Requirements: GTA 4 with a patch of version 18.104.22.168 or 22.214.171.124 + GTA 4 ASI Loader
This scripting modification adds to game a full-fledged speedometer which unlike analogs can brag of support of replaceable skins (7 unpretentious skins are included in the delivery package) and possibility of thin setup (for example, you can reposition the sensor on the screen, define a transparency level, select the necessary units of measure). Yes, nearly forgot. By default the script is activated by key press of F12. If you want that the speedometer appeared right after start of GTA 4, change in the configuration file \SpeedoIV\Config.ini value of the Autostart attribute with false to true.
Copy directory \SpeedoIV and the files SpeedoIV.asi, ScriptHook.dll in the root directory with the set game.