A traffic sign is a road device that uses words or symbols to
convey a message of guidance, restriction, warning or indication.
Also known as road signs, road traffic signs. In the traffic signs
is generally a safe, eye-catching, clear, bright traffic signs is
the implementation of traffic management, to ensure road traffic
safety, smooth important measures. There are many types of traffic
signs, which can be divided into main signs and auxiliary signs in
various ways. Movable marks and fixed marks; Lighting signs,
luminescent signs and reflective signs; And variable information
signs that reflect the changing driving environment.