The HERE Map Content catalog organizes map data by several versioned layers. A single catalog version number is assigned to the entire catalog. When HERE updates the catalog, its version number is incremented. Catalog layers and partitions can be retrieved by version while preserving consistency between all published content. This allows you to select and process only the data of interest, or to process only specific changes within a layer. For information on using versioned layers, see Layers in theData User Guide
The layers in the HERE Map Content catalog can be thematically grouped as follows:
Roads layers
Lanes layers
Places layers
Buildings layers
Cartography layers
Administrative Areas layers
Rules & Regulations layers
Addressing & Postal layers
Visuals map-references layers
The figure below illustrates the logical relationship among these layers.Figure 1. Overview of the Logical Relationship Among the Layers
The following sections provide a logical diagram and a table summarizing the layers for each layer group in the HERE Map Content catalog.
The Bicycle Attributes layer includes specific attribution applicable to the road network for bicycling, to enable bicycle routing, map display and route guidance.
Complex Road Attributes provides cartographic representations of simple features grouped into aggregated Complex Features for purposes of generalizing geometry.
The Recreational Vehicles Attributes layer provides warning signs and restriction information, which are specific to Recreational Vehicles, leading to increased safety, stress reduction for drivers, and improved ETA (Estimated Time of Arrival) information
The Traffic Patterns layer provides usual traffic speeds for every road segment in the map across 83 countries, for each day of the week and 5-minute segment of the day.
The Electric Vehicle Charging Stations layer publishes Electric Vehicle Charging Stations with additional information and specifications for the charging station.
Places for HERE Essential Map is a built-in layer that contains a sub-set of Places categories and includes location, name, address, phone number and parent-child relations between places.
Publishes "trucking" related Places categories such as truck parking, petrol stations, rest areas etc. Also relevant attributes for these places such as availability of Diesel, Truck Wash, Pay at Pump, High Canopy etc.
Represents the outlines of the base of buildings or man-made structures which can be used for enhanced map display. Building polygons may be aggregated into a grouped structure.
Contains linear and polygonal cartographic features used for map rendering. (e.g., railways, water features, and parks). Administrative boundaries and building footprints are not included.
The Administrative Location Index layer provides HERE Tile IDs for various locations published by the HERE Map Content catalog (Administrative Places layer).
The Administrative Locations layer publishes point locations for administrative areas and includes the drive-to location as well as the polygonal boundary (when existing) of the administrative feature. Entities in this layer are related to entities in Administrative Places layer.
Contains Place-related content - including names of places and the following types of properties: countries (e.g., local currency), administration (e.g., time zones, daylight saving time), and zones (e.g., government codes). This content is duplicated in each tile where it exists.
The Flag Images layer publishes images of flags in .png format. This enables the flag of a country or other administrative area to be displayed when a vehicle enters administrative area. These images are referenced in the Vehicle Regulations layer.
The HERE Vehicle Regulations layer publishes admin-based driving rules that apply to all vehicle types. This content creates the ability to display administrative and country-specific driving rules (e.g., default speed limits), legal requirements (e.g., blood alcohol limit) and general country information (e.g., driving side) at border crossings.
The Address Locations layer contains point locations for addresses (Point Address) and additional detailed addresses within a building (Micro Point Address) such as apartment, floor or suite.
The Postal Area Boundaries layer publishes postal area boundary polygons and centroids of these postal areas. Postal area boundaries are available as non-generalized boundaries (with water holes) and generalized boundaries (without water holes).
The Postal Code Points layer represents center points of address ranges and postal code areas. The layer includes the postal code, the centroid of the postal code, and a reference to the administrative area.
HERE 2D Landmarks are two dimensional representations of significant architectural structures. The 2D Landmarks layer publishes the main attributes of the 2D Landmarks. The actual 2D Landmark files are published in a separate HERE Map Content catalog that will be available soon.
HERE 3D Landmarks are 3D models of prominent landmarks with photorealistic facades such as historic buildings, tourist attractions, high-rise buildings and transportation hubs. The 3D Landmarks layer publishes the main attributes of the 3D Landmarks. The actual models are published in separate HERE Map Content catalog that will be available soon.
Map-references layer publishing which 2D Generalized Junction and 2D Generalized Sign template files apply for selected intersections of the road network. Can be instantiated for a given path through a decision point. The template files are published in a separate HERE Map Content catalog.
