ADAS Curvature, Height and Slope represents a more detailed representation of the road geometry compared to regular geometry. For links that stretch across multiple tiles, this link information is replicated into each of the tiles.
The HPX, HPY and HPZ values are listed from reference node to non-reference node. For a given driving direction this needs to be taken into account: If traveling towards the reference node (like indicated by a negative link ID in the route or route match response) then the order needs to be reversed

Attribute	Description
LINK_ID	Permanent link ID. Positive 64 bit Integer that globally identifies the road, carto or building footprint link, also across map releases. Link IDs are never reused.
HPX	High precision longitude coordinates [10^-7 degree WGS84] along the link. Comma separated. Each value is relative to the previous.
HPY	High precision latitude coordinates [10^-7 degree WGS84] along the link. Comma separated. Each value is relative to the previous.
HPZ	High precision coordinate heights [cm above WGS84 ellipsoid] along the link. Comma separated. Each value is relative to the previous.
SLOPES	Vertical road direction [10^-3 degree] at coordinate points along the link, when driving from Reference Node. Comma separated. Each value is relative to the previous. Missing values are represented as NULL or as 1000000000.
HEADINGS	Horizontal road heading [10^-3 degree] at coordinate points along the link, when driving from Reference Node. Comma separated. Each value is relative to the previous. No values here for the ref/nonref nodes, because they are in the separate fields REFNODE_LINKCURVHEADS and NREFNODE_LINKCURVHEADS.
CURVATURES	Curvature (= 1 / radius) [10^-6 1/meter] at coordinate points along the link, when driving from Reference Node.Comma separated. Each value is relative to the previous. Missing values are represented as NULL or as 1000000000. No values here for the ref/nonref nodes, because they are in the separate fields REFNODE_LINKCURVHEADS and NREFNODE_LINKCURVHEADS.
VERTICAL_FLAGS	Y/N. Specifies for each coordinate point along the link, whether it was introduced on a straight road section, because of height changes. If Y then this shape point exists only in the ADAS link gemoetry, but not in the standard road geometry.
REFNODE_LINKCURVHEADS	Curvatures at the reference node of the link, when driving onto this link. Comma separated list of triples neighbor-link-id:curvature:heading. neighbor-link-id is relative to the link's id.
NREFNODE_LINKCURVHEADS	Curvatures at the non-reference node of the link, when leaving this link. Comma separated list of triples neighbor-link-id:curvature:heading. neighbor-link-id is relative to the link's id.
BUA_ROAD	Identifies a link inside the built up area of a given city or settlement as primarily identified by the Built-Up Area signs. 1: BUA Road. 2: BUA Road (positive direction of travel). 3: BUA Road (negative direction of travel). 4: Not a BUA Road.
BUA_ROAD_VERIFIED	Y/N. Indicates if the link has been verified for Built Up Area Roads attribution as primarily identified by the Built-Up Area signs.
LINK_ACCURACY	Indicates if the geometry associated with a link meets specific height, slope or positional accuracy. 1: Indicates that the geometry associated with a link meets ADAS accuracy specifications but the absolute height and slope information is not available on this link. 2: Indicates that only the 3D attributes of a link (absolute height and slope) meet ADAS-compliant accuracy, but the geometry associated with the link (2D) does not meet the ADAS compliant accuracy. 3: Indicates that the geometry associated with a link as well as the 3D attributes of a link (absolute height and slope) meet ADAS compliant accuracy. 4: Indicates that the 3D attributes of a link (absolute height and slope) does not meet ADAS-compliant accuracy, and also the geometry associated with the link (2D) do not meet the ADAS compliant accuracy. 5: Indicates that the geometry associated with a link meets ADAS accuracy specifications but the absolute height and slope information do not meet the ADAS compliant accuracy.

Attribute

Description

LINK_ID

Permanent link ID. Positive 64 bit Integer that globally identifies the road, carto or building footprint link, also across map releases. Link IDs are never reused.

HPX

High precision longitude coordinates [10^-7 degree WGS84] along the link. Comma separated. Each value is relative to the previous.

HPY

High precision latitude coordinates [10^-7 degree WGS84] along the link. Comma separated. Each value is relative to the previous.

HPZ

High precision coordinate heights [cm above WGS84 ellipsoid] along the link. Comma separated. Each value is relative to the previous.

SLOPES

Vertical road direction [10^-3 degree] at coordinate points along the link, when driving from Reference Node. Comma separated. Each value is relative to the previous. Missing values are represented as NULL or as 1000000000.

HEADINGS

Horizontal road heading [10^-3 degree] at coordinate points along the link, when driving from Reference Node. Comma separated. Each value is relative to the previous. No values here for the ref/nonref nodes, because they are in the separate fields REFNODE_LINKCURVHEADS and NREFNODE_LINKCURVHEADS.

CURVATURES

Curvature (= 1 / radius) [10^-6 1/meter] at coordinate points along the link, when driving from Reference Node.Comma separated. Each value is relative to the previous. Missing values are represented as NULL or as 1000000000. No values here for the ref/nonref nodes, because they are in the separate fields REFNODE_LINKCURVHEADS and NREFNODE_LINKCURVHEADS.

VERTICAL_FLAGS

Y/N. Specifies for each coordinate point along the link, whether it was introduced on a straight road section, because of height changes. If Y then this shape point exists only in the ADAS link gemoetry, but not in the standard road geometry.

REFNODE_LINKCURVHEADS

Curvatures at the reference node of the link, when driving onto this link. Comma separated list of triples neighbor-link-id:curvature:heading.
neighbor-link-id is relative to the link's id.

NREFNODE_LINKCURVHEADS

Curvatures at the non-reference node of the link, when leaving this link. Comma separated list of triples neighbor-link-id:curvature:heading.
neighbor-link-id is relative to the link's id.

BUA_ROAD

Identifies a link inside the built up area of a given city or settlement as primarily identified by the Built-Up Area signs.
1: BUA Road.
2: BUA Road (positive direction of travel).
3: BUA Road (negative direction of travel).
4: Not a BUA Road.

BUA_ROAD_VERIFIED

Y/N. Indicates if the link has been verified for Built Up Area Roads attribution as primarily identified by the Built-Up Area signs.

LINK_ACCURACY

Indicates if the geometry associated with a link meets specific height, slope or positional accuracy.
1: Indicates that the geometry associated with a link meets ADAS accuracy specifications but the absolute height and slope information is not available on this link.
2: Indicates that only the 3D attributes of a link (absolute height and slope) meet ADAS-compliant accuracy, but the geometry associated with the link (2D) does not meet the ADAS compliant accuracy.
3: Indicates that the geometry associated with a link as well as the 3D attributes of a link (absolute height and slope) meet ADAS compliant accuracy.
4: Indicates that the 3D attributes of a link (absolute height and slope) does not meet ADAS-compliant accuracy, and also the geometry associated with the link (2D) do not meet the ADAS compliant accuracy.
5: Indicates that the geometry associated with a link meets ADAS accuracy specifications but the absolute height and slope information do not meet the ADAS compliant accuracy.