Posted speed limits
Ride Aware® Drive Aware® displays the speed limit of the road you are driving on (where available within the UK and Ireland), as supplied by OpenStreetMap®. This is separate to the speed limits stored within the Trinity® database of road safety locations and used for informing the user on approach to a hazard or point of information.
The posted speed limit data from OpenStreetMap® is open data, licensed under the Open Data Commons Open Database License (ODbL) by the OpenStreetMap Foundation (OSMF).
© OpenStreetMap contributors
Ride Aware® Drive Aware® posted speed limit data is made available under the Open Database License: http://opendatacommons.org/licenses/odbl/1.0/. Any rights in individual contents of the database are licensed under the Database Contents License: http://opendatacommons.org/licenses/dbcl/1.0/
Read more about OpenStreetMap here and get involved with this excellent project if you can. You can create a free account there and add or update any of the map details and features as required.