Common Logical Data Model: Basis for Global ITS Innovation
own data), road authority and service
provider.
Figure 1: The conceptual framework of a vehicle probe system
the data that requires significant integration
efforts to resolve.
The service provider collects relevant, low-
latency data from probe vehicles and stores
the data in databases; applications and
services analyze the information gathered
and provide updates to the vehicles as
appropriate. Data collected by the roadside
and/or service providers are shared with the
road authority. Likewise, the road authority
might aggregate data from multiple sources
and send the results to service providers.
Data sharing of vehicle probe data
Today, many agencies in different countries
are collecting probe and roadside data to
improve public safety and operational
efficiency. ISO TC 204 is engaging an effort to
inter-connect and share this data. The data
shown on the left of Figure 2 represent
collections of data from different service
providers such as probe services, Electronic
Fee Collection (EFC) services, information
provision services and other services. As the
automotive services are growing with many
innovations, the type of data and the
granularity of the data will be added to the
While standards exist for exchanging
information across each of these links,
seamlessly sharing the information largely
remains an elusive goal due to the lack of a
common data model. Each of the interface
standards have been developed separately,
which often resulted in subtle differences in
IIC Journal of Innovation
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