A road surface can be defined using the one of the following file formats:

• 6.11.4.1. Road Data File (*.rdf)
• 6.11.4.2. 2D Road Data (*.rdf)
• 6.11.4.3. 3D Road Data (*.rdf)
• 6.11.4.4. CRG Road Data (*.crg)
• 6.11.4.5. RGR Road Data (*.rgr)