ISO/TS 25114:2010
(Main)Intelligent transport systems — Probe data reporting management (PDRM)
Intelligent transport systems — Probe data reporting management (PDRM)
ISO/TS 25114:2010 provides a common framework for defining probe data reporting management (PDRM) messages to facilitate the specification and design of probe vehicle systems and gives concrete definitions of PDRM messages. ISO/TS 25114:2010 also specifies reference architecture for probe vehicle systems and probe data which incorporates PDRM, based on the reference architecture for ISO 22837, and basic data framework for PDRM instructions, which defines specifically necessary conditions for PDRM instructions, and notations of these instructions (in XML).
Systèmes intelligents de transport — Management de rapport de données de sonde (PDRM)
General Information
Standards Content (Sample)
TECHNICAL ISO/TS
SPECIFICATION 25114
First edition
2010-10-15
Intelligent transport systems — Probe
data reporting management (PDRM)
Systèmes intelligents de transport — Management de rapport de
données de sonde (PDRM)
Reference number
ISO/TS 25114:2010(E)
©
ISO 2010
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ISO/TS 25114:2010(E)
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ISO/TS 25114:2010(E)
Contents Page
Foreword .v
Introduction.vi
1 Scope.1
2 Normative references.2
3 Terms and definitions .2
4 Reference architecture.4
4.1 General .4
4.2 Referenced data repository.4
4.3 Onboard data source .4
4.4 PDRM generator .4
4.5 Probe data element generation.5
4.6 Probe collection.5
4.7 PDRM transmitter .5
4.8 Reporting condition .5
4.9 PDRM message.5
4.10 Probe message generation.5
4.11 PDRM receiver .5
5 Basic data framework .6
5.1 General .6
5.2 PDRM data element .6
5.3 PDRM messages.7
6 PDRM common data elements.8
6.1 General .8
6.2 DataElement.8
6.3 PDRStopTime.8
6.4 PDRStartTime .8
6.5 Heading.8
6.6 NumInstructions .8
6.7 NumRegions .8
6.8 PDRM instruction type.8
6.9 Region.8
6.10 RegionType .9
6.11 RegionData.9
6.12 Reporting frequency .9
6.13 RoadwayHeading.9
6.14 Vehicle heading .10
6.15 VehicleType.10
7 PDRM instruction definitions .15
7.1 General .15
7.2 Data capture instruction .15
7.3 Threshold instruction.15
7.3.1 Threshold .15
7.3.2 ThresholdDirection.15
7.4 Delta instruction .15
7.4.1 DeltaValue .15
7.4.2 DeltaDirection .15
7.4.3 TimeDiff .15
Annex A (informative) PDRM operational concept.17
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ISO/TS 25114:2010(E)
Annex B (informative) PDRM elements.19
Annex C (normative) Probe data reporting message structure .29
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ISO/TS 25114:2010(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
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International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a
technical committee may decide to publish other types of document:
— an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in
an ISO working group and is accepted for publication if it is approved by more than 50 % of the members
of the parent committee casting a vote;
— an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting
a vote.
An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a
further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is
confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an
International Standard or be withdrawn.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TS 25114 was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
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ISO/TS 25114:2010(E)
Introduction
Probe vehicle systems are being investigated and deployed throughout the world. It is expected that the
number of practical systems will grow steadily over the next few years. Since communications airtime will
always be a scarce and expensive commodity, efficient probe data reporting systems must rely on techniques
to use airtime efficiently and economically. One way to accomplish this is to have the probe processing center
guide the economic collection of necessary probe information by sending reporting management instructions
to probe vehicles, that is probe data reporting management (PDRM).
As probe vehicle systems have to collect and manage probe data from a variety of vehicles from different
vehicle manufacturers, the standardization of these reporting management instructions is essential. To do this,
a common framework for PDRM is also required.
This Technical Specification
⎯ helps system developers and operators to specify efficient probe data collection and processing systems;
it also promotes communication and mutual understanding among the developers and the operators of
probe vehicle systems, and
⎯ helps system developers who are developing probe vehicle systems to define a key tool for
communications-efficient probe vehicle systems, i.e. PDRM.
This Technical Specification also provides
a) a reference architecture for PDRM within an architecture which encompasses both this function and
PDRM defined in ISO 22837,
b) the basic data framework for defining PDRM instructions, and
c) the concrete definition of these instructions.
PDRM enables a landside probe processing center to issue requests to probe vehicles to optimize probe data
reporting. A preliminary set of management instructions for PDRM are defined which support selective probe
data reporting and the efficient use of communications airtime.
A reference model is provided which incorporates the reference model of ISO 22837, vehicle probe data for
wide area communications, and also encompasses PDRM aspects.
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TECHNICAL SPECIFICATION ISO/TS 25114:2010(E)
Intelligent transport systems — Probe data reporting
management (PDRM)
1 Scope
This Technical Specification provides a common framework for defining probe data reporting management
(PDRM) messages to facilitate the specification and design of probe vehicle systems and gives concrete
definitions of PDRM messages.
This Technical Specification specifies
a) reference architecture for probe vehicle systems and probe data which incorporates PDRM based on the
reference architecture for ISO 22837, and
b) basic data framework for PDRM instructions, which defines specifically
1) necessary conditions for PDRM instructions, and
2) notations of these instructions (in XML).
This Technical Specification also provides the rules for using PDRM instructions.
Different types of PDRM messages are also identified and defined, such as
a) PDRM messages consisting of individual instructions which define reporting aspects or requirements for
probe vehicle systems,
b) start/stop all probe data reporting,
c) start/stop probe data reporting of specific probe data elements, and
d) generic scheme for conveying criteria for reporting specific probe data elements.
PDRM instructions may be structured in terms of a time period in which they are valid (duration), geographic
region, and roadway heading to which the instruction applies.
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ISO/TS 25114:2010(E)
Figure 1 — Scope of this Technical Specification
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 14817, Transport information and control systems — Requirements for an ITS/TICS central Data Registry
and ITS/TICS Data Dictionaries
ISO 22837:2009, Vehicle probe data for wide area communications
ISO 1000, SI units and recommendations for the use of their multiples and of certain other units
ISO/IEC 8824-1:2008, Information technology — Abstract Syntax Notation One (ASN. 1):Specification of basic
notation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 22837 and the following apply.
3.1
probe data
vehicle sensor information formatted as probe data elements and/or probe messages that is processed,
formatted, and transmitted to a land-based center for processing to create a good understanding of the driving
environment
3.2
probe data element
data item included in a probe message
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ISO/TS 25114:2010(E)
3.3
probe message
structured collation of data elements suitable to be delivered to the onboard communication device for
transmission to a land-based center
NOTE It is emphasized that a probe message should not contain any information that identifies the particular vehicle
from which it originated or any of the vehicle's occupants, directly or indirectly. In delivering a probe message to be
transmitted by the onboard communication device, the onboard data collection system will request that the message be
packaged and transmitted without any vehicle or occupant identifying information.
3.4
PDRM commands
commands sent within probe vehicle systems to manage the content and transmission of probe messages
EXAMPLES
⎯ Selectively enable or disable various levels of probe data reporting
⎯ Selectively enable or disable reporting of particular types of probe data
⎯ Adjust the criteria for probe data reporting for specific probe data elements (for example, do not report a smaller than
±3 degree difference in air temperature)
⎯ Adjust the criteria for probe data reporting for specific probe data elements based on the delta value
NOTE These PDRM commands can be structured with time and/or geographic information to define a context in
which they are valid.
3.5
PDRM common data element
one of several data elements that are included in all PDRMs
3.6
PDRM instruction type-specific elements
elements particular to the PDRM instruction type
NOTE The instruction types are data capture, threshold and delta.
3.7
PDRM messages
message containing one or more PDRM instructions within a message structure
3.8
probe vehicle system
system consisting of vehicles which collect and transmit probe data and land-based centers which collate and
process data from many vehicles to build an accurate understanding of the overall roadway and driving
environment
3.9
processed probe data
data from probe data messages which has been collated and analysed in combination with other data
3.10
vehicle sensor
device within a vehicle that senses conditions inside and/or outside the vehicle or that detects actions that the
driver takes
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ISO/TS 25114:2010(E)
4 Reference architecture
4.1 General
Meta-architecture encompassing PDRM messages and also probe data reporting is specified in ISO 22837.
The reference architecture for PDRM presents the initial categorization of system components and their
relationships from a conceptual point of view. A component is depicted as a UML class and represents an
encapsulation of functions and data that is conceptually considered as an individual entity in the PDRM
instructions. A relationship is depicted as a UML association and represents potential control and/or data flow
among components.
Figure 2 shows the overall structure of the reference architecture for PDRM instructions.
Figure 2 — Reference architecture for PDRM
The components of this reference architecture are specified in 4.2 and 4.3.
4.2 Referenced data repository
Referenced data repository holds data for reference by the probe message generator.
4.3 Onboard data source
The onboard data source provides original data that will become a probe data element. Original data may be
raw sensor data or data from other onboard applications. Onboard data sources may be (various types of)
sensors or onboard systems.
4.4 PDRM generator
Landside provides the mechanism that creates the PDRM message as specified by the probe processing
center.
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ISO/TS 25114:2010(E)
4.5 Probe data element generation
Probe data element generation describes a process for creating probe data elements from original data,
including
a) no processing (probe data element is identical to original data),
b) normalizing original data (probe data element is the result of performing a calculation or transformation on
original data), and
c) processing original data to generate new type of data (multiple items of original data are processed,
possibly over a time period, to produce the probe data element, e.g. "traffic jam detected").
4.6 Probe collection
Probe collection describes a process a landside activity undertakes that receives probe messages sent by
vehicles and extracts probe data from these messages.
4.7 PDRM transmitter
The PDRM transmitter functionality sends PDRM messages as described by the PDRM generator.
4.8 Reporting condition
The probe data reporting condition of a probe message is determined by a PDRM message. This Technical
Specification expects on-board devices utilizing this Technical Specification to possess the ability to process
PDRM messages based on the availability of the probe data elements to the on-board device or vehicle.
4.9 PDRM message
A PDRM message is a message in a probe vehicle system that contains commands for controlling probe data
collection and transmission. Commands include
a) selectively enabling or disabling various levels of probe data reporting,
b) selectively enabling or disabling reporting of particular types of probe data,
c) adjusting the criteria for probe data reporting for specific probe data elements (for example, do not report
a smaller than ±3 degree difference in air temperature), or
d) adjusting the criteria for probe data reporting for specific data elements based on the delta value. These
messages can be structured with time and/or geographic information which define windows/regions within
which to apply the instructions.
4.10 Probe message generation
Describes a process by which probe messages are created. This may involve commands in PDRM messages
and other criteria not specifically contained in a PDRM message.
4.11 PDRM receiver
Describes the process a probe vehicle system follows to provide a filtering functionality based on received
PDRM messages. The PDRM receiver receives PDRM messages and processes for relevance to vehicle
location, heading and time.
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ISO/TS 25114:2010(E)
5 Basic data framework
5.1 General
The basic data framework describes the way to define PDRM instructions. Each message is specified in
accordance with ISO 14817. As the PDRM message is based on the probe messages described in ISO 22837,
the probe data elements and probe message formats shall conform to the data framework therein.
5.2 PDRM data element
The following are the requirements for specifying a PDRM data element.
a) A PDRM data element shall consist of a (property of a class, value) pair,
e.g. ObjectClassTerm.propertyTerm:value-domain-term.
b) Each PDRM data element should have the following meta attributes:
1) descriptive name: A name in the form of the PDRM data element
"ObjectClassTerm.propertyTerm:value-domain-term". Descriptive name is used for the identification
of PDRM data element.
2) ASN.1 name: The ASN.1 name shall be the name of a data concept expressed as a valid
"typereference" as defined in 12.2 of ISO/IEC 8824-1:2008.
3) ASN.1 object identifier: A unique ASN.1 object identifier in accordance with ISO/IEC 8824-1.
4) definition: A statement in natural-language text that expresses the essential meaning of the PDRM
data element and assists humans in differentiating the data element from all other data elements.
5) descriptive name context: A designation of the ITS/TICS functional area within which the
descriptive name is relevant. The descriptive name context for each PDRM data element is "PDRM".
6) data concept type: A categorization of the kind of data concept. The data context type of each
PDRM data element is "PDRM data element".
7) standard: The alphanumeric designation of the standard, or other reference, that defines and
describes the PDRM data element, typically the functional Data Dictionary standard that defines the
PDRM data element.
8) data type: The logical representation of the PDRM data element as expressed as a valid data
concept instance of an ASN.1 data type.
9) format: A natural language description of the logical layout of the data concept to facilitate
interchange of data.
10) unit of measure: Units shall be defined in accordance with ISO 1000. For units of enumeration, such
as equipment or units of issue, the standard measure shall be defined using this meta attribute.
11) valid value rule: A natural-language text definition of the rule(s) by which permissible legal instances
of a PDRM data element are identified.
12) data quality: Specifies the details of data quality for a PDRM data element. Multiple items may be
required to describe data quality, with some items being qualitative and others quantitative.
NOTE These basic meta attributes are specified either as mandatory or as optional in ISO 14817, but are mandatory
for PDRM data elements.
c) When a probe data dictionary is registered to the data registry, it should comply with ISO 14817;
administrative meta attributes which are mandatory should be described.
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ISO/TS 25114:2010(E)
5.3 PDRM messages
The following are the requirements for defining a PDRM message.
a) Each PDRM message consists of an instruction set of PDRM data elements sent to a vehicle from a
probe processing center as a unit.
b) Each probe message consists of PDRM common data elements and PDRM instruction type-specific
elements.
c) Each PDRM data element included in each PDRM message satisfies the necessary conditions for PDRM
data elements described above.
d) Each PDRM message should have the following basic meta attributes, as defined in ISO 14817:
1) descriptive name: A name of the PDRM message in the form of "MessageTerm:message".
Descriptive name is used for the identification of a PDRM message.
2) ASN.1 name: The ASN.1 name shall be the name of a data concept expressed as a valid
"typereference" as defined in 12.2 of ISO/IEC 8824-1:2008.
3) ASN.1 object identifier: A unique ASN.1 object identifier in accordance with ISO/IEC 8824-1.
4) definition: A statement in natural-language text that expresses the essential meaning of the PDRM
message and assists humans in differentiating the message from all other messages.
5) descriptive name context: A designation of the ITS/TICS functional area within which the
descriptive name is relevant. Descriptive name context for each PDRM message is "PDRM".
6) data concept type: A categorization of the kind of data concept. The data context type of each
PDRM message is "message".
7) architecture reference: The name of one or more ITS/TICS Architecture "architecture flow"(s) with
corresponding architecture source (subsystem or terminator) and architecture destination
(subsystem or terminator) into which this data concept can be meaningfully categorized in whole or
in part.
8) architecture name: The designator (e.g. the title or number) of an ITS/TICS or other architecture
that contains the architecture reference(s).
9) architecture version: The version number of an ITS/TICS or other architecture that contains the
architecture reference(s).
10) metadata source: Indicates whether or not each data element in the message is defined in this
dictionary; here "direct" means all PDRM data elements in PDRM messages are defined in this
dictionary.
11) data type: The logical representation of the message as expressed as a valid message instance of
an ASN.1 data type. The text of this meta-attribute shall consist of a complete and syntactically
correct ASN.1 module definition.
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ISO/TS 25114:2010(E)
6 PDRM common data elements
6.1 General
Conforming PDRM messages and the instructions contained therein are defined based on the basic data
framework. Each PDRM instruction shall contain the basic PDRM common data elements. These PDRM
common data elements include the number of PDRM instructions, PDRM instruction type, vehicle type code,
geo-specific address type, geo-specific address data, vehicle heading, roadway heading, reporting frequency,
and the probe data element to which the command applies.
The concept of PDRM common data elements identifies the PDRM common data element set between the
different message types. This concept does not intend to reflect a generic message framework and should not
be treated as such. Each PDRM instruction defines a different para
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