Overview
CEN ISO/TS 18234-7:2013 (TPEG1‑PKI) defines the TPEG Parking Information Application (PKI) for delivering standardized parking information over multiple channels. It is part of the ISO/TS 18234 series for traffic and travel information (TTI) using the TPEG1 binary data format. The specification targets distribution via digital broadcasting and internet technologies, enabling parking data to be presented textually, voiced or graphically in navigation and ITS applications.
Key topics and technical requirements
- Application identification & framing: rules for identifying PKI as a TPEG1 service and the Service Component Frame used to encapsulate parking data.
- Message structure and components: standardized ParkingMessage with clearly defined subcomponents such as MessageManagement, ParkingLocation, ParkingSiteDescription, CurrentCapacity, ExpectedCapacity and Advice.
- Parking information tables: indexed vocabularies and lookup tables (e.g., VehicleType, ParkingType, UserType, FuelType, AvailableFeatures, Reservability, ParkingStatus, PaymentMethod, OpeningHoursType) to ensure consistent semantics and compact binary encoding.
- Binary encoding and data types: normative annexes define the binary SSF and data types, primitive and compound types, and syntactical representation for efficient TPEG1 binary streams.
- TPEG stream and MMC: specification of the TPEG data stream layout and the Message Management Container (MMC) for monolithic and multi-part message delivery.
- Design principles and toolkits: guidance on application-dependent data types, indexing, and toolkits for implementing PKI in receivers and back-end services.
Practical applications
- Real‑time parking availability and capacity updates displayed in in‑vehicle navigation systems, mobile trip‑planning apps and roadside information displays.
- Parking guidance systems that route drivers to available spaces, filter by vehicle type (e.g., EV, disabled), or show payment and opening hours.
- Integration into smart city platforms and traffic management centers to optimize parking utilization and reduce congestion.
- Broadcasting compact parking datasets over DAB/DAB+ or delivering richer PKI content via IP-based services (cellular, Wi‑Fi).
Who uses this standard
- ITS integrators, OEM navigation system developers and map/data providers.
- Broadcasters and content providers delivering TTI services.
- Parking operators, municipalities and smart‑city platform vendors.
- Mobile app developers and traffic management centers implementing parking guidance and analytics.
Related standards
- Other parts of the ISO/TS 18234 / CEN ISO/TS 18234 TPEG1 series (traffic & travel information applications and binary format specifications) - used together to implement full TTI services.
Keywords: TPEG1, TPEG1‑PKI, ISO/TS 18234‑7, parking information, intelligent transport systems, traffic and travel information, binary data format, parking capacity, parking guidance.
