In short
Every Driving Routes route can be downloaded for offline use — maps, polylines, waypoints and voice instructions all work without a cellular signal. Downloads are included with every subscription.
Frequently asked questions
Do I need a data signal to use Driving Routes?
Not if you download the route first. Tap the download icon on the route page before you leave home.
How big are the downloads?
Typical route packs are 5–25 MB — small enough to download over cellular.