advise
airport
alert
attention
board
business
careful
caution
down
escalator
floor
go to
icon
info
information
internet
lift
lines
motion
move
people
public
recommendation
ride
safety
search
shopping
shopping mall
sign
single
speed
stair
staircase
stairway
step
stick
success
symbol
technological
transportation
vintage
walk
walkway
warn
web