What is the meaning of the diamond-shaped dashed lines on the road?
1 Answers
They are longitudinal deceleration markings for vehicle lanes. Typically installed at bridge approaches and turning points, the diamond-shaped dashed lines gradually widen from 10cm to 30cm. This is one of the new markings added to the national standard for road traffic signs (GB5768.2-2009) and is an internationally recognized marking. The diamond-shaped dashed pattern is designed to visually make drivers perceive the lane narrowing, prompting them to actively reduce vehicle speed. The spacing of diamond-shaped markings varies, similar to zebra crossings on straight road sections. Since vehicles travel faster on straight roads, the diamond-shaped markings are set farther apart, usually with two markings to reinforce driving reminders. Road traffic markings can be categorized into three types based on function: Indicative markings: Markings that indicate vehicle lanes, driving directions, road edges, pedestrian crossings, etc. Prohibitive markings: Markings that inform road users of special regulations such as compliance, prohibition, or restrictions. Warning markings: Markings that alert road users to special road conditions, prompting them to be vigilant and prepared for preventive or responsive measures. Road traffic markings can be categorized into three types based on installation method: Longitudinal markings: Markings set along the direction of travel. Transverse markings: Markings set at an angle to the direction of travel. Other markings: Character markings or other forms of markings. Road traffic markings can be categorized into four types based on form: Lines: Solid or dashed lines painted on the road surface, curbs, or vertical surfaces. Characters: Text, numbers, and various graphics or symbols painted on the road surface. Raised pavement markers: Reflective or non-reflective objects installed on the road surface to indicate lane boundaries, edges, diverging or merging lanes, curves, hazardous sections, changes in road width, or obstacles. Delineators: Reflective posts (or reflectors) installed on both sides of the road to indicate the direction of the road or the outline of the vehicle lane boundaries.
