architectural
beware
bridge
bypass
careful
caution
circle
concrete
construction
countryside
crossing
directions
drive
driver
entrance
flow
freeway
high
highway
label
landscape
law
limit
moving
outdoor
overpass
passage
perspective
pillar
pole
road
route
rural
safety
sign
signal
speed
street
structure
suspension
symbol
traffic
transit
transport
transportation
travel
urban
viaduct
warning
way