Kennzeichen NRW amp Niedersachsen is a free utility mod for Windows designed for Bus Simulator 21, enhancing the gaming experience by incorporating realistic license plates from North Rhine-Westphalia and Lower Saxony. It allows players to select between narrow or normal fonts, accommodating special characters such as Ä, Ö, Ü, E, and H. This feature adds authenticity and depth to the simulation, enabling players to customize their virtual vehicles with genuine regional identifiers.

The structure of the license plates follows a specific format, where the first part represents the district (1 to 3 characters), followed by any letter (1 to 2 characters) and a digit (1 to 4 characters). Additionally, players can include an 'E' for electric vehicles or an 'H' for vintage cars, with a maximum of 8 characters allowed. This mod not only enriches the gameplay but also provides an engaging way to connect with the local culture represented in the game.