File: Speed.limit.zip ... Site

For example, the RouteProperties.xml file in some simulator files dictates whether the heads-up display (HUD) accurately reflects the physical speed signs on the track. 🛑 Important Security Notice

To narrow this down, did you download or find this file from? Adding Missing HUD Speed Limits via XML - Steam Community File: Speed.Limit.zip ...

Many state and federal agencies publish geographic information system (GIS) shapefiles containing road speed limits. For example, the RouteProperties