The steering control method for traffic that arterial road and secondary road intersectTechnical field
The present invention relates to a kind of steering control method for traffic that utilizes the road median strip to carry out arterial road and secondary road intersection, relate to the technical field of urban traffic systems organization and management.
Background technology
Along with the China's economic fast development of society, people are also more and more higher to the requirement of traffic trip quality, and quick, convenient, safety is the expectation of each traveler, and the running status that road section traffic volume is good then is the basic guarantee of above-mentioned expectation.According to China " Code for planning design of transport on urban road ", urban road can be divided into 4 kinds of through street, arterial road, secondary trunk road and branch roads etc. according to the difference of grade, wherein through street and arterial road (major road) are mainly served the automobile traffic trip of middle and long distance, two-way motorway quantity is usually at the 6-8 bar, motor vehicle flow is big, and the through street should strictly be controlled and the at grade intersection of other grade road.And secondary trunk road and branch road (secondary road) are mainly served the trip of collecting and distributing property and discrepancy property automobile traffic, and two-way motorway quantity is usually at the 2-4 bar, and motor vehicle flow is less relatively.
When arterial road and secondary road (comprising secondary trunk road and branch road) when carrying out at grade intersection, the control method that adopts comprises usually: (1) secondary road slows down or Stop and give way; (2) arterial road are provided with continuous median strip, and secondary road is forbidden keeping straight on and turning left; (3) signal lamp control is adopted in the intersection.Although the preferential power of road that the 1st kind of method is clear and definite, but the complexity of intersection does not reduce, pertinent literature the analysis showed that, for typical two-way two track decussation mouths, its motor vehicles split point and junction of two streams respectively are 4, the vehicle conflict point is 8 (being produced by the craspedodrome of East and West direction wagon flow and north-south wagon flow and the intersection of turning left respectively), shunting and junction of two streams are less for the influence of traffic circulation state, and the quantity of conflict point has directly influenced the complexity of traffic circulation, and when the motorway number of cross way increases, conflict point quantity is with showed increased, be unfavorable for the traffic safety and the orderly function of intersection, in addition, when the arterial road wagon flow is a lot of and can't provide can insert the gap time, the craspedodrome of secondary road and the delay of left turn traffic will obviously increase.The 2nd kind of method provides effective control measure for the wagon flow even running on the arterial road, but the craspedodrome of secondary road wagon flow, left-hand rotation and arterial road turn left all to be subjected to strict restriction, and the very long distance that often will detour could realize its trip purpose.The 3rd kind of method turns to by the wagon flow of signal lamp control intersection, can effectively improve the traffic capacity of intersection, but this method is not strong to the compliance that wagon flow changes, and particularly when the less and secondary road wagon flow of arterial road wagon flow is big, will obviously increase the overall vehicle delay of intersection.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of steering control method for traffic that utilizes the road median strip to carry out arterial road and secondary road intersection, can when realizing that intersection all directions wagon flow turns to, obviously reduce the interference that secondary road produces the arterial road traffic circulation.
Technical scheme: the steering control method for traffic that utilizes the road median strip to carry out arterial road and secondary road intersection of the present invention, comprise arterial road, secondary road and formed intersection, by middle part the median strip is set at the intersection road, 2 motor vehicle turning special lanes, 2 motor vehicle tune special lanes are set respectively on the median strip again, and pedestrian and bicycle designated lane, and these passages are with the path connected of both sides, median strip.Concrete grammar is as follows:
Middle part at arterial road is provided with the median strip, on the median strip at secondary road place, be provided with the first turning special lane and the second turning special lane, on the median strip of secondary road both sides, be provided with the first tune special lane and the second tune special lane, on the median strip at secondary road place, be provided with pedestrian and bicycle designated lane, the first tune special lane and the second tune special lane are used to roll away from the left-hand rotation of the first motor-driven wagon flow of secondary road and the craspedodrome of the second motor-driven wagon flow, the first turning special lane and the second turning special lane are used for the turnpike road secondary road motor-driven wagon flow of turning left, keep straight on motor-driven wagon flow of secondary road turns left to enter secondary road, and pedestrian and bicycle designated lane are used for arterial road both sides pedestrian and non motorized vehicle turnover secondary road.
The width of described median strip is greater than 4 meters, distance between the first tune special lane and the second turning special lane is a 50-100 rice, distance between the second tune special lane and the first turning special lane is a 50-100 rice, and pedestrian and bicycle designated lane and the formed angle of arterial road horizontal direction are greater than 45 degree.
Beneficial effect: compared with prior art, the present invention has the following advantages:
Traffic circulation efficient and the reduction accident possibility occurrence of conventional method in order to increase arterial road and secondary road crossover location, the control method that is adopted comprises 3 kinds of technology mentioning in the technical background, promptly (1) secondary road slows down or Stop and give way; (2) arterial road are provided with continuous median strip, and secondary road is forbidden keeping straight on and turning left; (3) signal lamp control is adopted in the intersection.Compare with said method, the advantage that the present invention proposes control method comprises:
(1) when not adopting the control of intersection signal lamp, significantly reduced the quantity of intersection conflict point, traditional double will form 8 conflict points to two track right-angled intersections, adopt this control method, intersection conflict point quantity only is 2 (the arterial road East and West direction is kept straight on and turn left in the north-south) under the situation of equal track, can improve traffic circulation efficient well and reduce accident potential.
(2) the present invention provides an indirect left-hand rotation passage for forbidding the motor vehicles that arterial road left-hand rotation and secondary road are kept straight on, turned left.Be that vehicle desire that arterial road sail secondary road into is when turning left, can directly utilize the turning special lane to realize, and the motor vehicles desire of rolling secondary road away from is turned left and when keeping straight on, can first right lateral one segment distance, drive to then on another turning special lane, so just increased the convenience that the various motor-driven wagon flows in intersection are kept straight on and turned left.
(3) become higher present situation at Chinese pedestrian and non motorized vehicle traffic group ratio, the present invention also is provided with the pedestrian and non motorized vehicle designated lane in crossing, and require designated lane and the formed angle of arterial road horizontal direction greater than 45 degree, guarantee that pedestrian and non motorized vehicle spends the street time and be difficult for oversize.The interference this fixing when crossing the street passage and be arranged on the pedestrian and non motorized vehicle that ensures the arterial road both sides and can pass through smoothly, that pedestrian and non motorized vehicle is arbitrarily crossed roads randomly the arterial road motor vehicle is moved when also having eliminated no central partition on the highway section.
Description of drawings
Fig. 1 is a user mode schematic diagram of the present invention.
Have among the figure:arterial road 1,secondary road 2,median strip 3, the first turningspecial lane 4, the second turningspecial lane 5, the first tunespecial lane 6, the second tunespecial lane 7, pedestrian and bicycle designatedlane 8, secondary road motor-drivenwagon flow 9, secondary road motor-drivenwagon flow 10, first arterial road motor-drivenwagon flow 11 and the second arterial road motor-drivenwagon flow 12 of turning left of turning left of keeping straight on of turning left.
The specific embodiment
Examples of implementation in conjunction with the accompanying drawings, the present invention will be further described:
At the middle part ofarterial road 1median strip 3 is set, the motor vehicle first turningspecial lane 4, the second turningspecial lane 5, the first tunespecial lane 6, second tunespecial lane 7 and pedestrian and the bicycle designatedlane 8 are set again, with the path connected of 3 both sides, median strip onmedian strip 3; On themedian strip 3 atsecondary road 2 places, be provided with the first turningspecial lane 4, the second turningspecial lane 5, on themedian strip 3 ofsecondary road 2 both sides, be provided with the first tunespecial lane 6, the second tunespecial lane 7, on median strip,secondary road 2place 3, be provided with pedestrian and bicycle designatedlane 8, the first tunespecial lane 6, the secondary road that the second tunespecial lane 7 is used to roll away fromsecondary road 2 the turn left left-hand rotation of motor-drivenwagon flow 9 of the craspedodrome of motor-drivenwagon flow 10 and secondary road of keeping straight on, the first turningspecial lane 4, the second turningspecial lane 5 is used for the motor-drivenwagon flow 11 of arterial road and 12 and turns left to enter secondary road, and pedestrian and bicycle designatedlane 8 are used forarterial road 1 both sides pedestrian and non motorized vehicle turnover secondary road.The width of describedmedian strip 3 is greater than 4 meters, distance between the first tunespecial lane 6 and the second turningspecial lane 5 is a 50-100 rice, distance between the second tunespecial lane 7 and the first turningspecial lane 4 is a 50-100 rice, and pedestrian and bicycle designatedlane 8 are spent greater than 45 with the formed angle ofarterial road 1 horizontal direction.
The setting of road:
Step 1: the wagon flow of utilizing the road median strip to carry out arterial road and secondary road intersection turns to control, comprisearterial road 1 andsecondary road 2, be provided withmedian strip 3 at the middle part ofarterial road 1, the motor vehicle first tunespecial lane 6, the second tunespecial lane 7 are set onmedian strip 3, and the first tunespecial lane 6, the second tunespecial lane 7 be the path connected of 3 both sides, median strip, is used to roll away from secondary road the keep straight on craspedodrome of motor-drivenwagon flow 10 of the left-hand rotation of motor-drivenwagon flow 9 and secondary road of turning left.
Step 2: the motor vehicle first turningspecial lane 4, the second turningspecial lane 5 are set onmedian strip 3, and the first turningspecial lane 4, the second turningspecial lane 5 be the path connected of 3 both sides, median strip, is used for first arterial road motor-drivenwagon flow 11 and the second arterial road motor-drivenwagon flow 12 of turning left of turning left and turns left to enter secondary road.
Step 3: pedestrian and non motorized vehicle designatedlane 8 is set onmedian strip 3, is used forarterial road 1 both sides pedestrian and non motorized vehicle turnover secondary road.
Step 4: the width ofmedian strip 3 is greater than 4 meters, distance between the first tunespecial lane 6 and the second turningspecial lane 5 is a 50-100 rice, distance between the second tunespecial lane 7 and the first turningspecial lane 4 is a 50-100 rice, and pedestrian and bicycle designatedlane 8 are spent greater than 45 with the formed angle ofarterial road 1 horizontal direction.