How many types of distance confirmation lines are there?

[McWalker]

There are 3 types of distance confirmation lines. Here is some relevant information about vehicle distance: Safety distance: When driving on highways, if the vehicle speed exceeds 100km/h, the safe distance should be more than 100 meters. When the vehicle speed is above 60km/h, the safe distance should equal the speed value (e.g., 80km/h requires 80 meters). For speeds at 50km/h, the safe distance should not be less than 50 meters. Influencing factors: The size of vehicle gauge directly affects safety and stability on tracks. If too large, it increases internal offset, reduces effective body width, increases vehicle deflection, and consequently requires higher design strength.