Abstract: Techniques for voice announcements over communications paths in siren systems are provided. In one aspect, a siren activation sequence including an audio identification sequence may be received at a siren alert site controller over a data communications channel of a first communications path. The audio identification sequence may be extracted from the siren activation sequence. A first combined audio signal may be received at the siren alert site controller over a voice communications channel of the first communication path. It may be determined that the first combined audio signal includes the audio identification sequence. The audio identification sequence may be extracted from the first combined audio signal to create a first audio signal. The first audio signal may be played over a siren controlled by the siren alert site controller.

Abstract: Methods, apparatuses, systems, and computer program products for providing dangerous driving weather messages in a tile-based system are provided. An example method comprises receiving one or more measurements of one or more weather parameters for a geographic area. The geographic area is represented by a plurality of tiles. The method further comprises processing at least one of the measurements of at least one of the one or more weather parameters to determine a dangerous driving weather score for at least a first tile of the plurality of tiles; identifying a first tile of the plurality of tiles that is experiencing dangerous driving weather based on the dangerous driving weather score for the first tile; generating a dangerous driving weather message; and providing the dangerous driving weather message. The dangerous driving weather message comprises a timestamp, a list of one or more affected tile identifiers, an alert type, and alert information.