1 Scope
This Technical Specification defines an application interface between DSRC-based OBE and external in-vehicle devices to make DSRC-OBE applicable for diversified tolling environment.
The scope of this Technical Specification covers the following items (also shown in
Figure 2);
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— Definitions of the application interface between DSRC-OBE and external in-vehicle devices (including GNSS, cellular units, CAN interface, etc.).
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— Definitions of message sets and data elements on the interface (based on a sets of base standards, such as ISO 14906:2011, ISO/TS 17575, ISO/TS 13141, ISO/TS 12813, and ISO/TS 25110).
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— For use in autonomous EFC systems, as well as DSRC-based EFC.
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— For use in diversified tolling environment (in toll roads, inner-urban, inter-urban, etc.).
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— For use in every kind of DSRC-OBE (based on CEN, UNI, ARIB, TTA, and GB/T).
The following items are out of the scope for this TS:
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— Definitions of hardware in the external in-vehicle devices such as GNSS modules, cellular modules, mobile devices, smartphones, etc.
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— Definitions of physical interface between DSRC-OBE and external in-vehicle devices such as USB, Bluetooth, etc.
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— Definition of any ITS service other than EFC.
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— Definition of algorithms for authentication, as well as encryption, and key management.
Applicable DSRC-OBE
When standardizing an application interface between DSRC-OBE and external in-vehicle devices, external in-vehicle devices should be commonly applied for every kind of DSRC-based OBE as shown in Figure 3.
The solid and proven DSRC technology makes it possible for DSRC-OBE to have long product-life that enables DSRC-based EFC to be operated still in the
future.
On the other hand, each component of external in-vehicle devices has been developed year by year to cope with user’s demands on high performance,
as well as multi-functional devices; therefore, they have shorter product-life rather
than DSRC-OBE. Once an application interface is standardized, DSRC-OBE can be used continuously for diversified EFC environment with enhanced new external in-vehicle devices. See Figure 4.
