What does the sawtooth line on the highway mean?

[Ingrid]

The sawtooth line on the highway refers to longitudinal deceleration markings, which serve as a deceleration warning and are commonly used on curves. Below are the relevant details: 1. Definition of longitudinal deceleration markings: These markings consist of a series of diamond-shaped dashed lines parallel to the lane dividing line. They are typically placed at bridge approaches and curves. 2. Function of longitudinal deceleration markings: Their primary purpose is to create a visual narrowing of the lane, inducing a sense of pressure on drivers, prompting them to automatically reduce speed at locations requiring deceleration, such as curves or slopes. When vehicles pass through sections with longitudinal deceleration markings, drivers will subjectively perceive the lane as gradually narrowing, leading them to take proactive deceleration measures and proceed slowly. This effectively prevents drivers from slamming on the brakes just before the stop line.