The table below provides measurements at appropriate distances to help insure easy reading of signs.
Distance
(feet)
|
Letter Width
(inches)
|
Letter
Height
(inches)
|
Number of words at speed 30
|
Number of words at speed 40
|
Number of words at speed 50
|
Number of words at speed 60
|
50
|
3/8
|
1-3/4
|
4
|
2
|
1
|
0
|
100
|
3/4
|
3-1/2
|
8
|
5
|
4
|
3
|
200
|
1-3/8
|
7
|
15
|
11
|
8
|
6
|
300
|
2-3/16
|
11
|
22
|
16
|
13
|
10
|
400
|
2-7/8
|
14
|
30
|
22
|
17
|
14
|
500
|
3-1/2
|
17-1/2
|
38
|
28
|
22
|
18
|
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