EP4004840A1 - Système amélioré de planification d'itinéraires pour des usagers d'un réseau multimodal de transports structurés - Google Patents
Système amélioré de planification d'itinéraires pour des usagers d'un réseau multimodal de transports structurésInfo
- Publication number
- EP4004840A1 EP4004840A1 EP20761147.6A EP20761147A EP4004840A1 EP 4004840 A1 EP4004840 A1 EP 4004840A1 EP 20761147 A EP20761147 A EP 20761147A EP 4004840 A1 EP4004840 A1 EP 4004840A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- graph
- network
- multimodal
- traffic
- information
- 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.)
- Withdrawn
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Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
- G06Q10/047—Optimisation of routes or paths, e.g. travelling salesman problem
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/3407—Route searching; Route guidance specially adapted for specific applications
- G01C21/3423—Multimodal routing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/3453—Special cost functions, i.e. other than distance or default speed limit of road segments
- G01C21/3484—Personalized, e.g. from learned user behaviour or user-defined profiles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/3453—Special cost functions, i.e. other than distance or default speed limit of road segments
- G01C21/3492—Special cost functions, i.e. other than distance or default speed limit of road segments employing speed data or traffic data, e.g. real-time or historical
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3605—Destination input or retrieval
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
- G08G1/133—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams within the vehicle ; Indicators inside the vehicles or at stops
Definitions
- TITLE Improved route planning system for users of a multimodal structured transport network
- the field of the invention is that of route planning systems for users of a multimodal network of structured transport, in particular of public transport.
- Online services which allow a user to plan in advance his journey between a departure station and an arrival station, in particular by selecting the times of the various public transport allowing him to make a connection in a middle station with the least possible waiting time.
- the aim of the invention is therefore to solve this problem, in particular by proposing a rerouting solution in the event of traffic disruption.
- the invention relates to a route planning system for users of a multimodal structured transport network suitable for recommending to a user an optimal route for making a journey on said multimodal network between a departure station and a station.
- arrival station characterized in that it is suitable for updating, in real time, an instantaneous graph representative of the multimodal network and of a current operation of the multimodal network from information describing a current state traffic at the current time and information for predicting the evolution of the traffic state from the current time, the graph being initialized from planning information associated with nominal operation of the multimodal network
- the planning system comprising a module for determining an optimal route suitable for using the instantaneous graph to provide an optimal route suitable for the current operation of the network m ultimodal at the request of a user.
- the system comprises one or more of the following characteristics taken in isolation and according to all the technically possible combinations:
- system further includes a module for initializing a graph suitable for generating an initial graph from a description of the multimodal network, tables timetables describing nominal network operation and a history of past traffic conditions on the multimodal network when nominal operation was planned.
- the past states taken into account by the initialization module of a graph are selected according to a plurality of context variables.
- the system further comprises a module for updating a graph suitable for updating the initial graph as a function of the information describing the state of the traffic and the information for predicting the evolution of the state of the traffic. traffic, to obtain the instantaneous graph.
- the subject of the invention is also a global supervision system, characterized in that it integrates a route planning system in accordance with the previous system, the module for initializing a graph being interfaced on the one hand to an historical database and to an operational data management system and the module for updating a graph being interfaced with the operational data management system and a prediction system.
- the subject of the invention is also a method of planning routes for users of a multimodal structured transport network making it possible to recommend to a user an optimal route for making a journey on said multimodal network between a departure station and a station. arrival point, characterized in that the method consists of a step of updating, in real time, an instantaneous graph representative of the multimodal network and of a current operation of the multimodal network on the basis of description information of a current state of the traffic at a current instant and information for predicting the evolution of the state of the traffic from the current instant, the instantaneous graph being determined as a function of an initial graph initialized from planning information associated with nominal operation of the multimodal network, and in a step of determining an optimal route to provide, at the user's request, an optimal route adapted to the ’Current operation of the multimodal network from the instantaneous graph delivered at the output of the update step.
- the method comprises one or more of the following characteristics taken in isolation and according to all the technically possible combinations:
- - a step of initializing a graph suitable for generating the initial graph from a description of the multimodal network, time tables describing a nominal operation of the network and a history of past traffic conditions on the multimodal network when nominal operation was planned.
- the past states taken into account during the step of initializing a graph are selected as a function of a plurality of context variables.
- the updating step consists, in order to obtain the instantaneous graph, in updating the initial graph according to the information describing the current state of the traffic and the information for predicting the evolution of the state of the traffic.
- the step of initializing a graph takes as input information coming from a history database and from an operational data management system
- the step of updating a graph takes as input information coming from the operational data management system and from a prediction system.
- the subject of the invention is also a global supervision system, characterized in that it integrates a route planning system in accordance with the previous system, the module for initializing a graph being interfaced on the one hand to a base historical data and to an operational data management system and the module for updating a graph being interfaced with the operational data management system and a prediction system.
- Figure 1 is a schematic representation, in the form of blocks, of an overall supervision system comprising a route planning system according to the invention
- FIG. 2 is a schematic representation of a portion of a multimodal public transport network, in the vicinity of a connection station between two lines served by public transport means, advantageously of different types;
- Figure 3 is an initial graph calculated offline by the route planning system of Figure 1 for the portion of the network shown in Figure 2;
- Figure 4 is an instant graph dynamically updated by the route planning system of Figure 1 from the initial graph of Figure 3.
- the route planning system according to the invention advantageously forms part of an overall supervision system of a supervision infrastructure of a land multimodal transport network as described in patent application FR 3,047,835.
- the supervision infrastructure 10 comprises a global supervision system 20 interfaced with a database 22 and an operational data management system 40.
- the database 22 stores a history of the state of the traffic on the multimodal network.
- the operational data management system 40 is able to determine an instantaneous state of the traffic on the multimodal network.
- the instantaneous state of traffic is for example characterized by a plurality of variables, in particular variables associated with a level of load (in terms of number of passengers) of the entities of the network, which are vehicles and platforms.
- the instantaneous reports delivered by the system 40 are stored as they occur in the database 22.
- the overall supervision system 20 includes a prediction system 30 and a route planning system 50.
- the route planning system 50 includes a module 52 for calculating an initial graph, a module 54 for updating the initial graph to obtain an instantaneous graph, and a module 56 for determining real-time routes.
- the module 56 for real-time route determination comprises an interface allowing a user 5 to interact with the system 50 by means for example of a computer terminal, connected to a communication network, such as the Internet.
- the user 5 is thus able to transmit to the module 56 an interrogation request, indicating the value of a plurality of parameters, in particular his origin station, his destination station and his preferences (journey time, number of connections , etc.), and to receive from the module 56 a response indicating an optimal recommended route at the time of interrogation.
- the module 52 is interfaced to the database 22 and to the operational data management system 40 so as to calculate, from the topology of the multimodal network and the current and past states of traffic on this network, an initial graph representative of the traffic conditions on the multimodal network in accordance with nominal operation.
- the module 54 is interfaced to the operational data management system 40 and to the prediction system 30.
- the module 54 is able to generate an instantaneous graph resulting from the update of the initial graph from the current operational situation, as measured. by system 40, or the upcoming operational situation, as anticipated by system 30.
- the module 56 is based on the instantaneous graph delivered at the output of the module 54 to determine the optimal route to recommend to the user 5.
- FIG. 2 represents a portion of a multimodal network 2 equipped with the infrastructure 10 of FIG. 1.
- first line L1 composed of an outbound channel L1 1 and a return channel L12 running in parallel with each other.
- the S1 and S2 stations have platforms that allow the exchange of passengers when a vehicle is stopped alongside their platform.
- the station S1 comprises a platform P1 along the outbound path L1 1 and a platform P5 along the return path L12.
- the station S2 comprises a platform P2 along the outward path L1 1 and a platform P6 along the return path L12.
- a second line L2 composed of an outbound track L21 and a return track L22 running in parallel with each other.
- the S2 station has platforms that allow the exchange of passengers.
- the station S2 comprises a platform P4 along the outward path L21 and a platform P3 along the return path L22.
- Station S2 is a connecting station between lines L1 and L2. It allows a user arriving at station S2 via the first line L1, to leave on the second line L2, and conversely to arrive on the second line L2 and to leave from station S2 on the first line L1.
- a first vehicle V1 is traveling on the outbound lane L1 1 of the first line L1
- a second vehicle V2 is traveling on the outbound lane L1 1, behind the first vehicle V1
- a third vehicle V3 is traveling on the return lane L22 of the second line L2.
- the system 50 allows a user 5, whose initial route provided for a correspondence at station S2 between the second vehicle V2 and the third vehicle V3, to be rerouted in real time on another route to take account of the current state. traffic, in this case a delay of the second vehicle V2.
- the system 50 uses a graph which is a specific representation of the state of traffic on the multimodal network 2.
- FIG. 3 represents an initial graph.
- This graph is generated by the module 52 from a description of the multimodal network, traffic planning information for nominal operation of the network and historical information of the state of the traffic when such nominal operation was planned.
- the system 40 communicates timetables for the circulation of vehicles on the various lines of the multimodal network for nominal operation of each line.
- nominal is understood to mean operation of the network without incident and in particular during which the theoretical arrival and departure times at the station of the vehicles circulating on the network are respected.
- the initial graph is limited, for station S1, to platform P1 and, for station S2, to platforms P2 and P3. These platforms are considered to be “physical” nodes.
- the two oriented links connecting platforms P2 and P3 indicate the possibility of a passenger exchange between these two platforms at station S2, one indicating the movement of passengers from platform P2 to platform P3, the other, movement passengers from platform P3 to platform P2.
- Each of these links is associated with at least one travel time attribute, for example worth 3 minutes, indicating the time required for a passenger to pass from one platform to the other using the C23 corridor.
- the initial graph also includes pairs of “event” nodes. They are represented by a circle in Figure 3, arranged along a time axis, each time axis being associated with a platform.
- a pair of “event” nodes comprises a node A, corresponding to the “arrival” event of a vehicle along the associated platform and, a node D, corresponding to the “departure” event of this same vehicle from this same vehicle. same platform.
- a link oriented from node A to node D of the same pair of "event" nodes is indicative of a stop of the vehicle along the associated platform.
- This link is characterized by an attribute of downtime in station.
- the pair of nodes A1 and D1 represents the arrival and departure of the first vehicle V1 along the platform P1.
- the nominal stopping time of the vehicle V1 at station S1 is 1:30 minutes.
- the pair of nodes A2 and D2 represents the arrival and departure of the second vehicle V2 along the platform P1.
- the nominal stopping time of the V2 vehicle at the S1 station is 1:30 minutes.
- the pair of nodes A3 and D3 represents the arrival and departure of the first vehicle V1 along the platform P2.
- the nominal stopping time of vehicle V1 at station S2 is 1: 00 minute.
- the pair of nodes A5 and D5 represents the arrival and departure of the second vehicle V2 along the platform P2.
- the nominal stopping time of vehicle V2 at station S2 is 1: 00 minute.
- the pair of nodes A4 and D4 represents the arrival and departure of the third vehicle V3 along the platform P3.
- the nominal stopping time of the V3 vehicle at station S2 is 1:30 minutes.
- a oriented link connects, for the same vehicle, a starting node D associated with a platform and an arrival node A associated with the next platform along the same line according to the direction of travel of the vehicle.
- a link connects the starting node D1, associated with the platform P1, to the arrival node A3, associated with the platform P2. It corresponds to the movement of the first vehicle V1 from platform P1 to platform P2 in accordance with the time table.
- a link connects the starting node D2 associated with the platform P1 with the arrival node A5 associated with the platform P2. It corresponds to the circulation of the second vehicle V2 from the platform P1 to the platform P2.
- Such a link is characterized by attributes of travel time between stations, maximum authorized load on board the vehicle in question, and average vehicle load (obtained by using historical traffic data).
- An arrival node A is connected to the associated platform P to indicate the possible transfer of passengers from the vehicle to the platform.
- Each link is associated with an attribute of the average number of passengers exiting the vehicle (obtained by using historical traffic data).
- each departure node D is connected to the associated platform to indicate the possible transfer of passengers from the platform to the vehicle stopped along this platform.
- Each link is associated with at least one attribute of the average number of passengers boarding the vehicle (obtained by using historical traffic data).
- FIG. 4 an instantaneous graph resulting from the update of the initial graph of FIG. 3 is represented.
- the instantaneous graph is similar to the initial graph of figure 3. However, the starting node D2 has been moved along the time axis of the platform P1 to take into account a prolonged stop of the second vehicle V2 at the first station. S1. In fact, the stopping time indicated between the arrival and departure nodes, A2 and D2, is now in this example, estimated at a duration of 7:00 minutes, taking into account the typology of the incident.
- the pair of nodes, A5, D5, associated with the next platform P2 is also shifted in time to anticipate the fact that the second vehicle V2 is not not expected at station S2 before 8:17:00, the estimated travel time between platform P1 and platform P2 being here maintained at 6:30 min. For this trip, the estimated loads are reassessed.
- the arrival node A5 is now placed temporally after the departure node D4, indicating that the second vehicle V2 will likely arrive at station S2 after the third vehicle V3 has left.
- the module for determining a route 56 uses the instantaneous graph to check whether the initial route is still achievable given the event that disrupted the traffic, in this case the stopping of the second vehicle V2 at the station. S1 or whether user 5 should be rerouted to optimize his route or the portion of the route that remains to be done.
- the route planning system 50 will now be presented in more detail in its structure.
- the module 52 is able to communicate with the system 40. It transmits a request to the system 40, which responds by returning scheduling information such as the various time tables.
- the time tables for each line of the multimodal network indicate the various vehicles in circulation during the day and, for each vehicle, the times of arrival and departure of each station on the line.
- the module 52 also receives from the database 22 a history of the traffic state for nominal operation of the network.
- the database 22 stores historical data of traffic on the network and, in particular, a history of the load of platforms and vehicles for different operating contexts.
- operating context we mean a set of context variables describing the nominal operation envisaged for traffic on the network and used to initialize the graph. This is for example a type of day (weekdays or weekends), a time slot (rush hour, off-peak hour) or specific circumstances foreseen during the operating day (sporting event at the level of such or such station for example).
- the estimated load of the number of passengers can be weighted or recalculated as a function of the context variables.
- This historical information is loaded by the module 52 and used to instantiate the initial graph associated with the multimodal network, such as that of FIG. 3.
- the system 40 collects instantaneous traffic measurement data from various sources (on-board computers on board vehicles, sensors on the ground, vehicle traffic supervision system along each line. network, etc.) The module 40 performs an analysis of these measurements and merges them to obtain high level data indicative of the instantaneous state of the traffic.
- sources on-board computers on board vehicles, sensors on the ground, vehicle traffic supervision system along each line. network, etc.
- the estimated times of arrival at the next station is for example obtained from a supervision system.
- the module 54 subscribes to a data broadcasting service of the system 40 so as to periodically receive the snapshot of the traffic.
- the function of the prediction system 30 is to deliver predictive data on the evolution of traffic, in particular an estimate of the load at each platform of the multimodal network, and an estimate of the journey times of the vehicles.
- the prediction system 30 is advantageously executed when certain critical events appear on the multimodal network, such as for example the occurrence of an incident or the detection of an overload of passengers at a point of the network.
- the module 54 subscribes to a data broadcasting service from the prediction module 30.
- the taking into account by the module 54 of these estimated data makes it possible to take into account the probable evolution of the state of the network in the near future and not only of its current state.
- the module 54 updates the graph initialized by the module 52 according to the deviations observed with the nominal planned operation.
- module 54 uses more particularly the following information: cancellation or modification of the mission of a vehicle;
- the detection of congestion points on the network such as for example the observation or the estimation of a passenger load on a platform which deviates beyond a predetermined critical threshold, for example determined from the history stored in database 22.
- Each user 5 subscribed to the rerouting service offered by the system 50 indicates in an interrogation request from the system 50 interrogation parameters such as its origin station, its destination station, certain preferences relating to the route (timetable , duration, preferred mode of public transport, etc.).
- this request can be developed automatically or semi-automatically from information related to a profile of the user and / or his past requests.
- system 50 provides user 5 with an optimal route.
- This itinerary can be transmitted automatically and periodically to the user during his trip.
- This optimal route may constitute a variant of the route initially proposed so as to take account of events that have arisen in the operation of the network.
- the optimal route is provided to user 5 only when the latter applies his request to system 50.
- the module 56 is based on the instantaneous graph and not on the initial graph to make a recommendation adapted to a request to be processed.
- the module 56 implements an algorithm for finding the shortest path along the instantaneous graph. This shortest path takes into account the weights on the connection links of the nodes. The weight of a link is calculated based on all the attributes of that link or a part of these attributes.
- the module 56 is based on a statistical approach allowing a robust optimization of a route. According to this approach, the parameters of interest in the optimization of the route are random variables presenting a certain probability distribution and the route finally proposed to the user is the most probable route.
- the module 56 is also based on a particular graph making it possible to simply describe the multimodal network and the traffic on the network. It thus represents certain static aspects of the network, such as the different lines and the possibility of switching from one line to another. This graph represents certain dynamic aspects of the multimodal network, such as the available capacity of the different vehicles of the different modes of transport.
- system 50 just described allows the implementation of a route planning method, in particular to provide a functionality for real-time rerouting of users of a multimodal network.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1908619A FR3099620B1 (fr) | 2019-07-29 | 2019-07-29 | Système amélioré de planification d’itinéraires pour des usagers d’un réseau multimodal de transports structurés |
| PCT/EP2020/071388 WO2021018958A1 (fr) | 2019-07-29 | 2020-07-29 | Système amélioré de planification d'itinéraires pour des usagers d'un réseau multimodal de transports structurés |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4004840A1 true EP4004840A1 (fr) | 2022-06-01 |
Family
ID=69024311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20761147.6A Withdrawn EP4004840A1 (fr) | 2019-07-29 | 2020-07-29 | Système amélioré de planification d'itinéraires pour des usagers d'un réseau multimodal de transports structurés |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20220276062A1 (fr) |
| EP (1) | EP4004840A1 (fr) |
| FR (1) | FR3099620B1 (fr) |
| WO (1) | WO2021018958A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113269347B (zh) * | 2021-03-31 | 2023-05-30 | 安徽农业大学 | 一种基于随机森林的高校快递网络节点流量预测方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3047835B1 (fr) | 2016-02-12 | 2018-03-16 | Alstom Transport Technologies | Infrastructure de supervision d'un reseau de transport multimodal terrestre |
| US11067406B2 (en) * | 2017-12-20 | 2021-07-20 | Trafi Limited | Navigation method using historical navigation data to provide geographical- and user-optimised route suggestions |
-
2019
- 2019-07-29 FR FR1908619A patent/FR3099620B1/fr active Active
-
2020
- 2020-07-29 WO PCT/EP2020/071388 patent/WO2021018958A1/fr not_active Ceased
- 2020-07-29 US US17/631,105 patent/US20220276062A1/en not_active Abandoned
- 2020-07-29 EP EP20761147.6A patent/EP4004840A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021018958A1 (fr) | 2021-02-04 |
| FR3099620B1 (fr) | 2024-02-02 |
| FR3099620A1 (fr) | 2021-02-05 |
| US20220276062A1 (en) | 2022-09-01 |
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