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Highway Capacity and Level of Service最新文献

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Capacity and level of service by simulation – A case study of TRAF-NETSIM 通过模拟的服务容量和水平——以TRAF-NETSIM为例
Highway Capacity and Level of Service Pub Date : 1900-01-01 DOI: 10.1201/9780203751916-48
S. Wong
{"title":"Capacity and level of service by simulation – A case study of TRAF-NETSIM","authors":"S. Wong","doi":"10.1201/9780203751916-48","DOIUrl":"https://doi.org/10.1201/9780203751916-48","url":null,"abstract":"We explore the prospect of using TRAF-NETSIM, a microscopic simulation model, to estimate capacity and level of service through a case study. In the case study, we collected stopped delay, saturation flow, bus dwell time, double parking duration, vehicle and pedestrian volumes, etc. These data served as the bases to run and to calibrate the model, and to check the model results. Although TRAF-NETSIM does not provide capacity and level of service directly, we showed how to make use of its detail simulation capabilities and graphics to obtain capacity and level of service. We also showed how to calibrate the model to represent local traffic conditions. The simulated capacity, stopped delay and level of service were very close to the field results. Since TRAF-NETSIM is a stochastic model, there is concern that its results may vary. We examined its variability by inputting different random number seeds with different simulation times. We find that the variation of capacity was insignificant while that of stopped delay was mixed. We also examined the required number of runs and length of simulation times to obtain 95% level of confidence. TRAF-NETSIM has many advantages. Its animated and static graphics can show what is going on or how the result is derived. Its numerous calibrating parameters enable it to be applicable to many traffic conditions. It produces many statistics which are useful for other analyses. It considers individual factors as well as the interaction of different factors which may affect capacity and level of service. One can analyze the impacts of these factors on one intersection or on the network as a whole. The prospect of using a simulation model such as TRAF-NETSIM for capacity and level of service appears to be promising.","PeriodicalId":123979,"journal":{"name":"Highway Capacity and Level of Service","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126644381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Comparative analysis of major/minor priority intersection capacity methods 主次优先交叉口通行能力方法的比较分析
Highway Capacity and Level of Service Pub Date : 1900-01-01 DOI: 10.1201/9780203751916-40
M. Tracz, J. Chodur
{"title":"Comparative analysis of major/minor priority intersection capacity methods","authors":"M. Tracz, J. Chodur","doi":"10.1201/9780203751916-40","DOIUrl":"https://doi.org/10.1201/9780203751916-40","url":null,"abstract":"The primary objective of this study was the evaluation of some elements of a few methods currently available for capacity and traffic performance analysis at major/minor priority intersections. The comparison included the 1985 Highway Capacity Manual, the British method, the German method, and the Polish method. Special attention has been devoted to backgrounds, capacity factors included, impedance impact, and turning movements effects. Some possible sources of differences are also discussed.","PeriodicalId":123979,"journal":{"name":"Highway Capacity and Level of Service","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129198570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Simultaneous analysis of a signalized intersection 信号交叉口的同时分析
Highway Capacity and Level of Service Pub Date : 1900-01-01 DOI: 10.1201/9780203751916-29
H. Ozaki
{"title":"Simultaneous analysis of a signalized intersection","authors":"H. Ozaki","doi":"10.1201/9780203751916-29","DOIUrl":"https://doi.org/10.1201/9780203751916-29","url":null,"abstract":"","PeriodicalId":123979,"journal":{"name":"Highway Capacity and Level of Service","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131753735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impacts of smart signals on intersection capacity and level of service 智能信号对交叉口通行能力和服务水平的影响
Highway Capacity and Level of Service Pub Date : 1900-01-01 DOI: 10.1201/9780203751916-14
N. Gartner
{"title":"Impacts of smart signals on intersection capacity and level of service","authors":"N. Gartner","doi":"10.1201/9780203751916-14","DOIUrl":"https://doi.org/10.1201/9780203751916-14","url":null,"abstract":"The recent development of advanced (\"smart\") signal controllers has very significant impacts on the performance of signalized intersections. These controllers have distinct and novel operating characteristics, necessitating a new adaptation of our analysis methodologies to the developing technologies. In this paper the authors provide a preliminary analysis of the potential capacity and level-of-service implications of an OPAC-based controller. This type of controller employs advanced detection and optimization techniques and is highly adaptive. It provides a very efficient allocation of the right-of-way among the competing traffic streams at the intersection and substantially reduces operational delay.","PeriodicalId":123979,"journal":{"name":"Highway Capacity and Level of Service","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129213322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
German roads with intermediate cross-sections: Operations, flow and capacities 中间截面的德国道路:操作、流量和容量
Highway Capacity and Level of Service Pub Date : 1900-01-01 DOI: 10.1201/9780203751916-5
U. Brannolte
{"title":"German roads with intermediate cross-sections: Operations, flow and capacities","authors":"U. Brannolte","doi":"10.1201/9780203751916-5","DOIUrl":"https://doi.org/10.1201/9780203751916-5","url":null,"abstract":"Intermediate types of cross-sections for roads outside built-up areas are defined as types to classify between typical two-lane two-way roads and roads having full-size dual-carriageways. Often discussed are whether the quality of service on rural roads has become poor because of increased traffic loads and, in cases where these loads are not considered to be heavy enough, whether to provide standard cross-sections with dual-carriageways (motorways). The types of road having intermediate cross-sections can be categorized therefore as upgraded (widened) rural roads or as downgraded dual-carriageways (narrow or stripped). It is obvious that these types provide different capacities and especially different qualities of service. Summed-up results from several research projects using empirical data, theoretical valuation and microscopic simulation techniques are given concerning aspects of traffic operations, flows and capacities for different road types. Additionally, the criteria for provision, especially in German guidelines, of such kinds of roads are presented.","PeriodicalId":123979,"journal":{"name":"Highway Capacity and Level of Service","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115385813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Critical gap acceptance at two-way stop controlled intersections 双向停车控制交叉口的临界间隙接受
Highway Capacity and Level of Service Pub Date : 1900-01-01 DOI: 10.1201/9780203751916-23
B. Lall, K. Thayib, M. Kyte
{"title":"Critical gap acceptance at two-way stop controlled intersections","authors":"B. Lall, K. Thayib, M. Kyte","doi":"10.1201/9780203751916-23","DOIUrl":"https://doi.org/10.1201/9780203751916-23","url":null,"abstract":"Data for this study were collected at several two-way stop controlled intersections in the northwest region of the United States of America. The intersections were video taped during peak hours and the data were manually reduced from the video tapes. The flow from the minor street is recorded in terms of time stamps for such events as the vehicle joins the queue, as it becomes first in line and as it leaves the intersection. The flow on the major street is recorded with time stamps for each vehicle arriving at the intersection. These time stamps establish the basis of defining critical gaps accepted by the minor street motorists. This critical gap acceptance is compared to the recommended practice in different countries for this type of intersection. Volume of traffic on the major street is also examined with a view to relating it to the flow of traffic from the minor street. Together these volumes are compared with the suggested limiting traffic volumes justifying the study of this type of intersection. Arrival patterns on the major street are viewed in relation to theoretical concepts.","PeriodicalId":123979,"journal":{"name":"Highway Capacity and Level of Service","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122472153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New method of level of service estimation for two-lane rural roads in Poland 波兰农村双车道公路服务水平评估的新方法
Highway Capacity and Level of Service Pub Date : 1900-01-01 DOI: 10.1201/9780203751916-10
A. Cielecki
{"title":"New method of level of service estimation for two-lane rural roads in Poland","authors":"A. Cielecki","doi":"10.1201/9780203751916-10","DOIUrl":"https://doi.org/10.1201/9780203751916-10","url":null,"abstract":"Research on a new method for level of service estimation and assessment on long sections of two-lane two-directional rural roads in Poland is reported in the paper. Mean speed, its standard deviation, and 95th percentile of passenger car speed distribution have been chosen as level of service measures. Mathematical models to estimate their values were developed by means of factor analysis and multiple regression application. The models are expected to be useful for road planning and designing.","PeriodicalId":123979,"journal":{"name":"Highway Capacity and Level of Service","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130101589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Traffic operation on 2-lane roads in Hungary and the Netherlands 匈牙利和荷兰两车道道路的交通运行情况
Highway Capacity and Level of Service Pub Date : 1900-01-01 DOI: 10.1201/9780203751916-4
H. Botma, I. Fi
{"title":"Traffic operation on 2-lane roads in Hungary and the Netherlands","authors":"H. Botma, I. Fi","doi":"10.1201/9780203751916-4","DOIUrl":"https://doi.org/10.1201/9780203751916-4","url":null,"abstract":"Traffic operation at a number of two-lane rural roads in Hungary and the Netherlands has been investigated using the same methods for collecting and analysing the data. The aim is to find which factors influence the quality of the traffic stream and to construct models for the relations found. In doing so the agreements and differences between the two countries are determined and a comparison with the well known American Highway Capacity Manual is made. The investigations concentrate on: The effects of volume and vehicle composition on mean speed and platooning; The distribution of free speeds; The mathematical distributions that fit characteristics such as headways; Two methods to estimate the capacity of the road and its results.","PeriodicalId":123979,"journal":{"name":"Highway Capacity and Level of Service","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125780425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Urban arterial level-of-service evaluation method in Taiwan 台湾城市干道服务水平评价方法
Highway Capacity and Level of Service Pub Date : 1900-01-01 DOI: 10.1201/9780203751916-8
Seong Kyu Chang, S. T. Lung
{"title":"Urban arterial level-of-service evaluation method in Taiwan","authors":"Seong Kyu Chang, S. T. Lung","doi":"10.1201/9780203751916-8","DOIUrl":"https://doi.org/10.1201/9780203751916-8","url":null,"abstract":"The modifications to the arterial level of service (LOS) method in the 1985 Highway Capacity Manual (1985 HCM) for use in Taiwan are presented. Street conditions and traffic characteristics in Taiwan are different from those in the U.S., therefore the 1985 HCM can not directly be used in Taiwan without adjustments. Street segment, turning movement, travel time and delay, traffic signal spacing, and effects of motorcycles on free flow speed were investigated to calibrate quantitative measures for modifying the arterial classification method as well as the definitions of urban arterial and arterial LOS measures. It was shown that the modified arterial evaluation method meets the actual conditions of Taiwan urban arterials and that the approach and considerations in modifying the 1985 HCM provide other countries an example in applying the 1985 HCM method for their local conditions.","PeriodicalId":123979,"journal":{"name":"Highway Capacity and Level of Service","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123818167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Vehicle capacity at pedestrian crossings in the United Kingdom 英国人行横道的车辆通行能力
Highway Capacity and Level of Service Pub Date : 1900-01-01 DOI: 10.1201/9780203751916-18
J. Hunt, J. Griffiths
{"title":"Vehicle capacity at pedestrian crossings in the United Kingdom","authors":"J. Hunt, J. Griffiths","doi":"10.1201/9780203751916-18","DOIUrl":"https://doi.org/10.1201/9780203751916-18","url":null,"abstract":"The paper considers the operation of Zebra and Pelican crossings in the United Kingdom and the associated pedestrian and vehicle delays. The derivation of empirical relationships for saturation flow based on site observations at pedestrian crossings is described and it is shown that saturation flow depends on pedestrian flow and is substantially lower than at signal controlled junctions. Simulation programs are used to calculate vehicle capacity over a range of pedestrian flow for typical Zebra and Pelican crossings.","PeriodicalId":123979,"journal":{"name":"Highway Capacity and Level of Service","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122009523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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