HERE Optimized Map for Analytics (OMA) Data Specification
• Imported Types from HERE Map Content
• Elevation
• Slope
• Accessible By
• Functional Class
• ISO Country Code
• Overpass Underpass
• Physical
• Special Traffic Area Category
• Road Topology and Geometry Attributes
• Segment
• Node
• Access Permission
• Access Restriction
• Construction Status
• Environmental Zone
• Gate
• Intersection Category
• Lane Category
• Low Mobility
• Permitted Driving Manoeuvre
• Physical Lane Count
• Restricted Driving Manoeuvre
• Short Construction Warning
• Special Explication
• Speed Category
• Speed Limit
• Supplemental Geometry
• Through Lane Count
• Through Route
• Toll Structure
• Traffic Message Channel Code
• Transport Protocol Expert Group
• Travel Direction
• Urban
• Usage Fee Required
Optimized Map for Analytics Data Specification

## Message Summary

Link Accuracy indicates if the geometry associated with a segment meets specific height, slope or positional accuracy.

Include: schema_adas_link_accuracy.proto

## Properties

Field Type Label Description
link​_​accuracy sint32

Value from 0 ~ 5, indicates if the geometry associated with a segment meets specific height, slope or positional accuracy.

segment​_​identifier string

An identifier for the referenced segment in the format of domain:system:type:id, for example, "here:cm:segment:532172642". This property is unique in a catalog.

segment​_​start​_​offset double

Values range from [0.0 - 1.0]. Relative to the segment's orientation - not necessarily the overall chain orientation.

segment​_​end​_​offset double

Values range from [0.0 - 1.0]. Relative to the segment's orientation - not necessarily the overall chain orientation.

segment​_​inverted bool

The referenced segment is inverted in relation to the chain.

attribute​_​orientation string

The attribute's orientation relative to the chain's first-to-last orientation.

multi​_​segment​_​id string

Specifies how an attribute is assigned to a linear chain of one or more Segments.

A "linear chain" is a sequence of Segments that connect geometrically from start to end. Segments in a linear chain do not cross one over the other. A linear chain can form a loop in which case the first node of the start segment coincide with the last node of the end segment.

In general a multi-segment chain, has an overall first-to-last orientation that is independent of the the first-to-last orientation of each component Segment. Each component Segment in the chain will either have the same first-to-last orientation as the chain, or its orientation will be inverted relative to the chain.

It is critical to differentiate the orientation of each component segment from the overall orientation of the chain.

For example, it is possible that the first Node of a segment chain is the last Node of that chain's first segment. Likewise, the last Node of the chain can be the first Node of the chain's last segment.

The simple case consists of a single segment. In this case the chain and the segment have the same orientation.

In the multi-segment case, the chain orientation is independent of the individual segment orientations.

multi​_​segment​_​position int32

Segment's position in the multi-segment chain.

partition​_​name string

Quadkey (HERE tiling) for the current partition.