Traffic signs or road signs are signs erected at the side of or above roads to provide information to road users. The earliest signs were simple wooden or stone milestones. Later, signs with directional arms were introduced.
A signpost is a sign erected:
at the side of a road or canal to provide information to road users.
a fingerpost; a type of directional roadsign with arms or "fingers" pointing out the direction
at the side of a footpath, cycleway or track provide information to cyclists and pedestrians or hikers
any other sign giving directions or location information
commercial common signage on road side