Results for area 10.4 Reference data model for public transport concepts
the work of a vehicle from the time it leaves a PARKING POINT after parking until its next return to park at a PARKING POINT. Any subsequent departure from a PARKING POINT after parking marks the start of a new BLOCK. The period of a BLOCK has to be covered by DUTIES.
a 0-dimensional node of the network used for the spatial description of the network; POINTs may be located by a LOCATION in a given LOCATING SYSTEM
a STOP POINT or TIMING POINT in a JOURNEY PATTERN with its order in that JOURNEY PATTERN
time data about when a public transport vehicle should pass a particular POINT IN JOURNEY PATTERN on a particular DATED VEHICLE JOURNEY, in order to match the latest valid plan
NOTE See also OBSERVED PASSING TIME and ESTIMATED PASSING TIME. In TransModel, TARGET is synonymous with AIMED.
the concept of passing time may be viewed as a simple passage (e.g. of a bus at a stop point) or as a longer stay (e.g. in maritime ports of call)
NOTE The attributes describing the waiting time in the subtypes of passing time, in particular, will be used to describe such a call. The attribute ‘alight and reboard’ will express the possibility for the passenger to alight for a while, during the passing time of a vehicle journey at a particular stop poing. The passing times that are computed on a specific operating day are called dated passing time. This entity has several subtypes; TARGET PASSING TIME, the latest official plan for a dated vehicle journey, on a point in journey pattern; ESTIMATED PASSING TIME, a forecast for a monitored vehicle journey on a point in journy pattern; OBSERVED PASSING TIME, recorded for a monitored vehicle journey, on a particular point.
In SIRI Passing times are subsumed into a CALL entity.
a POINT against which the timing information necessary to build schedules may be recorded.
NOTE 1 to entry In SIRI, may be, but is not necessarily, a STOP POINT.
NOTE 2 to entry In many systems, Target Times for stops that are not timing points are interpolated simplistically from the timing points by either the scheduling system, or the AVMS system, and may represent a lower level of accuracy of prediction.
a time constraint for one or several SERVICE JOURNEYs fixing interchanges between them and/or an external event (e.g. arrival or departure of a feeder line, opening time of the theatre, etc.)
period in a day, significant for some aspect of public transport, e.g. similar traffic conditions or fare category
a particular journey of a vehicle on a particular OPERATING DAY, including all modifications decided by the control staff
the origin of operational data referring to one single responsibility. References to a data system are useful in an interoperated computer system
NOTE For SIRI, this entails in particular specific systems for assigning unique identifiers to relevant entities such as STOP POINTS or JOURNEYS, about which messages are to be exchanged, and which can be matched to the locally known entities identified by the respective internal operating data. The DATA SYSTEM must be mutually agreed between CLIENT and SERVER. A DATA SYSTEM has both a data model to describe the entities and their relationships, and a Namespace to describe the unambiguous set of identifier values.
an ordered list of STOP POINTS and TIMING POINTS on a single ROUTE, describing the pattern of working for public transport vehicles
NOTE A JOURNEY PATTERN may pass through the same POINT more than once. The first POINT of a JOURNEY PATTERN is the origin. The last POINT is the destination.
the subset of a JOURNEY PATTERN made up only of STOP POINTs IN JOURNEY PATTERN
a TRIP OPTIMIZATION QUERY represents the trip planning request, as specified by the traveller; it is expressed from one PLACE to another
abstract representation of elementary objects related to the spatial representation of the network POINTs (0-dimensional objects), LINKs (1-dimensional objects) and ZONEs (2-dimensional objects) which may be viewed as SIMPLE FEATUREs
a theoretically available vehicle resource for an OPERATING DAY, foreseen to be monitored
a classification of public transport vehicles of the same VEHICLE TYPE, e.g. according to equipment specifications or model generation
the planned movement of a public transport vehicle on a DAY TYPE from the start point to the end point of a JOURNEY PATTERN on a specified ROUTE
NOTE In SIRI, the VEHICLE makes a call at each stop, for timetabled stops at a specific PASSING TIME. There may be a separate Arrival Time and Departure Time. A DATED VEHICLE JOURNEY is an instance of a VEHICLE JOURNEY made on a specific Calendar day.
aggregate of SIMPLE FEATUREs and/or other COMPLEX FEATUREs
EXAMPLE A STOP AREA: combination of STOP POINTS; a train station: combination of SIMPLE FEATUREs (POINTs, LINKs) and COMPLEX FEATUREs (STOP AREAs).
NOTE 1 to entry An IFOPT STOP PLACE is a type of COMPLEX FEATURE.
a geographic location of any type. It may be specified as the origin or destination of a trip.
NOTE A PLACE may be of dimension 0 (a POINT), 1 (a road section) or 2 (a ZONE).
In IFOPT a PLACE may be of dimension 3 and be further associated with a LEVEL. A PLACE may be identified by a COMMON NAME, a POSTAL ADDRESS or a POINT OF INTEREST.
a journey that is monitored as being operated by a LOGICAL VEHICLE. According to the monitoring system capabilities, a MONITORED VEHICLE JOURNEY may be related to a DATED VEHICLE JOURNEY, or only to a JOURNEY PATTERN.
an activity consisting in the assignment, at a certain time, of operational data to a monitored LOGICAL VEHICLE (e.g. that the vehicle is operating a certain MONITORED VEHICLE JOURNEY, or has passed at a certain OBSERVED PASSING TIME at a POINT)
NOTE 1 to entry In SIRI, the information reported by the SIRI Vehicle Monitoring Service may include both the vehicle’s location, i.e. geospatial position, and other operational data such as the number of passengers, and whether it is in congestion.
a SERVICE JOURNEY is a VEHICLE JOURNEY on which PASSENGERS will be allowed to board or alight from VEHICLES at STOP PLACES
NOTE These journeys are usually published and known by PASSENGERS.
the TIMETABLED arrival or departure time for a Vehicle Journey at a STOP POINT is the planned time for this event, as distinct from the ESTIMATED or OBSERVED time
NOTE 1 to entry In TransModel, TIMETABLED is synonymous with ‘Scheduled’.
condition used in order to characterise a given VERSION of a VERSION FRAME
NOTE 1 to entry A VALIDITY CONDITION consists of a parameter (e.g. date, triggering event, etc.) and its type of application (e.g. for, from, until, etc.).
the position of a POINT with a reference to a given LOCATING SYSTEM (e. g. WGS84 coordinates)
the actual passing of a public transport vehicle at a pre-defined POINT during a MONITORED VEHICLE JOURNEY
NOTE See also TARGET PASSING TIME and ESTIMATE PASSING TIME.
time data, calculated from the latest available input, about when a public transport vehicle will pass a particular POINT IN JOURNEY PATTERN on a specified MONITORED VEHICLE JOURNEY. These are mainly used to inform passengers about expected times of arrival and/or departure, but may also be used for monitoring and re-planning. See also OBSERVED (ACTUAL) PASSING TIME, TARGET (AIMED) PASSING TIME and TIMETABLED PASSING TIME.
a POINT in a journey where PASSENGERs can board or alight from VEHICLES
NOTE SCHEDULED STOP POINT refines the primary Transmodel sense of a STOP POINT, which is that of the logical stop point within a scheduled journey, rather than a physical point in the infrastructure where boarding and alighting may take place, for which the terms for specific STOP PLACE COMPONENTS such as QUAY or BOARDING POSITION are used; although the same identifiers are often used for both SCHEDULED STOP POINT and STOP PLACE COMPONENT, a practice which provides significant benefits for data management, they nonetheless represent distinct concepts. A STOP POINT ASSIGNMENT is used to associate a SCHEDULED STOP POINT with a STOP PLACE COMPONENT.
the sequence of a STOP within a JOURNEY PATTERN distinguishing repeated visits to a stop by a vehicle within the same journey pattern; a monotonically increasing number that is unique within a given journey pattern, but is not necessarily strictly sequential
NOTE The number provides both a unique identifier and a relative ordering.
each instantiation of this entity gives the number of items of one TYPE OF EQUIPMENT a VEHICLE MODEL should contain for a given PURPOSE OF EQUIPMENT PROFILE
NOTE 1 to entry The set of instantiations for one VEHICLE MODEL and one purpose gives one complete “profile”.
a day of public transport operation of which the characteristics are defined within in a specific SERVICE CALENDAR; an OPERATING DAY may last more than 24 hours
the supply basis for each operating day is known as a production plan, composed of the planned work of each available resource (e.g. vehicles and drivers)
EXAMPLE It includes for instance all dated journeys planned on the considered day, including occasional services.
a part of a BLOCK, composed of consecutive VEHICLE JOURNEYs defined for the same DAY TYPE, all operated on the same LINE
NOTE Also sometimes termed a Run.
a CONTROL ACTION consisting in adding a completely new DATED VEHICLE JOURNEY to the latest valid plan
an action resulting from a decision taken by the controller causing an amendment of the operation planned in the PRODUCTION PLAN
the scheduled possibility for transfer of passengers between two SERVICE JOURNEYS at the same or different STOP POINTS
NOTE In order to reach the destination of a trip, a passenger will have to interchange between vehicles running on different LINEs, if there is no direct service between the origin and the destination STOP POINTS. A transfer will be necessary where the passenger will leave the vehicle at a particular STOP POINT and enter another vehicle (which serves another JOURNEY PATTERN, usually on a different LINE, at the same or another STOP POINT). Such interchanges may be planned and even sometimes guaranteed. They are therefore controlled during operations.
the scheduled possibility for transfer of passengers between two SERVICE JOURNEYs at the same or different STOP POINTs
NOTE 1 to entry In SIRI, there are mechanisms for managing the real-time INTERCHANGE between Feeder VEHICLE JOURNEYS and Distributor VEHICLE JOURNEYS. Also known as “Connection Protection”.
There are four different degrees of interchange management:
• PLANNED – an interchange is intended in the normal static timetable.
• ADVERTISED – an interchange is intended and is publicised as being possible.
• CONTROLLED – the interchange is actively monitored to inform travellers whether the interchange can be made.
• GUARANTEED – the Distributor Service will be delayed to ensure the connection.
The SERVICE JOURNEY INTERCHANGE allows as well the storing of a quality parameter for ensuring connections, providing the maximum time a vehicle may wait for connecting vehicles, beyond the planned departure time.
the physical (spatial) possibility for a passenger to change from one public transport vehicle to another to continue a trip; different transfer times may be necessary to cover interchange over a given connection link, depending on the kind of passenger
NOTE 1 to entry In SIRI, a Feeder service may arrive at one STOP POINT in the CONNECTION LINK, and the Distributor may leave from the same or a different stop in the CONNECTION LINK.The interchange duration, i.e. transfer time is the time needed to go from stop point to stop point across a CONNECTION LINK. In SIRI, it does not include time needed to board or alight. Several different types of interchange duration may be specified.
an oriented spatial object of dimension 1 with view to the overall description of a network, describing a connection between two POINTs
a complete journey operated by a coupled train, composed of two or more VEHICLE JOURNEYs remaining coupled together all along a JOURNEY PATTERN
NOTE A COUPLED JOURNEY may be viewed as a single VEHICLE JOURNEY.
physical (spatial) possibility for a passenger to access or leave the public transport system
NOTE 1 to entry This link may be used during a trip for: the walking movement of a passenger from a PLACE (origin of the trip) to a STOP POINT (origin of the PT TRIP); or the walking movement from a STOP POINT (destination of the PT TRIP) to a PLACE (destination of the trip).
NOTE 2 to entry In IFOPT, a STOP PLACE, an ADDRESS, a POINT of INTEREST, a PARKING and a TOPOGRAPHICAL PLACE are all types of PLACE and so an ACCESS LINK may also explicitly connect them.
ZONE for which the duration to cover any ACCESS LINK to a particular STOP POINT is the same
NOTE 1 to entry The IFOPT Concept of an ACCESS SPACE is distinct from the Transmodel concept of an ACCESS ZONE as an ACCESS SPACE may have different NAVIGATION PATHS whose traversal takes different durations.
set of VERSIONS referring to the same DATA SYSTEM and belonging to the same TYPE OF FRAME
NOTE 1 to entry A FRAME may be restricted by VALIDITY CONDITIONs.
NOTE 2 to entry In IFOPT, used to group elements such as STOP PLACEs, STOP PLACE SPACEs and PATH LINKs into a common model version when each item does not have its own version.
item of equipment of a particular type actually available at an individual STOP POINT (e.g. post, shelter, seats, information display)
NOTE 1 to entry The IFOPT STOP PLACE EQUIPMENT is a generalisation of STOP POINT EQUIPMENT that may include equipment located elsewhere in the STOP PLACE as well as on the QUAY.
classification of public transport vehicles according to the vehicle scheduling requirements in mode and capacity (e.g. standard bus, double-deck)
an EVENT may be raised in response to the disturbance and over the lifetime of the EVENT one of more CONTROLLER ACTIONS and messages may then be associated with it
NOTE In SIRI, the EVENT is generally avoided of more specific terms for entities. Any event affecting the public transport operation (production follow-up, management of information or the technical functioning), occurring on an OPERATING DAY and recorded in the system. An EVENT is generally causing a CONTROL ACTION.
a vehicle composed of TRAIN ELEMENTs in a certain order, i.e. of wagons assembled together and propelled by a locomotive or one of the wagons
a specification of the order of TRAIN ELEMENTs in a TRAIN
a composite train formed of several TRAIN BLOCK PARTs coupled together during a certain period
NOTE Any coupling or separation action marks the start of a new TRAIN BLOCK.
a public transport vehicle used for carrying passengers
NOTE Also a train is a VEHICLE. A train is composed of TRAIN ELEMENTS (e.g. wagons, locomotive, etc.).
a part of a TRIP corresponding to the theoretical movement of a user (passenger, driver) on one and only one public transport vehicle, from one STOP POINT to another, on one JOURNEY PATTERN
NOTE Note that a traveller will take one on more RIDES during a TRIP. Each RIDE will be taken using a particular VEHICLE JOURNEY although the RIDE may be shorter that the VEHICLE JOURNEY.
a group of operational data instances which share the same VALIDITY CONDITIONs
NOTE 1 to entry A version belongs to a unique VERSION FRAME and is characterised by a unique TYPE OF VERSION. E.g. NETWORK VERSION for Line 12 starting from 2000-01-01.
NOTE 2 to entry In SIRI Interface Versions are also used for software release levels.
a public transport information facility, as for instance terminals (on street, at information desks, telematic,) or printed material (leaflets displayed at stops, booklets)
NOTE SIRI does not model or represent PI FACILITIES; rather it describes data services that may be used to supply PI FACILITIES.
a group of SCHEDULED STOP POINTs close to each other
a CONTROL ACTION consisting in assigning a new JOURNEY PATTERN (and the ROUTE supporting it) to a DATED VEHICLE JOURNEY
an advertised destination of a specific JOURNEY PATTERN, usually displayed on a headsign or at other onboard locations
NOTE 1 to entry In SIRI, different values for DESTINATION DISPLAY may be used in the dated timetable, the real-time table, or on individual calls to support stop centric and vehicle centric presentations of information to the customer. If not specified on an individual Call element, the DESTINATION DISPLAY will be inherited from the most recent previous Call element. If there are no values on previous calls, it will be inherited from the DATED VEHICLE JOURNEY destination displays.
a two-dimensional PLACE within the service area of a public transport operator (administrative zone, TARIFF ZONE, ACCESS ZONE, etc.).
a CONTROL ACTION consisting in deleting a DATED VEHICLE JOURNEY from the latest valid plan