into) is changed into the left side of sailing on the direction of intersection at the roadway center line, intersection straightgoing vehicle outlet (being the intersection straightgoing vehicle section of rolling away from) is changed into and is sailed on the direction of intersection on the right side of roadway center line left-hand bend into, the right-hand bend that the setting of right-hand bend dedicated Lanes and traffic organization thereof are discussed according to the technical program, the setting of left turn lane and traffic organization technology thereof are adjusted accordingly.
(2) background technology
At present, no matter be medium, metropolis, still built up the megalopolis of city expressway, light rail, subway, the signalized intersections traffic organization is all accounting for important status in the urban traffic tissue.The signalized intersections traffic organization gets fine or not, and what directly influence urban traffic organizes level, managerial ability and the service ability of urban road system.To main signalized intersections, when carrying out traffic organization, all the left turn lane is arranged between intersection direct lane and the roadway center line at present, what have extends the center, intersection of approaching to special-purpose left turn lane, so that left turning vehicle can pass through the intersection apace when signal lamp transfers green light to, (annotate: vehicle sails the intersection section into and is called " intersection entrance " to locate the left turn lane tissue of large-scale signalized intersections as people market, center, Chengdu, Sichuan Province, vehicle rolls the intersection section away from and is called " intersection exit ", intersection entrance cited below, outlet is implication for this reason all).As if left turning vehicle is to pass through the intersection in the time that is green light to straightgoing vehicle, with the straightgoing vehicle that heads on traffic conflict is arranged when turning owing to left turning vehicle, and left turning vehicle can influence or have a strong impact on the straightgoing vehicle traffic; When the left-hand bend magnitude of traffic flow is big, just need the left rotaring signal lamp to be set specially for the left-hand bend wagon flow, but because left turning vehicle can take the more signal lamp time when turning, even increase the left turn lane number, intersection capacity also can reduce along with the increase of the left-hand bend magnitude of traffic flow.When the intersection magnitude of traffic flow increases to a certain degree, because left turning vehicle exists important disadvantages (with the straightgoing vehicle that heads on conflict point to be arranged during turning when turning, turning radius is little, speed is slow, turning time is long), even increase the intersection area, increase craspedodrome or left turn lane number and can not correspondingly increase the design capacity of intersection, therefore also have only by enlarging intersection land used and set up interchange viaduct or half interchange viaduct transport solution problem.But problem is to set up the fund that interchange viaduct or half interchange viaduct not only will spend the thousands of units of number, takies a large amount of soils, and devaluation also will be made a price reduction near the business of the commerce intersection room, paving.How to solve this difficult problem, this patent provides a kind of investment very little and practicable solutions.
(3) summary of the invention
The intersection traffic flow is divided into inlet traffic flow (promptly sailing the traffic flow of intersection into) and outlet traffic flow (promptly leaving the traffic flow of intersection), the inlet traffic flow comprises the traffic flow of right-hand bend car inlet, the traffic flow of straightgoing vehicle inlet, the traffic flow of left turning vehicle inlet, and the outlet traffic flow comprises left turning vehicle outlet traffic flow, straightgoing vehicle outlet traffic flow, right-hand bend car outlet traffic flow.Traditional intersection traffic organization is organized according to keeping to the right, entrance lane is arranged on the right (to sail the intersection direction calculating into) of roadway center line, exit lane is arranged on the left side (to sail the intersection direction calculating into) of roadway center line, promptly the roadway set-up mode from right to left (to sail the intersection direction calculating into) be followed successively by: right-hand bend car entrance lane, straightgoing vehicle entrance lane, left turning vehicle entrance lane, exit lane (comprising left turning vehicle, straightgoing vehicle and right-hand bend car exit lane).Left turning vehicle exit lane, straightgoing vehicle exit lane and right-hand bend car exit lane can be used with when organizing traffic by keeping to the right certainly, can not show in the intersection.In order to improve the traffic capacity of intersection, overcome the shortcoming that left turning vehicle exists when turning, avoid left turning vehicle when turning, to clash or save green time to the left turning vehicle specific assigned with straightgoing vehicle head-on, in the megalopolis, the signalized intersections that metropolis and medium major trunk roads and major trunk roads intersect, the signalized intersections that signalized intersections that major trunk roads and subsidiary road intersect and subsidiary road and subsidiary road intersect, sail a distance, intersection at left turning vehicle and begin to be provided with one section special-purpose left turn lane, cross over roadway center line and craspedodrome exit lane then, between intersection craspedodrome exit lane and right-hand rotation exit lane, special-purpose left turn lane is set, inlet, the outlet roadway is provided with order and is followed successively by from right to left to sail the intersection direction calculating into: right-hand bend entrance lane (one or several or use with direct lane), craspedodrome entrance lane (one or several), craspedodrome exit lane (one or several), left-hand bend entrance lane (one or several), left-hand bend exit lane (one or several or use with the right-hand bend exit lane), right-hand bend exit lane (one or several); When being subjected to the road conditions restriction, if the craspedodrome entrance lane is less, can be the right-hand bend entrance lane as the inlet and the inlet all-purpose road of keeping straight on of turning right; If the left turning vehicle outlet traffic and the right-hand bend car outlet traffic volume are less or be subjected to the intersection condition restriction, can merge into one to left turning vehicle exit lane and right-hand bend car exit lane.Right-hand bend wagon flow, craspedodrome wagon flow, left-hand bend wagon flow under the control of intersection signal lamp according to separately lanes; Head-on the straightgoing vehicle traffic is in the red interval on the highway section, allow left turning vehicle cross road axis and straightgoing vehicle exit lane in advance, sail into then in the left-hand bend entrance lane that is arranged between straightgoing vehicle exit lane and the right-hand bend car exit lane in the crossing section of sailing into; When left-hand bend wagon flow signal lamp was green light, the vehicle that sails in the left-hand bend entrance lane that is arranged between craspedodrome exit lane and the right-hand bend exit lane just can directly turn left to leave the intersection.
Anterior position in that the left-hand bend wagon flow is crossed over the roadway center line from the intersection section of sailing into is provided with left-hand bend wagon flow signal lamp, clashes to avoid exporting traffic with the straightgoing vehicle that heads on.
Intersection left turning vehicle diatom enter the mouth from the track outlet should be provided with complete so that the driver discerns easily.
In order to improve intersection capacity, in intersection certain limit (such as 50 meters), can remove the isolation strip between motorway and the nonmotorized vehicle lane on the one hand, increase the number of track-lines of intersection entrance and outlet as far as possible, sail in the intersection, delimit a roadway as the right-turn lane on the nonmotorized vehicle lane of the section of rolling away from; Can save intersection sidewalk kerb on the other hand or reduce sidewalk kerb height, make bicycle steadily, successfully to utilize the sidewalk to leave the intersection, enlarge the design capacity of intersection indirectly.
Lane width is determined: according to the urban road design manual, " when the auxiliary lane line is established in the intersection, the width of direct lane can by 3.25 (large car)～3.0 (compact car) rice constriction to 3.0 (large car)～2.75 meter (compact car) ".When adopting the technical program, need consider that to the intersection section of rolling away from lane width vehicle has 15～40 kilometers factors of safety such as the speed of service, when craspedodrome exit lane or left-hand bend entrance lane or right-hand bend exit lane have only one, 3.25 (large cars) rice is adopted in the lane width suggestion, when being suggestion employing 3.25 (large car)～3.0 meter (compact car) when (containing 2) more than two; In the intersection section of sailing into, every direct lane adopts 3.0 (large car)～2.75 meter (compact car).
The principle of the technical program is: head-on the straightgoing vehicle traffic is in the red interval on the highway section, allow left turning vehicle cross roadway center line and straightgoing vehicle exit lane in advance, sail into then in the left-hand bend entrance lane that is arranged between straightgoing vehicle exit lane and the right-hand bend car exit lane in the crossing section of sailing into; When left-hand bend wagon flow signal lamp was green light, the vehicle that sails on the special-purpose left-hand bend entrance lane just can directly turn left to leave the intersection, had avoided clashing with the outlet straightgoing vehicle, and the left turning vehicle and the straightgoing vehicle conflict point that heads on are eliminated outside the intersection.In the time of during head-on straight-going traffic is green light, left turning vehicle in the intersection section of sailing into can not be crossed the roadway center line, can only on the left turn lane between straightgoing vehicle entrance lane and the roadway center line, do short stay on this wagon flow direction, avoid and export the craspedodrome wagon flow clashing.
The scope of application of the technical program:
Motorway separates with nonmotorized vehicle lane or does not have the bicycle traffic substantially, the two-way signalized intersections that intersects in two arterial highways that (contain 4 tracks) more than 4 of motorway.
It is the crossing signalized intersections in arterial highway in 6 tracks above (containing 6 tracks) that the technical program is specially adapted to motorway two-way, and the track is many more practical more.
The feasibility that the technical program is implemented:
The two big factors that influence the technical program feasibility have two, and the one, whether the intersection motorway is widened feasible, and the 2nd, safety whether during vehicle '.
1. the intersection motorway is widened feasibility: to two-way be the signalized intersections that intersect two arterial highways in 4 tracks (not containing nonmotorized vehicle lane), the motorway width is generally 14～15 meters, on the arterial highway, also have nonmotorized vehicle lane, bicycle and motor vehicle isolation strip, also have the sidewalk more than 4 meters in addition; If adopt this technical scheme, can 5 tracks be set altogether at intersection entrance and outlet, (to sail the intersection direction calculating into) is followed successively by from right to left: 1 right-hand rotation, 3.0 meters of craspedodrome all-purpose roads, article 1, the craspedodrome entrance lane is 3.0 meters, article 1, the straightgoing vehicle exit lane is 3.25 meters, article 1, left turning vehicle entrance lane 3.25, article 1, turn left to export, turn right and export 3.25 meters of all-purpose roads, article 5, the track beam overall is about 15.75 meters, only Duo 0.75～1.75 meter than former motorway, utilize isolation strip or nonmotorized vehicle lane and sidewalk between motorway and the nonmotorized vehicle lane, it is fully feasible that motorway is widened 0.75～1.75 meter.Certainly,,, can remove the isolation strip between nonmotorized vehicle lane and the motorway, increase the number of track-lines of intersection entrance and outlet as far as possible in intersection certain limit (such as 50 meters) in order to improve intersection capacity.In the intersection to two-way be the signalized intersections that intersect two arterial highways in 6 tracks (not containing nonmotorized vehicle lane), the motorway width is generally 21～22 meters; If adopt this technical scheme, can 7 tracks be set altogether in the intersection section of sailing into and the section of rolling away from, (to sail the intersection direction calculating into) is followed successively by from right to left: 3.0 meters of right-hand rotation, craspedodrome all-purpose roads, article two, the direct lane width is a 2*3.0 rice, article 2, export direct lane 2*3.0 rice, article one, the left turning vehicle entrance lane is 3.25 meters,, 3.25 meters of a left turning vehicle outlet, right-hand rotation outlet all-purpose roads, article 7, the track beam overall is about 21.5 meters, and therefore utilizing the technical program in the intersection is complete feasibility.As long as separate with nonmotorized vehicle lane or do not have the non-vehicle flow traffic substantially so satisfy motorway, and the two-way signalized intersections that intersects in two arterial highways that (contain 4, but do not contain nonmotorized vehicle lane) more than 4 of motorway, all can use the technical program.
2. safety during vehicle ': the technical program left-hand bend wagon flow and right-hand bend wagon flow are to travel according to separately roadway, controlled by signal lamp, and left turning vehicle stream does not have conflict point with the wagon flow of head-on keeping straight on during by the intersection; The left-hand bend wagon flow through roadway center line and straightgoing vehicle exit lane, during to the special use left-hand bend entrance lane between straightgoing vehicle and the right-hand bend car section of rolling away from, does not have conflict point from entering the intersection section of sailing into yet under signal lamp control; The width that each bar track is provided with has all been considered the safe spacing factor, so vehicle ' is safer.When signal lamp has a power failure, bigger as the magnitude of traffic flow, such as in the vehicle flowrate peak period, the left-hand bend wagon flow can be subjected to Artificial Control, as the magnitude of traffic flow hour, such as at night, implement in 2 years in the technical program, but the special-purpose left turn lane of temporary close is implemented after 2 years, since driver habit this left-hand bend technology and Traffic Organization thereof, needn't not close special-purpose left turn lane even have a power failure when having signal lamp at night yet.
The beneficial effect of the technical program is:
1. the left turning vehicle and the straightgoing vehicle conflict point that heads on are eliminated on the intersection section of sailing into outside the intersection and the section of rolling away from, simplified the signalized intersections traffic organization, make intersection traffic flow ordering more.
Since the left-hand bend vehicle of the technical program through signalized intersections the time with head-on export straightgoing vehicle and do not have conflict point, do not influence the straightgoing vehicle traffic, therefore simplified the signalized intersections traffic organization, make intersection traffic flow ordering more simultaneously.
2. need only the land used conditions permit, increase craspedodrome, left-hand rotation, the right-turn lane number of intersection, the design flow of intersection direction just can be ratio ground to be increased.
Because the left-hand bend vehicle of the technical program does not have conflict point with the straightgoing vehicle that heads on through signalized intersections the time, the left-hand bend wagon flow is to the not influence of wagon flow of head-on keeping straight on, therefore extend the left turn lane number, signalized intersections left-hand bend design capacity will be ratio in the increase multiple of left turn lane number to be increased: enlarging direct lane number, and signalized intersections straightgoing vehicle design capacity will be ratio in the increase multiple of direct lane number to be increased; Enlarging right-turn lane number, signalized intersections right-hand bend design capacity will be ratio in the increase multiple of right-turn lane number to be increased; Extend craspedodrome, left-hand rotation, right-turn lane number simultaneously, the intersection automotive designs traffic capacity correspondingly increases.
Utilize this advantage, when intersection autos only amount surpasses the design capacity of intersection, just can be by cost expense seldom, the number of track-lines on enlarging intersection and the highway section thereof, but with regard to the transport solution problem.
3. raising Capacity Analysis for Signalized Intersection.
Can improve the saturated traffic capacity of signalized intersections 20%～30%.Utilize the urban traffic theory to be proved below.
The saturated traffic capacity N in planed signal intersection
LThe geometrical condition and the transportation condition that depend on road intersection, i.e. the saturated traffic capacity N of import
iObtain by various corrections back by the theoretical saturated traffic capacity of each import.
In the formula: N
LThe saturated traffic capacity of-import (craspedodrome car equivalent/hour)
h
t-entrance driveway saturation headway (second), car are 2.671 seconds;
r
iThe entrance driveway bicycle of-i import influences correction factor (vertically disturbing);
b
iThe entrance driveway bicycle of-i import influences correction factor (laterally disturbing);
n
iThe number of track-lines of-i import;
η
iThe wide correction factor in the track of-i import;
t
iEffective transit time ratio of-i import, desirable split;
p
iPedestrian's interference effect correction factor of-i import.
Lane width correction factor η
iWith the pass of lane width w be:
η
i=50 (w-1.5) * 10
-2, (w≤3.5 meter)
η
i=(54+188w/3-16w
2/ 3) * 10
-2, (w＞3.5 meter)
Width is set in the track, intersection is generally 3.0～3.25 meters, be i.e. lane width correction factor η
iBe 0.75～0.875, for ease of calculating η
iGet 0.8
Under the situation that does not have bicycle and pedestrian to disturb, r in the promptly above-mentioned formula
i=1, b
i=1, p
i=1, lane width correction factor η
iGet 0.8, the saturated traffic capacity N of import
LFor:
At this moment, the saturated traffic capacity N of import
LNumber of track-lines n with right-hand bend car, straightgoing vehicle and left turning vehicle
iWith split t
iRelevant.According to the research of Britain, consider lane function, for the left-hand rotation dedicated Lanes, 1 left turning vehicle is equivalent to 1.5 equivalent straightgoing vehicles: the straight or straight right runway that mixes in a left side for a left side, 1 left turning vehicle is equivalent to 3.0 equivalent straightgoing vehicles; For the right-hand rotation dedicated Lanes, 1 right-hand bend car is equivalent to 1.0 equivalent straightgoing vehicles; For the straight right runway that mixes in the straight right side or a left side, 1 right-hand bend car is equivalent to 1.2 equivalent straightgoing vehicles.
Suppose to have crossing " ten " font level-crossing in two road of the same terms, it imports and exports number of track-lines is 7, according to the logical organizational form of conventional cross oral sex, its import track is provided with from right to left, and (to sail the intersection direction calculating into) is followed successively by: 1 special-purpose right-turn lane, 2 direct lanes, 1 special-purpose left turn lane, the exit lane number is 3, under the situation that does not have bicycle and pedestrian to disturb, lane width correction factor η
iGet 0.8, a signal lamp cycle was got 120 seconds, the straightgoing vehicle green time that is provided with is 45 seconds, special-purpose left turning vehicle green time is 24 seconds, yellow time is got 3*2 second, and right-hand bend car green time can be 120 seconds, but is subjected to the influence of other intersections, the effective green time of right-hand bend car is about 55 seconds, and the car green time of therefore turning right calculated by 55 seconds.Then the saturated traffic capacity of this crossing inlet is calculated as:
Ni＝4*(0.8*((3600/2.671)*2*45/120+(3600/2.671)*1*55/120+(3600/2.671)*1*24/120/1.5)
=5786 (craspedodrome car equivalent/hour)
In the formula: 0.8* (3600/2.671) * 2*45/120 is the saturated traffic capacity of two import direct lanes;
0.8* (3600/2.671) * 1*55/120 is the saturated traffic capacity (being scaled the saturated traffic capacity of direct lane) of 1 import right-turn lane;
0.8* (3600/2.671) * 1*24/120/1.5 is the saturated traffic capacity (being scaled the saturated traffic capacity of direct lane) of 1 import left turn lane
If by this intersection Traffic Organization, be intersection entrance track, exit lane setting from right to left (to sail the intersection direction calculating into) be followed successively by: 1 right-hand bend car entrance lane, 2 straightgoing vehicle entrance lanes, 2 straightgoing vehicle exit lanes, 1 left turning vehicle entrance lane, 1 left turning vehicle and right-hand bend car are used exit lane with, under the situation that does not have bicycle and pedestrian to disturb, lane width correction factor η
iGet 0.8, one signal lamp cycle and got 120 seconds, the straightgoing vehicle green time of setting is 58 seconds, and special-purpose left turning vehicle green time is 58 seconds, and special-purpose right-hand bend car green time is 58 seconds, and yellow time is got 4*1 second, and special-purpose right-hand bend car green time is 120 seconds.Then the saturated traffic capacity of this crossing inlet is calculated as:
Ni＝4*(0.8*((3600/2.671)*2*58/120+(3600/2.671)*1*58/120+(3600/2.671)*1*58/120/1.5)
=7643 (craspedodrome car equivalent/hour)
In the formula: 0.8* (3600/2.671) * 2*58/120 is the saturated traffic capacity of two import direct lanes;
0.8* (3600/2.671) * 1*58/120 is the saturated traffic capacity (being scaled the saturated traffic capacity of direct lane) of 1 import right-turn lane;
0.8* (3600/2.671) * 1*58/120/1.5 is the saturated traffic capacity (being scaled the saturated traffic capacity of direct lane) of 1 import left turn lane
Can learn thus: with this intersection traffic organization method than traditional traffic organization method increase more 7643-5786=1857 craspedodrome car equivalent/hour, the saturated traffic capacity in intersection increases
1857/5786*100％＝32.1％
Even under the situation that has partially self car and pedestrian to disturb, adopt this traffic organization method also to increase the saturated traffic capacity and reach 20%～30% than traditional traffic organization method.
4. economic worth is remarkable.
To using each signalized intersections design capacity of this programme,, can improve 20%～30% the saturated traffic capacity with respect to traditional intersection Traffic Organization.Calculate by the saturated traffic capacity that increases by 20%, the annual direct economic benefit that produces in each intersection is Duoed more than 500,000 yuan than the economic benefit that traditional intersection Traffic Organization produces, if in the downtown area, the direct economic benefit of generation is nearly more than ten million yuan.
Can save several and even tens expenses of setting up overpass bridge aspect the approach system investment to megalopolis, metropolis, be equivalent to save the investment of more than one hundred million units.
(4) below in conjunction with drawings and Examples the technical program is further specified.
Fig. 1, Fig. 2, Fig. 3 are that motorway is that two crossing tracks, planed signal intersection of major trunk roads with 6 tracks are provided with and the traffic organization form.Be provided with 7 altogether in the intersection section of sailing into, the section of rolling away from track, (to sail the intersection direction calculating into) is followed successively by from right to left: a special-purpose right-hand bend entrance lane, two craspedodrome entrance lanes, two straightgoing vehicle exit lanes, a special-purpose left-hand bend entrance lane, a left-hand bend right-hand bend exit lane; Wherein Fig. 1 is the intersection overall process is left in special-purpose left turn lane through the intersection and the section of rolling away from from the intersection section of sailing into track setting and a Traffic Organization thereof; Fig. 2, Fig. 3 be to be the former heart with the center, intersection, the figure that Fig. 1 has been amplified; Fig. 4 sails, rolls away from left-hand rotation on the highway section, right-hand rotation, straight-going traffic into to organize figure in the intersection, so that more clearly see the content of Fig. 1.
Fig. 5, Fig. 6, Fig. 7 are that motorway is that two crossing signalized intersections tracks of major trunk roads with 4 tracks are provided with and the traffic organization form.Be provided with 5 altogether in the intersection section of sailing into, the section of rolling away from track, (to sail the intersection direction calculating into) is followed successively by from right to left: turn right and keep straight on mixed line entry track, a craspedodrome entrance lane, a straightgoing vehicle exit lane, a special-purpose left-hand bend entrance lane, a left-hand bend right-hand bend exit lane; Wherein Fig. 5 is the intersection overall process is left in special-purpose left turn lane through the intersection and the section of rolling away from from the intersection section of sailing into track setting and a Traffic Organization thereof, Fig. 6, Fig. 7 are to be the former heart with the center, intersection, the figure that Fig. 5 has been amplified is so that more clearly see the content of Fig. 5.
Fig. 8, Fig. 9 are that motorway is the crossing signalized intersections left-hand bend setting and the traffic organization form thereof of two major trunk roads in 4 tracks.Utilize isolation strip and nonmotorized vehicle lane between motor vehicle and the bicycle, the intersection section of sailing into, the section of rolling away from track are provided with 7 tracks altogether, (to sail the intersection direction calculating into) is followed successively by from right to left: a right-hand rotation entrance lane, two craspedodrome entrance lanes,, straightgoing vehicle exit lane, a special-purpose left-hand bend entrance lane, a left-hand bend exit lane, a right-hand bend exit lane; Fig. 8 is the intersection overall process is left in special-purpose left turn lane through the intersection and the section of rolling away from from the intersection section of sailing into track setting and a Traffic Organization thereof, Fig. 9 is to be the former heart with the center, intersection, the figure that Fig. 7 has been amplified is so that more clearly see the content of Fig. 8.
Among the figure: 1. intersection entrance, 2. intersection exit, 3. sidewalk, 4. nonmotorized vehicle lane, 5. bus stop, the car stop line that 6. turns left, 7. left rotaring signal lamp, 8. lane line transition section, 9. special-purpose left turn lane, 10. greening lawn, roadway center line.
Claims (1)
1. technical characterictic:
At signalized intersections, sail a distance, intersection at left turning vehicle and begin to be provided with one section special-purpose left turn lane, cross over roadway center line and craspedodrome exit lane then, between intersection craspedodrome exit lane and right-hand rotation exit lane, special-purpose left turn lane is set, inlet, the outlet roadway is provided with order and is followed successively by from right to left to sail the intersection direction calculating into: right-hand bend entrance lane (one or several or with keep straight on to mix use), craspedodrome entrance lane (one or several), craspedodrome exit lane (one or several), left-hand bend entrance lane (one or several), left-hand bend exit lane (one or several), right-hand bend exit lane (one or several or merge to use with the left-hand bend exit lane), the restriction of blocking the way travel permit spare, the craspedodrome entrance lane is less, the right-hand bend entrance lane can be used by straightgoing vehicle, and left-hand bend exit lane and right-hand bend exit lane can be merged into one.Head-on the straightgoing vehicle traffic is in the red interval on the highway section, allows left turning vehicle cross road axis and craspedodrome exit lane in advance, enters in the special use left-hand bend entrance lane between craspedodrome exit lane and right-hand bend exit lane; When craspedodrome wagon flow signal lamp is green light, the vehicle that enters in the left-hand bend entrance lane between craspedodrome exit lane and right-hand bend exit lane just can directly turn left to leave the intersection, avoided clashing, the left turning vehicle and the straightgoing vehicle conflict point that heads on have been eliminated on the highway section outside the intersection with the outlet straightgoing vehicle.
Protection domain;
Motorway is two-way at two that (contain 4 tracks) more than 4 or many signalized intersections that intersect the arterial highway, as long as adopt planed signal intersection track set-up mode and traffic control thereof with the technical program feature to organize the scope that all belongs to this rights protection.
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2003
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