How is speeding between 10% and 20% in tunnels penalized?

[MacSilas]

For ordinary vehicles on highways, penalties for speeding are as follows: Speeding within 10% of the prescribed speed limit is not penalized for the time being; Speeding between 10% and 20% of the prescribed speed limit incurs a fine of 200 yuan and 3 demerit points; speeding between 20% and 50% of the prescribed speed limit incurs a fine of 200 yuan and 6 demerit points; speeding more than 50% over the prescribed speed limit incurs a fine of 2000 yuan and 12 demerit points. Relevant information about speed limits is as follows: Introduction to speed limits: Speed limits generally refer to the regulation of vehicle speeds within a certain numerical range over a specified length of road. Purpose of speed limits: The main purpose is to preemptively remind drivers to reasonably control their speed in subsequent sections of the road ahead, prevent the dangers of speeding, and ensure driving safety. Speed limits are an indispensable and most important part of road transport safety.