| Letter Height | Maximum Readable Distance | Maximum Readable Distance From Moving Vehicle |
| 3" | 100' | 30' |
| 4" | 150' | 40' |
| 6" | 200' | 60' |
| 8" | 350' | 80' |
| 10" | 450' | 80' |
| 12" | 450' | 100' |
| 15" | 630' | 120' |
| 18" | 750' | 180' |
| 24" | 1000' | 240' |
| 30" | 1250' | 300' |
| 36" | 1500' | 360' |
Use this table as a guide when designing your banner. The last column represents the maxumim readability from a moving automobile traveling at an approximate speed of 35 MPH.