Mapping lane information and turn lanes in Malaysia

[GRABOSM]

Objective: The goal is to improve the road attributes related to lane guidance. We'll be reviewing and mapping missing lanes and turn lanes information in major intersections (motorways, trunk, primary, secondary, and tertiary).

Regions we are reviewing/mapping:
Starting with the following city [cities]:

• Klang Valley

Workflow:

We'll be following OSM (https://wiki.openstreetmap.org/wiki/Key:turn,[ https://wiki.openstreetmap.org/wiki/Lanes](https://wiki.openstreetmap.org/wiki/Lanes)) global and local policies, along with any other guidelines as appropriate.
Apart from the tags that refer to turn lanes and lane count information, in some specific situations, we will also use:

• change:lanes=* on the OSM way, to indicate that there is a lane change restriction, as described here: https://wiki.openstreetmap.org/wiki/Key:change

• lane_markings=no on the OSM way, for existing information, where there are no markings that separate the individual lanes of the road (https://wiki.openstreetmap.org/wiki/Key:lane_markings)

We will update the list if needed.

If we encounter situations where highway_links are added without any physical divider, we would like to make the necessary geometry corrections, as in the example below:

Location: 3.1238772, 101.4676295

Validation: We'll be following the validation guidelines mentioned in our wiki: https://wiki.openstreetmap.org/wiki/Grab#Quality_Process

Changeset Comment: Mapping turn lanes https://github.com/GRABOSM/Grab-Data/issues/129 #grabosm

Source: Satellite imagery, KartaView/Mapillary

Filter:

Plugins: Turn Lane Editor, Lanes and Road Attributes map paint style

Edge cases: None at the moment, we'll post it as a subsequent comment if need be.

Team: The Grab Data Team