Use and loading
If the driveway is used by both household cars and a work vehicle, specify their sizes and expected use before a design is priced.
Why it matters for your tarmac surfacing: Describe the normal and occasional use of the area so the construction is assessed for its intended duty. For tarmac surfacing, it can affect excavation, compaction, course depths, drainage, edge support and the handover programme.
Useful photograph: the complete usable area with typical parking or movement space visible.