Typography
Limit your use of signage typography to a single style or
“font”, with a bold weight for primary messages, and a medium or
“roman” weight for secondary messages. Use of a single type style
unifies all signs into a recognizable system, and simplifies the
replacement of messages. The typestyle you choose must also meet
criteria mandated by the Americans
with Disabilities Act.
Sans Serif typestyles are fonts with even "strokes" and
no thick/thin tips or tails on the characters. An example would be Helvetica.
A Serif typestyle would have "extensions" of varied widths
from the tips of each character stroke, such as Times Roman. Examples
of Bold and Roman weight fonts are below.
For historic buildings, it may be more appropriate to adopt a more
classic typestyle - Sabon Bold for primary messages and Sabon Regular
for secondary messages, for example.