What is the actual height of a 2-meter height limit on highways?

[BeckettAnn]

Highway height limits of 2 meters are actually a safe passage height, with the actual height being approximately 2.2 meters. Therefore, slightly taller vehicles may barely pass, but this is not recommended as getting caught by traffic cameras will result in fines and penalty points. Typically, small balls are hung on height-limiting gantries as a safety warning—if a vehicle touches these balls, it cannot pass. The purpose of setting up height-limiting structures is often due to bridges, tunnels, or culverts ahead on the road. Below is relevant information about height limits: 1. Purpose: Most height-limiting structures are installed on roads beneath bridges and in front of tunnels, primarily to protect the bridges and tunnels while also serving as a warning to passing vehicles. 2. Standards: The standards for setting road height limits are not uniform. Generally, the clearance height for height-limiting structures on first- and second-class highways should be 5 meters, while for third- and fourth-class highways, it should be 4.5 meters. The original intention of setting height limits is to ensure the safety of drivers and structures.