How much over the speed limit is driving at 90 in an 80 zone?

[Ron]

Driving at 90 in an 80 zone is 12.5% over the speed limit. According to traffic regulations, exceeding the speed limit by 10% but less than 20% results in 3 penalty points and a fine of 200 yuan. No penalty is imposed for exceeding the speed limit by less than 10%, meaning if the speed does not exceed 80 km/h, there will be no fine. Speeding refers to driving a motor vehicle or non-motor vehicle on the road at a speed exceeding the designated limit for that section. Speeding is a traffic violation that is more likely to lead to serious accidents. The braking distance of a vehicle is mainly constrained by speed; due to inertia, the faster the speed, the longer the braking distance, increasing the likelihood of an accident.