I route by picking a point on the map, Garmin is terrible for inputting addresses and data.
Garmin will eventually correct for your typical speed traveled, and use that when determining routing.
Copilot lets you input your typical speed for generic types of road immediately, this is really good for routing specific to RV usage. I dont know if it has low clearance data or not.
Google maps is the best for current traffic and routing around issues - including stop lights, but it thinks you are a car. My older Garmin has major city traffic feeds only, newer units may have better/larger data source.
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