A lane within a segment. Travel direction of the lane is provided by the segment anchor.
For example, consider a road segment with the following configuration of lanes: bi-directional auto access, a center turn lane in between them, bi-directional bicycle access on the right hand side of the road.
Type: || Regular | Center Turn | Regular | Bike | Bike || Travel Dir: || South | Both | North | South | North || Lane Number: || 1 | 2 | 3 | 4 | 5 ||
This configurations result in three segment anchors:  Range 0.0 - 1.0, RelativeDirection: BOTH  Range 0.0 - 1.0, RelativeDirection: FORWARD  Range 0.0 - 1.0, RelativeDirection: BACKWARD
Lane 2 is published on segment anchor 1. Lane 3 and 5 are published on segment anchor 2. Lane 1 and 4 are published on segment anchor 3.
Attribution is then applied to the lanes as applicable. For example, LaneType=Regular references lanes 1 and 3.
| ||uint32||repeated|| |
Index of the segment anchor to which this attribute applies. 0-based index references to segment_anchor in LanePartition. The RelativeDirection of the segment anchor indicates the travel direction for the lane. List is always length 1.
| ||string|| |
An identifier for the lane in the format of domain:system:type:id, for example, "here:cm:lane:3455277". This property is unique in a catalog.
| ||uint32|| |
Relative position of this lane in the sequence of lanes across the segment range. The ordering is from left to right in the FORWARD RelativeDirection (from the segment's start node to end node). If there are