According to their functions, road traffic markings can be divided into three categories:
1) Signs: Signs indicating lanes, driving directions, road edges, sidewalks, etc.
2) Prohibition markings: markings indicating the special regulations such as compliance, prohibition and restriction of road traffic;
3) Warning sign: a sign to remind road users to understand the special conditions on the road, to be vigilant and to prepare preventive or emergency measures. ?
Road traffic markings can be divided into three categories according to the setting method:
1) Longitudinal markings: markings set along the road traffic direction; ?
2) Transverse marking: the marking set at a certain angle with the road running direction;
3) Other marking lines: character marks or other marking lines. ?
Road traffic signs can be divided into four categories according to their shapes:
1) line: solid line or dotted line drawn on pavement, kerb or facade; ?
2) Characters: characters, numbers, various figures and symbols painted on the pavement; Marker classification
3) Prominent road signs: reflective or non-reflective bodies installed on the road surface, which are used to mark the lane boundary, edge, confluence, bend, dangerous road section, road width change, road obstacle position, etc.
4) delineator: Reflected beams (or reflectors) installed on both sides of the road to indicate the direction of the road and the boundary outline of the roadway.