During the planning process (and set up phase of Road Trip Maps), we will ask you for the length and height of your RV.  This is two-fold.

Length - this helps us to filter the campgrounds we choose for you so that your RV can fit.

Height - this information helps us find the best route for your trip.

You can also adjust these settings at any point by accessing Trip Options, located to the right of your trip title. Within Trip Options, select Edit Trip Settings and then select Vehicle Details. Within Vehicle Details, you can adjust your average MPG, fuel settings, as well as adjusting the length and height of your trailer or RV. 

As of now, Road Trip Maps and The Dyrt are GREAT planning tools for camping, but we are not a navigation tool. Please use the tools you know work for you to get you where you need to go, on the best route...safely.