CN103646374A - Method for calculating ground bus transit comfort index - Google Patents

Abstract

The invention relates to a method for calculating a ground bus transit comfort index. The method is characterized by comprising the following steps: by taking the average velocity speed and the section passenger flow at each station in each network as the minimal units, and taking the section passenger flow as a weight, calculating the average line network speed (sic) of the network aiming at each level of network of the ground bus; calculating the comfort index (sij) of the network through the corresponding relationship of the network speed and the comfort index; finally, carrying out weighted calculation by taking the passenger capacities of a fast line network and a common line network, so as to obtain the speed index of the ground bus network. The bus comfort index disclosed by the invention is real-time, quantitative to calculate, and universal for space-time. The method is suitable for evaluation of a random region, can perform real-time calculation in time, and also can perform long-term data calculation.

Description

A kind of ground public transport operation comfortableness index calculation method

Technical field

The present invention relates to belong to a kind of ground public transport operation comfortableness index calculation method.

Background technology

Ground public transport is the important component part of Traffic Systems, accurately, to evaluate ground public transport running status be the urgent current demand of Urban Traffic Planning, organization and management for quantification ground, is also to realize the basis that public traffic information service is provided towards the public.

Carry out the research that more relevant ground public transport operation is evaluated both at home and abroad, also formed more achievement.Foreign study mainly concentrates on the aspects such as factor analysis, survey plan design and quantitative evaluation of urban public traffic network optimization, bus rapid transit BRT system, transit quality of service.Aspect the research of public transport assessment indicator system, mainly concentrate on the aspects such as service level, operation benefits, passenger's satisfaction and reliability of public transportation system.As: 1974, Botzow proposed corresponding index system and evaluation method for the trip service quality of san francisco, usa city public transportation system.1986, Bent Flyvbjerg etc. discussed the evaluation method for permanent haulage line public transit system.1997, the Nakanishi at state university's traffic study center, USA New York set up the Public Transport Service index evaluation of programme towards passenger to New York public transport; 1999, Transportation Research Board was studied for the evaluation criterion of public bus network.It has mainly proposed a plurality of public bus network evaluation indexes from five aspects such as layout of roads, frequency, economic benefit, service accessibility, the comfortable safety of passenger; 2000, Chung-Hsing Yeh etc. used Multi-Objective Fuzzy Decision analytical approach, from security, comfortableness, convenience, enterprise operation and five aspects of social responsibility, have set up assessment indicator system.The domestic starting of the research about public transport is evening relatively, but along with first developing the foundation of development strategy of urban public traffic, the public transport evaluation of China causes people's attention gradually, and more and more many experts and scholars start to pay close attention to public transport evaluation problem, and achievement in research also continues to bring out.The research of evaluating for conventional public transit system, mainly concentrates on the development model of public transit system, the evaluation of the aspects such as the service level of city bus, operational effect and level, public transport operation and reliability of service, public transport station.Aspect city bus assessment indicator system, domestic main research comprises:

Calendar year 2001, the Wang Jianzhi of Jilin University be take the on-site investigation of Changchun Development of Public Transport and is basis in its Master's thesis, from three aspects :s such as public transport service level, social benefit, economic benefits, start with, with single index and overall target, constructed respectively the assessment indicator system of Urban Public Transport system.2002, the Wang Wei of Southeast China University proposed the assessment indicator system of urban public tranlport system and the computing method of evaluation index.2003, application fuzzy mathematics method, set up Mathematical Evaluation model, has provided a kind of fuzzy evaluation method of evaluating public transport situation.2006, the Chen Mingwei of Southwest Jiaotong University utilized analytical hierarchy process and Fuzzy Synthetic Evaluation method, has set up the model of fuzzy synthetic evaluation in conjunction with analytical hierarchy process.2009, Chen Xumei Deng Yi Beijing public transport operation feature of Beijing Jiaotong University was that public transport reliability of service evaluation mistake has been analysed in depth on basis! Do not find Reference source.。2010, the Yang Xiaoguang of Tongji University etc. inquired into the trip characteristic of bus passenger and basic behavior thereof, decision-making in-depth rule, take be worth, energy consumption is basic dimensions with information, proposed the three-dimensional system framework of evaluation public transport operation service quality.

For now, there are the following problems for domestic and international existing method:

(1) external research lays particular emphasis on the evaluation of service level or passenger's satisfaction aspect of public transport, and conventional index has: average travelling speed, through coefficient, service frequency, punctuality rate, bus station covering rate, travel time, load factor, mean delay, main line spacing, vehicle cleaning degree etc.;

(2) domestic research lays particular emphasis on the research to public transportation system assessment indicator system more, and evaluation criteria system has been contained the various aspects of public transport substantially, specifically comprises operation conditions, service level, social benefit, economic benefit etc.; Evaluation content Government Decision Oriented, public service, enterprise operation, evaluation method adopts modern integrated evaluating method more, evaluation method combining as fuzzy evaluation, step analysis, cluster analysis and several different methods etc.

Along with the development in epoch, there is huge variation in the basic data condition of ground public transport collection, especially public transport electronic charging data and GPS locator data.In new data qualification, original evaluation method is not exclusively applicable, in other words, by new method, the precision of evaluation, scope can be increased substantially.

In addition, the current index for public transport comfortableness is still less, is difficult to realize quantitative description and the evaluation of and comfortableness convenient to public transport.

Summary of the invention

In order to overcome above difficult point, the present invention proposes a kind of ground public transport operation comfortableness index calculation method, can obtain ground public transport charge data, GPD locator data based on the modern times, foundation is for ground public transport running comfort evaluation index and computing method, Evaluation threshold, realization is to the quantification of ground public transport running comfort situation, dynamic Real-Time Evaluation, for ground bus trip person, traffic administration person provide the evaluation service about public transport comfortableness.

In order to realize above-mentioned target, the present invention adopts following technical scheme:

A ground public transport operation comfortableness index calculation method, is characterized in that: step is as follows:

For each level network of ground public transport, average speed and the section volume of the flow of passengers between each station in each network of take is least unit, take the section volume of the flow of passengers as weight, calculates the average line net spee (si of this network _c); And by the corresponding relation of this network speed and comfortableness index, calculate the comfortableness index (si of this network _j); Finally with fast gauze and the general gauze volume of passenger traffic, be weighted, draw the fast sex index of ground public traffic network.

As a kind of improved technical scheme, public transport operation comfortableness index (si _comfort): be the quantitative evaluation index to ground public transportation system comfortableness level in service, index span is [0,10], and numerical value is larger, and comfortableness is poorer.

As a kind of improved technical scheme, its computing method are as follows:

1) rate of the having a full house situation during according to dissimilar vehicle quota, is divided into 3 classes by all ground public transit vehicle:

Type one: quota is had a full house rate for [1,1.7], and vehicle is larger, and on operating line, the volume of the flow of passengers is less;

Type two: quota have a full house rate for (1.7,3.0], conventional vehicle, on operating line, the volume of the flow of passengers is larger;

Type three: quota have a full house rate for (3.0,10], this vehicle is generally the vehicle of articulator, three car doors, length of line operated is longer;

2) calculate the average comfort level si of j type circuit _cj:

${\mathrm{si}}_{\mathrm{cj}}=\underset{i=1}{\overset{i=n}{\mathrm{\Σ}}}\frac{Q_i*l_i}{{\mathrm{\Σ}}_i{Q}_i*l_i}*(1-\frac{Q_i}{C_i})$

Wherein: the total seating capacity of bus of Ci representative station section i, the section volume of the flow of passengers of Qi representative station section i, the mileage of li representative station section i, the passenger person-kilometres of the product representative station section i of Qi and li;

3) determine the comfortableness grade classification threshold value of the type vehicle:

For each grade road network, its running comfort index all can be divided into Pyatyi, adopts based on real data cumulative distribution, then, according to the method for fractile contrast Comfort Evaluation perception understanding, the Evaluation threshold of each class public transport network is identified.

Usefulness of the present invention is: the present invention is based on the modern times can obtain ground public transport charge data, GPD locator data, foundation is for ground public transport running comfort evaluation index and computing method, Evaluation threshold, realization is to the quantification of ground public transport running comfort situation, dynamic Real-Time Evaluation, for ground bus trip person, traffic administration person provide the evaluation service about public transport comfortableness.The public transport comfortableness index that the present invention proposes has in real time, quantitatively calculates the feature that space-time is pervasive.In the evaluation that is applicable to arbitrary region, in time, can carry out real-time calculating and also can carry out the calculating of long term data.

Accompanying drawing explanation

Fig. 1 is one week changing trend diagram of special 8 inner and outer rings public transport operation comfortableness indexes;

One week changing trend diagram of Tu2Shi 605 road uplink and downlink public transport operation comfortableness indexes;

Change figure when Fig. 3 is the index of one week comfortableness index of gauze in two rings.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is done to concrete introduction.

A ground public transport operation comfortableness index calculation method, step is as follows:

Public transport operation comfortableness index (si _comfort): be the quantitative evaluation index to ground public transportation system comfortableness level in service, index span is [0,10], and numerical value is larger, and comfortableness is poorer.For each level network of ground public transport, average speed and the section volume of the flow of passengers between each station in each network of take is least unit, take the section volume of the flow of passengers as weight, calculates the average line net spee (si of this network _c); And by the corresponding relation of this network speed and comfortableness index, calculate the comfortableness index (si of this network _j); Finally with fast gauze and the general gauze volume of passenger traffic, be weighted, draw the fast sex index of ground public traffic network.

In the present embodiment, its computing method are as follows:

1) rate of the having a full house situation during according to dissimilar vehicle quota, is divided into 3 classes by all ground public transit vehicle:

Type one: quota is had a full house rate for [1,1.7], and vehicle is larger, and on operating line, the volume of the flow of passengers is less;

Type two: quota have a full house rate for (1.7,3.0], conventional vehicle, on operating line, the volume of the flow of passengers is larger;

Type three: quota have a full house rate for (3.0,10], this vehicle is generally the vehicle of articulator, three car doors, length of line operated is longer.

2) calculate the average comfort level si of j type circuit _cj:

${\mathrm{si}}_{\mathrm{cj}}=\underset{i=1}{\overset{i=n}{\mathrm{\Σ}}}\frac{Q_i*l_i}{{\mathrm{\Σ}}_i{Q}_i*l_i}*(1-\frac{Q_i}{C_i})$

Wherein: the total seating capacity of bus of Ci representative station section i, the section volume of the flow of passengers of Qi representative station section i, the mileage of li representative station section i, the passenger person-kilometres of the product representative station section i of Qi and li.

3) determine the comfortableness grade classification threshold value of the type vehicle.

For each grade road network, its running comfort index all can be divided into Pyatyi, and table 1 is as follows:

The concrete distribution table of table 1 running comfort index

Employing, based on real data cumulative distribution, then, according to the method for fractile contrast Comfort Evaluation perception understanding, is identified the Evaluation threshold of each class public transport network.

In the present embodiment, take in Beijing two ring road network has made explanation as example.

In 2013 two rings, the real data of road network be basis, and Negotiation speed is interval to distribute and the corresponding relation of comfortableness perception, draws the evaluation criterion of different brackets ground public traffic network comfortableness index.

The threshold speed interval division that table 2 circuit comfortableness at different levels index is corresponding

Note: ground public transport in corresponding 2013 Beijing's two rings of this threshold value table, in different cities, zones of different, different period, this Evaluation threshold standard should be demarcated with local conditions.

3) the comfortableness index of each type of vehicle calculates

Adopt piecewise linear function form, according to the corresponding relation of average velocity and comfortableness index, calculate the comfortableness index of each grade road network.

Cable release public transport operation comfortableness index calculation method:

${\mathrm{SI}}_j=\left\{\begin{array}{cc}10-2*\frac{{\mathrm{si}}_{\mathrm{cj}}}{V_1-V_0}& {\mathrm{si}}_k\&Element;[V_0,V_1]\\ 8-2*\frac{{\mathrm{si}}_{\mathrm{cj}}-V_1}{V_2-V_1}& {\mathrm{si}}_k\&Element;[V_1,V_2]\\ 6-2*\frac{{\mathrm{si}}_{\mathrm{cj}}-V_2}{V_3-{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000447404360000011.png,HDA0000447404360000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}& {\mathrm{si}}_k\&Element;[{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="HDA0000447404360000011.png,HDA0000447404360000021.png"\; state="\{\{state\}\}">V</figure-callout>}}_2,V_3]\\ 4-2*\frac{{\mathrm{si}}_{\mathrm{cj}}-V_3}{V_4-V_3}& {\mathrm{si}}_k\&Element;[V_3,V_4]\\ 2-2*\frac{{\mathrm{si}}_{\mathrm{cj}}-{\mathrm{<figure-callout\; id="4"\; label="V"\; filenames="HDA0000447404360000011.png"\; state="\{\{state\}\}">V</figure-callout>}}_4}{1-{\mathrm{<figure-callout\; id="4"\; label="V"\; filenames="HDA0000447404360000011.png"\; state="\{\{state\}\}">V</figure-callout>}}_4}& {\mathrm{si}}_k\&Element;[{\mathrm{<figure-callout\; id="4"\; label="V"\; filenames="HDA0000447404360000011.png"\; state="\{\{state\}\}">V</figure-callout>}}_4,1_{}]\\ 10& {\mathrm{si}}_k<V_0\end{array}\right.$

In formula, SI _jthe running comfort index of------j type of vehicle;

4) the comfortableness index of public traffic network calculates

The volume of passenger traffic of each hierarchical network of take is weight, the comprehensive quick index of computational grid.

Computing method are as follows:

${\mathrm{SI}}_{\mathrm{comfort}}=\mathrm{\&Sigma;}\frac{Q_j*{\mathrm{SI}}_j}{\mathrm{\&Sigma;}{Q}_j}$

In formula, Q _jtotal seating capacity of------j type of vehicle

According to above-mentioned concrete embodiment, selecting special 8,605 tunnel public transport in Beijing is that example has been made explanation, Fig. 1 is one week changing trend diagram of special 8 inner and outer rings public transport operation comfortableness indexes, one week changing trend diagram of Tu2Shi 605 road uplink and downlink public transport operation comfortableness indexes; Change figure when Fig. 3 is the index of one week comfortableness index of gauze in two rings.

It should be noted that, above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.

Claims (3)

1. a ground public transport operation comfortableness index calculation method, is characterized in that: step is as follows:

For each level network of ground public transport, average speed and the section volume of the flow of passengers between each station in each network of take is least unit, take the section volume of the flow of passengers as weight, calculates the average line net spee (si of this network _c); And by the corresponding relation of this network speed and comfortableness index, calculate the comfortableness index (si of this network _j); Finally with fast gauze and the general gauze volume of passenger traffic, be weighted, draw the fast sex index of ground public traffic network.

2. according to the ground public transport operation comfortableness index calculation method described in claim 1, it is characterized in that: public transport operation comfortableness index (si _comfort): be the quantitative evaluation index to ground public transportation system comfortableness level in service, index span is [0,10], and numerical value is larger, and comfortableness is poorer.

3. according to the ground public transport operation comfortableness index calculation method described in claim 1, it is characterized in that: its computing method are as follows:

1) rate of the having a full house situation during according to dissimilar vehicle quota, is divided into 3 classes by all ground public transit vehicle:

Type one: quota is had a full house rate for [1,1.7], and vehicle is larger, and on operating line, the volume of the flow of passengers is less;

Type two: quota have a full house rate for (1.7,3.0], conventional vehicle, on operating line, the volume of the flow of passengers is larger;

Type three: quota have a full house rate for (3.0,10], this vehicle is generally the vehicle of articulator, three car doors, length of line operated is longer;

2) calculate the average comfort level si of j type circuit _cj:

${\mathrm{si}}_{\mathrm{cj}}=\underset{i=1}{\overset{i=n}{\mathrm{\&Sigma;}}}\frac{Q_i*l_i}{{\mathrm{\&Sigma;}}_i{Q}_i*l_i}*(1-\frac{Q_i}{C_i})$

Wherein: the total seating capacity of bus of Ci representative station section i, the section volume of the flow of passengers of Qi representative station section i, the mileage of li representative station section i, the passenger person-kilometres of the product representative station section i of Qi and li;

3) determine the comfortableness grade classification threshold value of the type vehicle:

For each grade road network, its running comfort index all can be divided into Pyatyi, adopts based on real data cumulative distribution, then, according to the method for fractile contrast Comfort Evaluation perception understanding, the Evaluation threshold of each class public transport network is identified.

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