What is the name of the line with serrations next to the solid line?
2 Answers
The line with serrations next to the solid line is called a longitudinal deceleration line. Marking signs: There are many marking signs on highways, each representing different meanings and used in different places to provide various instructions and reminders to passing drivers. The aforementioned line with serrations resembling fishbone lines on both sides is a longitudinal deceleration line, also known as a visual deceleration line. Its main purpose is to remind drivers to slow down ahead to avoid rear-end collisions or other accidents. It may be installed in places such as tunnels, sharp turns, and ramp entrances/exits to prevent traffic accidents. Decelerating vehicles: This type of marking gives drivers on the road a visual impression that the road surface is narrowing. According to normal driver awareness, drivers will slow down at this time and observe roadside signs or indicators. Therefore, this marking can effectively remind drivers that they are approaching a special or dangerous section of the road ahead, requiring them to first slow down and then pay attention to the road conditions.
When you encounter this kind of serrated line while driving, it's commonly called a zigzag marking, a type of traffic warning sign to alert you to slow down ahead. Having driven for over a decade, I often see it at urban intersections or highway exits. Its purpose is to use visual design to instinctively make drivers reduce speed, thereby minimizing accidents. Unlike regular solid lines, the jagged, uneven design of the zigzag marking gives the illusion of an uneven road surface, prompting the brain to react by hitting the brakes—making it very safe. Nowadays, it's installed in many places, such as school zones or before sharp curves. I recommend both new and experienced drivers pay attention to it; don’t mistake it for mere decoration, as ignoring it could lead to fines or minor accidents. Routine road maintenance should also include regular checks for wear and tear, as its effectiveness diminishes if damaged. Overall, though, it’s a great aid for traffic safety.
