What are the three types of distance confirmation lines?

[VonMatteo]

Here are the three types of distance confirmation lines: 1. White zigzag distance confirmation line: The total width of the white zigzag distance confirmation line is 300cm, with a line width of 40cm or 45cm. Starting from the confirmation base point at 0m, a line is set every 5 meters, with two lines forming a group, spaced 50m apart, and repeated for five groups. Multiple groups can also be set based on site conditions. 2. White semicircular distance confirmation line: The white semicircular distance confirmation line has a hemisphere radius of 30cm, set at 50m intervals, and is generally set continuously within a certain road section. 3. White rectangular distance confirmation line (highway distance confirmation marking): Used in conjunction with distance confirmation signs, it is set in sections where overtaking is frequent, accidents are prone to occur, or other needs arise. The purpose of the highway distance confirmation marking is to remind drivers to maintain a safe driving distance from the vehicle ahead when seeing this marking, to avoid traffic accidents.