What are the use cases to have both TMC and OpenLR in the same Flow (Detailed) feed?

The possibility to have have TMC and OpenLR in a single flow feed facilitates different use cases on the client side.

Clients that are operating a hosted traffic service can serve TMC-only, OpenLR-only, or TMC-or-OpenLR (hybrid approach) devices from a single B2B feed.

The vast majority of all TMC links can also be represented as OpenLR location reference.

However, in some cases the encoding is not possible. For that reason clients that intend to use the hybrid approach need to ignore all flow messages with only TMC information.

These stretches are covered by other flow messages with only OpenLR location information.

The following table outlines the rules by device requirement that need to be applied to cover all necessary flow segments.