Question
How do I represent Roads and Footpath objects in Revit?
Answer
Slabs are an obvious answer but one could also employ walls as they draw like lines and widths can be set in the family type properties. Use Type Comments to Filter objects out drawn and schedule views. Use View Templates to quickly set up views using the modifed families.
For greatest efficiency create a library template with the 'roads' appropriately named for easy transfer via the Transfer Projects Standards Utility