Traffic API Developer's Guide

Traffic Tiles with DLR

The user wants to obtain traffic tiles with a Dynamic Location Reference (DLR) around a location in Berlin. Since a road in that area is not TMC-coded, DLR location referencing will be used to provide the required traffic information.

Request

The code block below demonstrates a request that returns only DLR information:

https://tiles.traffic.cit.api.here.com/traffic/6.0/tiles/quadkeytraffic
  ?&app_id={YOUR_APP_ID}
  &app_code={YOUR_APP_CODE}
  &quadkey=120210233222203102
  &locationreferences=shp

Response

The response is a PNG traffic flow tile overlay, as shown below.

DLRs appear in arbitrary places depending on traffic conditions. It is possible that the request may not return any DLRs. For this example, the response tile is in PNG format. DLRs are only used for small parts of roads, hence the response image only covers those parts.

Figure 1. Request Traffic Tiles with DLR A traffic flow tile request with DLR