What type of sign should I 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:
Someone traveling in
a car at
|
Needs this
MRLD
|
Then select a sign with
|
| MPH / KMH |
Ft./sec. |
Ft./sec. |
Character Size(in) |
Lateral offset(ft) |
75/130
70/120
65/110
60/100
55/90
50/80
45/70
40/60
35/55
30/50
25/35
|
110
103
95
88
81
73
66
59
51
44
37
|
605
565
524
484
444
403
363
323
282
242
202
|
20
19
17
16
15
13
12
11
9
8
7
|
0-53
0-50
0-46
0-43
0-39
0-35
0-32
0-28
0-25
0-21
018
|
NOTE: MRLD (Minumum Required Legibility Distance) is the min. 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 ht, 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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