30
alert
asphalt
attention
background
bid
circle
city
closeup
control
convex
direction
european
information
kilometer
kmh
kph
lane
limit
limited
marking
maximum
mile
number
paint
plastic
prohibition
regulation
restriction
road
roadsign
roadway
safety
sign
signature
slow
speed
speeding
street
surface
symbol
thirty
traffic
transport
transportation
urban
vehicle
warning
way
zone