Letter Visibility The average billboard takes 3 to 5 seconds to read. This means that on the freeway most billboard copy should be visible and readable at least 500 feet away. A highway sign is best if visible from at least 300 feet. The above image shows how 2, 3, and 4 foot text would appear from 300 feet away. For accuracy, sit approximately arm's length away from the screen. The above image shows how 2, 3, and 4 foot text would appear from 500 feet away. For accuracy, sit approximately arm's length away from the screen. Letter Height Readable Distance Time to Read at 60 mph 6" 60' Less than 1 second 9" 90' 1 second 12" 120' 1.25 seconds 18" 180' 2 seconds 24" 240' 2.5 seconds 36" 360' 4 seconds 48" 480' 5.25 seconds Please, call toll-free, 800-221-4114, with any questions. meadow@meadowoutdoor.com sales@meadowoutdoor.com