attention
background
beware
black
blue
careful
caution
city
crossing
crossover
crosswalk
direction
drive
footpath
guidance
icon
information
metal
motion
nobody
outdoors
pedestrian
people
post
protection
public
red
road
roadsign
roadway
safety
sign
signal
signpost
sky
slow
speed
street
symbol
traffic
transport
transportation
urban
vertical
walk
warning
way
white
zebra
zone