Street Layer. Can I turn it off? What about updates/inaccuracies? (And other common questions)

How to make the most of the street layer shown in Terrain Navigator Pro 9.


Starting with version 9 of Terrain Navigator Pro, a street layer is available for overlaying on the topographic maps and aerial photos. This allows you to see streets that may have been added or changed since the base map was created (or the aerial photo was taken.) This also allows you to see the street names on the aerial photos.

Version 11 added Street Map (and Outdoor Map) types, which are generated by a different method, and can be merged with topographic maps and aerial photos to create a blended map display.

How was this layer collected and how current is it?
This street layer is compiled from two popular sources for current road maps and address searching. It is updated roughly four times a year. Errors should be reported to

How do I turn off the street layer within Terrain Navigator Pro?
As with any layer, you will find the ability to show and hide it by opening the View menu and choosing Layer Size/Visibility. In the list of available layers, turn off Streets. Note that streets, labels (street names) and trails can be hidden independently using SubLayers. 

Alternatively, you can use the Layer Size/Visibility button on the toolbar; or even use the show/hide all layers button - to quickly toggle between the base map and the map with the various layers (including streets) overlaid.

When I have the street layer turned on, Terrain Navigator Pro operates sluggishly. Is this normal?
Yes. Due to the amount of processing required, you may see some performance degradation when a complex street system is being overlaid the maps. To improve performance, use the Layer Size/Visibility control in the View menu to turn off unneeded layers.

Can I change the color of the streets? How about the sizing?
Yes. See the options found by opening the File menu, Preferences, Streets. There you will find color options (for display on topographic map and aerial image types) and a sizing option. This base thickness is also adjusted using Layer Size/Visibility.

One tip regarding sizing: In the Layer Size/Visibility window, un-check the option to "conform layer size to map scale" this will prevent the roads and text labels from sizing larger as the zoom level/scale is increased.

I need to use TNP offline. How do I download the streets so that they remain available when I do not have an Internet connection?
Open the File menu and choose Manage Street Downloads. There you can download the street and address information for the entire state, or for a specific county.

General Questions (FAQs) and How-To Answers

  1. Getting Started with Terrain Navigator Pro
  2. Coordinates: Definitions and Overview
  3. What are Layers? What's the difference between markers, routes, tracks, etc.?
  4. Organizing Layers with Projects
  5. Managing Projects, Splitting the Default Project, Project Synchronization to TNP Mobile/Web, and Other Tips
  6. How do I obtain an area measurement?
  7. Street Layer. Can I turn it off? What about updates/inaccuracies? (And other common questions)
  8. What is a MapPack and how do I use it to show photos when TNP has no Internet Connection?
  9. Transferring Project Layers to a new PC
  10. Red Triangles on the maps. Can I toggle them off? (And other common questions)
  11. Apple Mac OS and Terrain Navigator Pro
  12. How to Disable Registration and Subscription Renewal Notices
  13. Adding Land Use, Boundaries, and other GIS Information to TNP
  14. Using Existing Markers to Create a Route in TNP
  15. Creating (or Projecting) Routes via Bearing/Distance (metes and bounds) - by Azimuth or Quadrant bearings.
  16. Adding Waypoints within a Route; Appending Routes Together
  17. My Markers, Routes, etc., are way too big (or too small.) What's going on?
  18. Attaching Maps to an Email
  19. How do I make TNP open my map every time it starts?
  20. Recording 3-D Video Clips
  21. Keyboard Shortcuts
  22. Error Loading Polygon or Error Loading GeoPin when TNP starts.
  23. TNP System Requirements
  24. What Are the Benefits Included in the Annual Subscription?
  25. Video and Printer Driver Updates: How to apply them to improve Terrain Navigator
  26. Repairing a Corrupt Map Engine (black maps, not responding, etc.)
  27. Google Earth doesn't interface properly with TNP

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