EP1110195A2 - Procede de surveillance du trafic et de regulation de la circulation des vehicules dans un reseau routier - Google Patents

Procede de surveillance du trafic et de regulation de la circulation des vehicules dans un reseau routier

Info

Publication number
EP1110195A2
EP1110195A2 EP99941527A EP99941527A EP1110195A2 EP 1110195 A2 EP1110195 A2 EP 1110195A2 EP 99941527 A EP99941527 A EP 99941527A EP 99941527 A EP99941527 A EP 99941527A EP 1110195 A2 EP1110195 A2 EP 1110195A2
Authority
EP
European Patent Office
Prior art keywords
traffic
synchronized
free
upstream
phase transition
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.)
Granted
Application number
EP99941527A
Other languages
German (de)
English (en)
Other versions
EP1110195B1 (fr
Inventor
Boris Kerner
Hubert Rehborn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1110195A2 publication Critical patent/EP1110195A2/fr
Application granted granted Critical
Publication of EP1110195B1 publication Critical patent/EP1110195B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions

Definitions

  • the conditions are specifically queried to identify the phase transition to synchronized traffic, firstly, whether the average speed is decreasing, secondly, the traffic flow is above a predefinable flow threshold value, and thirdly, the quotient of the change in the average speed divided by the traffic flow changes tion exceeds a predefinable threshold.
  • the latter condition takes advantage of the knowledge that when moving from free to synchronized traffic, the average speed decreases relatively quickly and significantly, while the flow of traffic shows no such major change.
  • a monitoring method developed according to claim 4 the duration of a synchronized traffic state upstream of an access or by an actually detected phase transition from free to synchronized traffic is determined Departure predicted by special, suitable criteria.
  • access is also to be understood in a broader sense as a narrow point at which the number of lanes is reduced.
  • a monitoring method developed according to claim 5 allows a prediction of the spatial extent of such an induced synchronized traffic state on the basis of corresponding criteria.
  • FIG. 1 shows a schematic block diagram of a three-lane highway section with a plurality of monitoring points spaced apart from one another for traffic condition monitoring and
  • a prognosis forecast is to be understood here which is based on empirical data on the traffic condition likely to be expected at the relevant location at the relevant time.
  • the speed v gr of the downstream traffic flank can also be determined and used as the characteristic empirical value of any street.
  • the speed values v gr , v gl of the downstream or upstream accumulation flank can also be determined directly using a curve method.
  • the traffic flow q t2 is recorded at time t2 and checked whether it is greater than a predetermined flow threshold value q G. Furthermore, in contrast to the above method, the difference dq ti , the traffic volume values q t ⁇ , q t2 at the two measurement cycle times tl, t2, and then the quotient dv ti , t2 / dq t ⁇ , t2 of the difference dv t ⁇ , t 2 of the average speeds divided by the difference dq t ⁇ , t 2 of the associated traffic flows.
  • a prognosis of the duration and / or spatial extent of a synchronized traffic state can be made after detection of a corresponding phase transition from free to synchronized traffic upstream from an entry or exit if the above-mentioned conditions for an induced upstream phase transition from free to synchronized traffic.
  • the term access means narrow passages at which the number of lanes is reduced.
  • the master computer detects an occurring phase transition from free to synchronized traffic at the downstream monitoring point M i + ⁇ , it activates the inflow control means 1 and thereby limits the vehicle inflow q e via the access Z to a predeterminable amount, which can preferably be predetermined depending on the situation, for example as a function of the number of lanes on the main route and / or of measured or forecast values for the flow of traffic on the main route upstream of the resulting synchronized traffic.
  • a complete closing of the access Z in the periods of synchronized traffic can also be provided.
  • control computer determines on the basis of the average speed values at the relevant monitoring point M i + ⁇ that there has been a reverse phase transition from synchronized to free traffic, that is to say that the synchronous traffic has dissolved into free traffic, it is raised by correspondingly controlling the inflow control means 1 the access restriction again.
  • a second variant consists of a procedure analogous to the first variant above, which differs from this only in that instead of the monitoring point M i + ⁇ closest to the access Z downstream, the monitoring point Mi closest upstream is used, ie the traffic control computer detects the occurrence of phase transitions from free to synchronized traffic and vice versa at this upstream point M. If there is free traffic, there is no restriction of the inflow via the access Z, while during a transition to synchronized traffic the inflow control means 1 restrict this inflow q e depending on the situation.
  • the occurrence of phase transitions between free and synchronized traffic is monitored both at the upstream monitoring point Mi and at the downstream monitoring point M i + ⁇ of the respective access Z.
  • a restriction of the inflow q e via the access Z is then triggered in one of these two variants at the point in time at which an occurring phase transition from free to synchronized traffic is detected at the monitoring point Mi closest to the access Z upstream.
  • the inflow restriction is then lifted again at the point at which the reversing phase transition from synchronous to free traffic is determined at the monitoring point M 1+ ⁇ closest to the entrance Z, for example by the average speed exceeding a predefinable threshold value there.
  • the other variant which makes use of both monitoring points M x , M 1+ ⁇ , their roles are reversed, i.e.
  • threshold values and phase transition criteria mentioned can be suitable for the person skilled in the art, depending on the application, and can be variably determined, if necessary, depending on the situation.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)

Abstract

L'invention concerne un procédé destiné à la surveillance du trafic dans un réseau routier, qui permet de détecter l'état actuel ou futur prévisible de la circulation au niveau d'un ou de plusieurs points dudit réseau et de le différencier en trois états : circulation libre, circulation synchronisée et embouteillage. L'invention concerne également un procédé destiné à la régulation de la circulation des véhicules, qui permet de surveiller l'état du trafic sur un tronçon du réseau routier et de réguler l'accès des véhicules audit tronçon en fonction de l'état du trafic détecté. Selon l'invention, le procédé de surveillance du trafic est conçu de façon à reconnaître ou à prévoir les zones de transition entre circulation libre et circulation synchronisée et/ou embouteillage au moyen de critères spécifiques ; et la circulation des véhicules sur le tronçon surveillé est régulé en fonction de zones de transition détectées entre circulation libre et circulation synchronisée. Ce procédé peut être utilisé par exemple pour les réseaux de voies express.
EP99941527A 1998-08-08 1999-08-06 Procede de surveillance du trafic et de regulation de la circulation des vehicules dans un reseau routier Expired - Lifetime EP1110195B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19835979 1998-08-08
DE19835979A DE19835979B4 (de) 1998-08-08 1998-08-08 Verfahren zur Verkehrszustandsüberwachung und Fahrzeugzuflußsteuerung in einem Straßenverkehrsnetz
PCT/EP1999/005689 WO2000008615A2 (fr) 1998-08-08 1999-08-06 Procede de surveillance du trafic et de regulation de la circulation des vehicules dans un reseau routier

Publications (2)

Publication Number Publication Date
EP1110195A2 true EP1110195A2 (fr) 2001-06-27
EP1110195B1 EP1110195B1 (fr) 2002-10-09

Family

ID=7876934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99941527A Expired - Lifetime EP1110195B1 (fr) 1998-08-08 1999-08-06 Procede de surveillance du trafic et de regulation de la circulation des vehicules dans un reseau routier

Country Status (5)

Country Link
US (1) US6587779B1 (fr)
EP (1) EP1110195B1 (fr)
JP (1) JP3526034B2 (fr)
DE (1) DE19835979B4 (fr)
WO (1) WO2000008615A2 (fr)

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DE10013603C1 (de) * 2000-03-18 2001-11-22 Daimler Chrysler Ag Verfahren zur Bereitstellung von Verkehrsinformationen
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CA2726146A1 (fr) * 2008-06-25 2009-12-30 Tomtom International B.V. Appareil de navigation et procede permettant de detecter qu'un parc de stationnement est recherche
US8368559B2 (en) * 2009-08-26 2013-02-05 Raytheon Company Network of traffic behavior-monitoring unattended ground sensors (NeTBUGS)
DE102009052773B3 (de) * 2009-11-11 2011-04-28 Audi Ag Verfahren zum Betrieb eines Stauassistenzsystems
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CN103456172B (zh) * 2013-09-11 2016-01-27 无锡加视诚智能科技有限公司 一种基于视频的交通参数测量方法
EP3114574A4 (fr) * 2014-03-03 2018-03-07 Inrix, Inc. Détection d'obstructions de circulation
CN103927887B (zh) * 2014-03-18 2016-01-27 西北工业大学 结合离散速度模型的阵列式fpga交通状态预测及控制系统
US10068470B2 (en) * 2016-05-06 2018-09-04 Here Global B.V. Determination of an average traffic speed
JP7200929B2 (ja) * 2017-03-31 2023-01-10 日本電気株式会社 渋滞推定装置、渋滞推定方法およびそのプログラム
DE102018009429A1 (de) 2018-11-30 2019-05-02 Daimler Ag Verfahren zur Verkehrszustandsüberwachung
CN110992685B (zh) * 2019-11-20 2021-05-14 安徽百诚慧通科技有限公司 一种基于高速公路交通流突变的交通安全预警方法
CN111932893B (zh) * 2020-08-25 2022-07-05 上海宝康电子控制工程有限公司 基于信号与电警数据融合技术实现路段状态研判处理的方法
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IT202200009197A1 (it) 2022-05-05 2023-11-05 Fiat Ricerche "Procedimento per monitorare il traffico stradale e fornire relative informazioni a più autoveicoli, e relativo sistema"

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Also Published As

Publication number Publication date
EP1110195B1 (fr) 2002-10-09
US6587779B1 (en) 2003-07-01
DE19835979A1 (de) 2000-02-10
JP3526034B2 (ja) 2004-05-10
WO2000008615A2 (fr) 2000-02-17
WO2000008615A3 (fr) 2000-06-02
JP2002522835A (ja) 2002-07-23
DE19835979B4 (de) 2005-01-05

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