The Traffic API allows you to obtain a pre-rendered map tile reflecting traffic conditions. Each tile is a PNG overlay that uses line and color to indicate how freely traffic flows in the corresponding geographic area.
HERE has changed the way traffic tiles are served. Live traffic tiles have been deprecated in the Traffic API and are now delivered by the Map Tile API infrastructure. Documentation relating to live traffic tiles is part of the Map Tile API documentation.
This does not affect traffic pattern tiles, which continue to be served by the Traffic API.
By default, the service uses specific color mappings that match a traffic scale measured in Jam Factors, where 0 means "free flowing" and 10 means "completely obstructed". The following table describes the overlay colors, which follow a standard configuration to map Jam Factors to color.
|Green||Free flow of traffic: 0 <= JAM_FACTOR < 4|
|Yellow||Sluggish flow of traffic: 4 <= JAM_FACTOR < 8|
|Red||Slow flow of traffic: 8 <= JAM_FACTOR < 10|
|Black||Traffic stopped flowing or road closed: JAM_FACTOR = 10|
Note that customized profiles may be defined, where color mappings for traffic flow differ.
Traffic flow tiles can be cached for a limited period of time (up to three minutes), as the data must be fresh to represent the current traffic conditions reliably.