| What type of sign should you choose? It depends on the speed
of traffic and the size of the characters. Below is a handy chart
to help you determine which display is right for your application.
Please CALL US with any questions, we're here to help you: 1-800-325-4904
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Someone traveling
in a car at...
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Needs this
MRLD
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Then select a sign with
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MPH
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Ft./sec.
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Ft./sec.
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Character Size(in)
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Lateral offset(ft)
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75
70
65
60
55
50
45
40
35
30
25
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110
103
95
88
81
73
66
59
51
44
37
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605
565
524
484
444
403
363
323
282
242
202
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20
19
17
16
15
13
12
11
9
8
7
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0-53
0-50
0-46
0-43
0-39
0-35
0-32
0-28
0-25
0-21
0-18
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| NOTE:
MRLD (Minimum Required Legibility Distance) is the minimum distance
required for a sign to be readable. This is based on the Legibility
Index (LI). In this table an LI=30 is used. This means that for
each 1-in of character height, a sign can be read up to 30-ft. For
example, with LI=30, a 10-in character is readable up to 300-ft
(30 x 10). Until recently, the LI=30 is based on someone with 20/40
vision. |
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