apprentice
asphault
authority
barracade
blacktop
blue
car
caution
clothing
collar
construction
crew
directing
drive
employment
female
gesture
girl
hand
hard
hardhat
hat
job
learning
occupation
orange
people
person
public
reflective
road
safety
sign
signal
stop
street
teen
teenager
traffic
transportation
utility
vehicle
vest
warning
woman
work
worker
working