CN109887291B - Traffic signal lamp setting requirement judgment method - Google Patents
Traffic signal lamp setting requirement judgment method Download PDFInfo
- Publication number
- CN109887291B CN109887291B CN201910269912.1A CN201910269912A CN109887291B CN 109887291 B CN109887291 B CN 109887291B CN 201910269912 A CN201910269912 A CN 201910269912A CN 109887291 B CN109887291 B CN 109887291B
- Authority
- CN
- China
- Prior art keywords
- road
- target area
- crossing
- pedestrian
- traffic signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Traffic Control Systems (AREA)
Abstract
The invention discloses a method for judging the setting requirement of a traffic signal lamp in the technical field of road traffic management and traffic safety, and aims to solve the technical problem that whether the traffic signal lamp needs to be set in regional road sections of schools, malls, hospitals and the like is not comprehensively judged according to road factors, flow factors and human factors in the prior art. The method comprises the following steps: surveying the road sections of the target area according to the preset survey period duration; extracting the characteristics of the road sections of the target area according to the investigation result of the road sections of the target area; acquiring an actual acceptable gap number threshold value of a road pedestrian and a street crossing flow threshold value of the road pedestrian according to the road section characteristics of the target area; and judging the traffic signal lamp setting requirement of the road section of the target area.
Description
Technical Field
The invention relates to a method for judging the setting requirement of a traffic signal lamp, belonging to the technical field of road traffic management and traffic safety.
Background
With the increasing quantity of motor vehicles, road congestion is increasingly serious, and particularly, safety hidden dangers are also endless in sections of schools, malls, hospitals and other areas during peak periods of personnel traveling. In the past, the practice of setting warning signs on road sections in related areas has been difficult to meet the actual requirements. The traffic signal lamps are reasonably arranged on the road sections of the relevant areas, so that the traffic signal lamps are beneficial to relieving road congestion of people in the peak time period of travel, the normal requirement that pedestrians pass through a road is met, and the traffic safety and smoothness of the road sections of the relevant areas are guaranteed.
The latest GB 14886-2016 road traffic light setting and installation Specification in China does not specifically specify the traffic light setting of the road sections in the relevant areas. Taking the section of a school area as an example, it is simply suggested that a traffic signal lamp can be arranged at a pedestrian crossing in front of a school door, and whether the traffic signal lamp needs to be arranged is not comprehensively judged according to road factors, flow factors and human factors. If the traffic signal lamp is improperly arranged, traffic safety and smoothness are greatly affected, and meanwhile, the traffic signal lamp cannot play a substantial role in relieving road congestion.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for judging the setting requirement of a traffic signal lamp, which comprises the following steps:
surveying the road sections of the target area according to the preset survey period duration;
extracting the characteristics of the road sections of the target area according to the investigation content of the road sections of the target area;
acquiring an actual acceptable gap number threshold value of a road pedestrian and a street crossing flow threshold value of the road pedestrian according to the road section characteristics of the target area;
and judging the traffic signal lamp setting requirement of the road section of the target area.
Further, the target area road segment characteristics include: the distance between a target area road section and an adjacent intersection;
the method for judging the setting requirement of the traffic signal lamp of the target area road section comprises the following steps:
comparing the distance between the road section of the target area and the adjacent intersection with a constant H;
and if the distance between the target area road section and the adjacent intersection is less than the constant H, judging that no traffic signal lamp is needed to be arranged on the target area road section.
Further, the constant H is 50 meters.
Further, the target area road segment characteristics further include: the investigation period duration of the target area road section;
if the distance between the target area road section and the adjacent intersection is not less than the constant H, the method for judging the setting requirement of the traffic signal lamp of the target area road section further comprises the following steps:
comparing the actual acceptable gap number threshold of the road passerby with the investigation period duration of the road section of the target area;
and if the threshold value of the number of the actually acceptable gaps of the road-crossing people is not more than the investigation period duration of the target area road section, judging that a traffic signal lamp needs to be arranged on the target area road section.
Further, the target area road segment characteristics further include: surveying the street traffic of the road-crossing people in the period duration;
if the actual acceptable gap number threshold of the road-crossing person is larger than the investigation period duration of the target area road section, the method for judging the setting requirement of the traffic signal lamp of the target area road section further comprises the following steps:
comparing the street crossing flow threshold of the road pedestrian with the street crossing flow of the road pedestrian in the investigation period duration;
if the street crossing traffic threshold value of the road crossing pedestrian is not larger than the street crossing traffic of the road crossing pedestrian in the investigation period duration, judging that a traffic signal lamp needs to be arranged on the road section of the target area;
and if the road pedestrian crossing flow threshold is larger than the road pedestrian crossing flow within the investigation period duration, judging that no traffic signal lamp is needed to be arranged on the target area road section.
Further, the survey content of the target area link includes: the distance between a target area road section and an adjacent intersection, the road width of the target area road section, the traffic flow in the investigation period duration, the average speed of vehicles, the length of the vehicles, the arrival rate of the vehicles, the road pedestrian crossing flow in the investigation period duration, the road pedestrian crossing time duration, the road pedestrian crossing start-up duration, the road pedestrian crossing speed, the road pedestrian crossing colony number and the road pedestrian colony interval duration.
Further, the threshold value N of the number of gaps which can be actually accepted by the road pedestrian0The calculation formula (2) includes:
N0＝Q×e-λτ，
wherein the content of the first and second substances,
wherein Q is the traffic flow in the investigation period duration, e is the base number of the natural logarithm, lambda is the vehicle arrival rate, N is the investigation period duration, tau is the actual acceptable gap of the road pedestrian, tau ismMinimum acceptable clearance for road travelers, vVehicle with wheelsIs the average speed of the vehicle, L is the length of the vehicle, w is the road width of the target area link, vStudy the designSpeed of walking for the road-crossing, tOpenerStarting time length for crossing street for pedestrians on road, n is the number of pedestrian groups crossing street, h is interval time length of pedestrian groups crossing street, and tiThe time for the road to cross the street is long.
Further, the street crossing flow threshold Q of the pedestrian on the road0The calculation formula (2) includes:
in the formula, N0The actual acceptable gap number threshold value is the threshold value of the road pedestrian, e is the base number of the natural logarithm, lambda is the vehicle arrival rate, and h is the interval duration of the road pedestrian group.
Further, the target area includes: schools, hospitals, markets, factories;
the corresponding road passerby includes: teachers and students who go in and out of schools, doctors and patients who go in and out of hospitals, customers who go in and out of shopping malls, and workers who go in and out of factory areas.
Further, the survey period for the target area segment includes: the road of the target area road section passes through the street at the peak time and the vehicle at the target area road section passes through the peak time.
Compared with the prior art, the invention has the following beneficial effects: the influence of road factors, flow factors and human factors on the setting of the traffic signal lamps in the sections of the crowd dense areas such as schools, malls and hospitals is comprehensively considered, the traffic signal lamp setting requirements are analyzed by utilizing the clearance acceptance theory, the traffic safety and the passing efficiency of personnel and vehicles are considered, the judgment efficiency and the precision are high, the method is simple and practical, and the operability is high.
Drawings
Fig. 1 is a flowchart of a method for determining a traffic signal lamp setting requirement in a school road segment according to an embodiment of the present invention;
fig. 2 is a schematic view of a student crossing street according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method for determining a traffic signal lamp setting requirement in a school road segment according to an embodiment of the present invention. The method comprises the following steps:
step S1: and selecting the section of the school area as a judgment object, and selecting the peak time period of school going to school and going to school for investigation.
The survey content includes: and acquiring the position, road, vehicle and student related information of the school area road section, and extracting corresponding characteristic parameters from the acquired information.
The position characteristic parameters include: the distance (unit: m) between the street crossing position of the student on the road section and the adjacent intersection;
the road characteristic parameters include: road width (unit: m);
the vehicle characteristic parameters include: the traffic flow (unit: vehicle), the average speed (unit: km/h), the length (unit: m) and the arrival rate (unit: pcu/s) of the vehicle in the period duration are investigated;
the student characteristic parameters comprise: the flow rate of the students crossing the street (unit: man), the time length of the students crossing the street (unit: s), the starting time length of the students crossing the street (unit: s), the walking speed of the students (unit: m/s), the group number of the students crossing the street (unit: one) and the interval time length of any two groups of the students crossing the street (unit: s) in the investigation period time length.
Step S2: considering the influence of the intersection functional area, combining with the GB 14886-2016 road traffic signal lamp setting and installation standard, judging whether the distance between the crossing position of the student on the road section and the adjacent intersection is less than 50m based on the position characteristics of the road section,
if the distance is less than 50m, judging that the road section does not need to be provided with a traffic signal lamp;
otherwise, the process continues to step S3.
Step S3: based on the gap acceptance theory, the data obtained by investigation in the step S1 is combined to calculate the threshold value N of the actually acceptable gap number of the student0And student cross street flow threshold Q0The specific steps are shown in steps S31 to S34:
step S31: establishing minimum acceptable gap tau for students based on characteristics of students and roadsmThe calculation model of (2) is as follows:
wherein w is the road width, vStudy the designThe walking speed of students, n is the number of groups of students crossing the street, h is the interval duration of any two groups of students crossing the street, tiFor the time of the student crossing the street, tOpenerStarting time for the students to cross the street; the student crosses street starting time tOpenerThe value is 3 s.
Step S32: minimum acceptable gap τ for students based on vehicle characteristicsmAnd adjusting to obtain a calculation model of the practical acceptable gap tau of the student as follows:
in the formula, vVehicle with wheelsIs the vehicle average speed, L is the vehicle length; the vehicle length L takes the value of 6 m.
Step S33: assuming that traffic flow of a school area road section is free flow and vehicles arrive according to Poisson distribution, an expression of 0 vehicle arriving in statistical time t is a negative exponential distribution function, and the probability density of the negative exponential distribution function is as follows:
f(t)＝λe-λt (3)
the distribution function expression is as follows:
F(x>t)＝e-λt (4)
in the formula, F (x > t) represents the probability that the arriving headway x is greater than t, e is the base number of a natural logarithm, and lambda is the vehicle arrival rate;
and (4) replacing t of the formula (4) with the student actual acceptable gap tau in the step S32, and calculating the probability accumulation of the occurrence of the locomotive time interval meeting the student actual acceptable gap size in the investigation period duration N (unit: min) by combining the traffic flow Q in the investigation period duration N (unit: min), namely the student actual acceptable gap number threshold N0The calculation model is as follows:
step S34: street crossing students are assumed to wait for vehicles to pass the primary road as the secondary road.
Fig. 2 is a schematic view of a student crossing street according to an embodiment of the present invention. When x students wait for crossing the street on the roadside, the vehicle headway satisfies:
τ+(x-1)h<H<τ+xh (6)
because the headway time is distributed according to the negative index, the student crossing flow threshold Q is obtained under the condition that the headway time is larger than the actual acceptable clearance0The calculation model of (a) is:
the following calculation formula is obtained after arrangement:
step S4: threshold the number of practically acceptable gaps N0Comparing with the investigation period duration N;
if N is present0If the number of the road sections is less than or equal to N, judging that the road sections need to be provided with traffic signal lamps, and proposing suggestions to traffic management departments according to the needs;
otherwise, the process continues to step S5.
Step S5: crossing the street with the student0The flow Q of the student crossing the street within the duration N of the investigation periodStudy the designComparing;
if Q is0≤QStudy the designJudging that the road section needs to be provided with a traffic signal lamp, and proposing a suggestion to a traffic management department according to the judgment;
otherwise, the road section is judged to be not required to be provided with the traffic signal lamp.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A method for judging the setting requirement of a traffic signal lamp is characterized by comprising the following steps:
surveying the road sections of the target area according to the preset survey period duration;
extracting the characteristics of the road sections of the target area according to the investigation content of the road sections of the target area;
acquiring an actual acceptable gap number threshold value of a road pedestrian and a street crossing flow threshold value of the road pedestrian according to the road section characteristics of the target area;
judging the traffic signal lamp setting requirement of the road section of the target area;
the survey content of the target area road segment comprises: the distance between a target area road section and an adjacent intersection, the road width of the target area road section, the traffic flow in the investigation period duration, the average speed of vehicles, the length of the vehicles, the arrival rate of the vehicles, the road pedestrian crossing flow in the investigation period duration, the road pedestrian crossing time duration, the road pedestrian crossing start-up duration, the road pedestrian crossing speed, the road pedestrian crossing colony number and the road pedestrian colony interval duration;
the street crossing flow threshold Q of the pedestrian on the road0The calculation formula (2) includes:
in the formula, N0The actual acceptable gap number threshold value is the threshold value of the road pedestrian, e is the base number of the natural logarithm, lambda is the vehicle arrival rate, and h is the interval duration of the road pedestrian group.
2. The traffic signal lamp setting demand determination method according to claim 1, wherein the target area section feature includes: the distance between a target area road section and an adjacent intersection;
the method for judging the setting requirement of the traffic signal lamp of the target area road section comprises the following steps:
comparing the distance between the road section of the target area and the adjacent intersection with a constant H;
and if the distance between the target area road section and the adjacent intersection is less than the constant H, judging that no traffic signal lamp is needed to be arranged on the target area road section.
3. The method as claimed in claim 2, wherein the constant H is 50 m.
4. The traffic signal lamp setting demand determination method according to claim 2, wherein the target area section feature further includes: the investigation period duration of the target area road section;
if the distance between the target area road section and the adjacent intersection is not less than the constant H, the method for judging the setting requirement of the traffic signal lamp of the target area road section further comprises the following steps:
comparing the actual acceptable gap number threshold of the road passerby with the investigation period duration of the road section of the target area;
and if the threshold value of the number of the actually acceptable gaps of the road-crossing people is not more than the investigation period duration of the target area road section, judging that a traffic signal lamp needs to be arranged on the target area road section.
5. The method for determining a traffic signal setting requirement as claimed in claim 4, wherein the target area section feature further comprises: surveying the street traffic of the road-crossing people in the period duration;
if the actual acceptable gap number threshold of the road-crossing person is larger than the investigation period duration of the target area road section, the method for judging the setting requirement of the traffic signal lamp of the target area road section further comprises the following steps:
comparing the street crossing flow threshold of the road pedestrian with the street crossing flow of the road pedestrian in the investigation period duration;
if the street crossing traffic threshold value of the road crossing pedestrian is not larger than the street crossing traffic of the road crossing pedestrian in the investigation period duration, judging that a traffic signal lamp needs to be arranged on the road section of the target area;
and if the road pedestrian crossing flow threshold is larger than the road pedestrian crossing flow within the investigation period duration, judging that no traffic signal lamp is needed to be arranged on the target area road section.
6. The method as claimed in claim 1, wherein the threshold N is the threshold of the number of gaps that can be actually accepted by the pedestrian on the road0The calculation formula (2) includes:
N0＝Q×e-λτ，
wherein the content of the first and second substances,
wherein Q is the traffic flow in the investigation period duration, e is the base number of the natural logarithm, lambda is the vehicle arrival rate, N is the investigation period duration, tau is the actual acceptable gap of the road pedestrian, tau ismMinimum acceptable clearance for road travelers, vVehicle with wheelsIs the average speed of the vehicle, L is the length of the vehicle, w is the road width of the target area link, vStudy the designSpeed of walking for the road-crossing, tOpenerStarting time length for crossing street for pedestrians on road, n is the number of pedestrian groups crossing street, h is interval time length of pedestrian groups crossing street, and tiThe time for the road to cross the street is long.
7. The traffic signal light setting requirement determining method according to any one of claims 1 to 5, wherein the target area includes: schools, hospitals, markets, factories;
the corresponding road passerby includes: teachers and students who go in and out of schools, doctors and patients who go in and out of hospitals, customers who go in and out of shopping malls, and workers who go in and out of factory areas.
8. The traffic signal light setting requirement determining method according to any one of claims 1 to 5, wherein the investigation period of the target area section includes: the road of the target area road section passes through the street at the peak time and the vehicle at the target area road section passes through the peak time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910269912.1A CN109887291B (en) | 2019-04-04 | 2019-04-04 | Traffic signal lamp setting requirement judgment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910269912.1A CN109887291B (en) | 2019-04-04 | 2019-04-04 | Traffic signal lamp setting requirement judgment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109887291A CN109887291A (en) | 2019-06-14 |
| CN109887291B true CN109887291B (en) | 2021-06-08 |
Family
ID=66936087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910269912.1A Active CN109887291B (en) | 2019-04-04 | 2019-04-04 | Traffic signal lamp setting requirement judgment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109887291B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879975B (en) * | 2019-11-06 | 2022-06-17 | 杭州宇泛智能科技有限公司 | Personnel flow detection method and device and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819719A (en) * | 2010-04-09 | 2010-09-01 | 北京工业大学 | Method for setting initial green light time based on pedestrian and bicycle group |
| CN103489318A (en) * | 2013-09-04 | 2014-01-01 | 河海大学 | Intersection motor vehicle signal light setting requirement judgment method |
| CN103632535A (en) * | 2013-11-19 | 2014-03-12 | 河海大学 | Judgment method for section pedestrian crossing signal lamp arrangement |
| KR101683012B1 (en) * | 2016-06-15 | 2016-12-08 | (주)세이프업 | Crosswalk pedestrian safety system using voice guidance and Method thereof |
| CN109035780A (en) * | 2018-09-07 | 2018-12-18 | 江苏智通交通科技有限公司 | The Optimal Configuration Method in section is incuded when signal controlled junctions phase is green |
-
2019
- 2019-04-04 CN CN201910269912.1A patent/CN109887291B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819719A (en) * | 2010-04-09 | 2010-09-01 | 北京工业大学 | Method for setting initial green light time based on pedestrian and bicycle group |
| CN103489318A (en) * | 2013-09-04 | 2014-01-01 | 河海大学 | Intersection motor vehicle signal light setting requirement judgment method |
| CN103632535A (en) * | 2013-11-19 | 2014-03-12 | 河海大学 | Judgment method for section pedestrian crossing signal lamp arrangement |
| KR101683012B1 (en) * | 2016-06-15 | 2016-12-08 | (주)세이프업 | Crosswalk pedestrian safety system using voice guidance and Method thereof |
| CN109035780A (en) * | 2018-09-07 | 2018-12-18 | 江苏智通交通科技有限公司 | The Optimal Configuration Method in section is incuded when signal controlled junctions phase is green |
Non-Patent Citations (4)
| Title |
|---|
| Critical traffic volume warrant of signal installing at equal weight intersections;Ma dongfang Et al.;《2011 Fourth International Conference on Intelligent Computation Technology and Automation》;20110415;第388-391页 * |
| Modelling Gap Acceptance Behavior of Two-Wheelers at Uncontrolled Intersection Using Neuro-Fuzzy;Jayant P.Sangole Et al.;《Procedia-Social and Behavioral Sciences》;20111231;第20卷;第927-941页 * |
| 信号交叉口人行横道处的行人可接受间隙研究;孙智勇等;《公路交通科技》;20041130;第21卷(第11期);第102-104页 * |
| 路段行人过街信号设置方法及实例研究;顾金刚;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》;20110515(第5期);C034-129 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109887291A (en) | 2019-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | Day-of-the-week variations and temporal instability of factors influencing pedestrian injury severity in pedestrian-vehicle crashes: A random parameters logit approach with heterogeneity in means and variances | |
| Forbes et al. | Methods and practices for setting speed limits: An informational report | |
| Kang et al. | Statistical analysis of pedestrian perceptions of sidewalk level of service in the presence of bicycles | |
| US20190266891A1 (en) | A method to quantitatively analyze the effects of urban built environment on road travel time | |
| Ha et al. | Analysis of traffic hazard intensity: A spatial epidemiology case study of urban pedestrians | |
| CN109887291B (en) | Traffic signal lamp setting requirement judgment method | |
| CN103942952A (en) | Assessment method for road network function gradation state grades | |
| Wang et al. | Integrating before and after crash features into measuring the effectiveness of intersection safety improvement project in Harbin | |
| Jrew et al. | Strategic development of transportation demand management in Jordan | |
| Gan et al. | Advanced traveler information system for metropolitan expressways in Shanghai, China | |
| Ivan et al. | The spatio-temporal distribution of road accidents in Cluj-Napoca | |
| CN111008578B (en) | Video file data value evaluation method | |
| Qiao et al. | Reducing the impact of speed dispersion on subway corridor flow | |
| Mutune et al. | Factors that influence the incidences of road accidents in Kenya: A survey of black spots along Mombasa-Malaba road | |
| Hu et al. | Injury severity analysis of electric bike crashes in Changsha, Hunan Province: taking different lighting conditions into consideration | |
| Abdel-Aty et al. | Exploring the influence of drivers’ visual surroundings on speeding behavior | |
| Sangole | Intelligent transport system-Study of intelligent transportation systems for urban transport planning | |
| Ourania Skandami et al. | Choosing footbridge or signalized crossing in an urban area: what triggers pedestrians? | |
| Ilgaz et al. | A Case Study on Speed Behavior Determination Via Average Speed Enforcement at The Akdeniz University Campus Area | |
| Adanikin et al. | TRAFFIC CONGESTION ASSESSMENT OF AKURE CENTRAL BUSINESS DISTRICT USING GEOGRAPHIC INFORMATION SYSTEM (GIS) | |
| Gao et al. | A Data-Driven and Integrated Evaluation of Area-wide Impacts of Double Parking Using Macroscopic and Microscopic Models | |
| Wang et al. | How are vehicles running in underground expressways? | |
| Isa et al. | VEHICLE–PEDESTRIAN CONFLICT: A CASE STUDY IN UNIVERSITI PUTRA MALAYSIA | |
| Figliozzi et al. | Update to Methodology for Setting Speed Limits in Urban Areas: SPR 827 | |
| Pham | Motorway Traffic Risks Identification Model-MyTRIM Methodology and Application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |