access

attention

background

billboard

blank

board

bright

caution

color

concept

correct

danger

design

direction

element

flat

graphic

guide

hospital

icon

illustration

information

inscription

isolated

mark

message

notice

object

panel

placard

plate

prohibited

red

regime

right

road

route

safety

sanitary

sign

signpost

special

symbol

the

traffic

travel

warning

way

white

with

zone