What percentage of speeding is not allowed on highways?

[Carrie]

On highways, vehicles exceeding the speed limit by less than 10% will not be penalized or receive demerit points, but will be given a warning. For speeding between 10% and 20%, a fine of 50 RMB and 3 demerit points will be imposed. For speeding between 20% and 50%, a fine of 200 RMB and 3 demerit points will be issued. For speeding between 50% and 70%, a fine of 1,000 RMB and 6 demerit points will be applied. If the speed exceeds 70% over the limit, in addition to a fine of 2,000 RMB, the driver's license will be revoked. Vehicles on highways can travel at speeds of 120 kilometers per hour or higher. Highways typically have four or more lanes with a central divider, and pedestrians and non-motorized vehicles are prohibited from entering. Highways are classified as high-grade roads, designed specifically for high-speed vehicular traffic, with an average annual daily traffic volume exceeding 25,000 passenger cars. All access points are controlled. The construction of highways is aimed at meeting the demands of industrialization and urbanization. With the continuous advancement of automotive technology, the need for highways has grown significantly, aligning with the trends of vehicle lightweighting and increased load capacity.