  |
|
|
| When using mixed case letters on street name signs,
the initial capital letter is not vertically centered on the panel
as is common practice when all uppercase letters are used. The space
between the baseline and the bottom of the sign panel is greater
than the distance from the top of the panel to the top of the initial
capital letter. This relationship should be consistent whether the
legend contains descenders on not. These proportions are illustrated
below (Figures 1 and 2). |
|
|
|
Figure 1.
Street name panel with sheeting placed edge to edge for maximum field |
|
|
|
For typical street name signs, it is more effective
to wrap the entire blade with sheeting to create a larger field for the
legend. In compliance with section 2D.38 Street Name Sign (D3), the most
appropriate layout uses a 6 inch cap-height with a 2X (12 inch) blank
or a 4 inch cap-height with an 8 inch blank (Figure 1). The minimum acceptable
layout (Figure 2) uses a 6 inch cap-height with a 10 inch blank and a
4 inch cap-height with a 6.66 inch blank to appropriately accommodate
the descender.
Figure 2.
The minimum recommended blade size for a mixed case sign with 6
inch initial capital letter height is 10 inches tall and does not include
a border. The legend alignment is dimensioned in the top example (FIgure
19b.) with the legend alignment shown proportionally in the bottom example.
These examples demonstrate ClearviewHwy 1-W and ClearviewHwy 2-W, with same size
and alternate superscript road type designation. Street name signs using ClearviewHwy
1-W and ClearviewHwy 2-W with mixed cased legends will use more space vertically
than all uppercase letters. However, the mixed case will improve both legibility
and ease of recognition. |
|
|
