What is the meaning of the diamond-shaped dashed lines on the road?

[ElizabethLynn]

The diamond-shaped dashed lines on the road indicate longitudinal deceleration markings for the traffic lane. Longitudinal deceleration markings consist of a series of diamond-shaped dashed lines parallel to the lane dividing lines. They are typically installed at bridge approaches, turns, and other locations where speed reduction is necessary. Their primary purpose is to create a visual narrowing effect, inducing a sense of pressure that prompts drivers to automatically slow down in areas requiring reduced speed, such as curves and slopes. Road traffic markings can be categorized into three types based on their placement: Longitudinal markings: Markings set along the direction of traffic flow. Transverse markings: Markings set at an angle to the direction of traffic flow. Other markings: Character markings or other forms of markings.