The Victorian Government In Australia offers a number of Data API's that would be highly useful to have integrated into the Waze App
https://www.data.vic.gov.au/ which would allow an added depth of information to be added to the map, such as current road speed limit vs actual.
routing around known road events, such as road works or road closures etc...

Specifically things like:
"Road Works and Events Points Snapshot"
https://www.data.vic.gov.au/data/dataset/road-works-and-events-points-snapshot

"Speed Sign Data"
https://www.data.vic.gov.au/data/dataset/speed-sign-data

"Emergency Road Closure Lines Snapshot"
https://www.data.vic.gov.au/data/dataset/emergency-road-closure-lines-snapshot