How to Determine Vehicle Speeding
4 Answers
Determining vehicle speeding is based on exceeding the speed limit. For example, if the highway speed limit is 80 km/h and the driving speed is 92 km/h, (92-80) divided by 80 multiplied by 100% equals 15%, which means the vehicle is speeding by 15%. Article 86 stipulates penalties for vehicles violating speed limits on roads as follows: 1. If the speed exceeds the limit by less than 10%, a warning will be issued. 2. On roads with a speed limit below 50 km/h, exceeding the limit by 10% to less than 20% results in a fine of 50 yuan; exceeding by 20% to less than 50% results in a fine of 100 yuan; exceeding by 50% to less than 70% results in a fine of 300 yuan; exceeding by 70% or more results in a fine of 500 yuan. 3. On roads with a speed limit between 50 km/h and 80 km/h, exceeding the limit by 10% to less than 20% results in a fine of 100 yuan; exceeding by 20% to less than 50% results in a fine of 150 yuan; exceeding by 50% to less than 70% results in a fine of 500 yuan; exceeding by 70% or more results in a fine of 1000 yuan. 4. On roads with a speed limit between 80 km/h and 100 km/h, exceeding the limit by 10% to less than 20% results in a fine of 150 yuan; exceeding by 20% to less than 50% results in a fine of 200 yuan; exceeding by 50% to less than 70% results in a fine of 1000 yuan; exceeding by 70% or more results in a fine of 1500 yuan. 5. On roads with a speed limit above 100 km/h, exceeding the limit by 10% to less than 50% results in a fine of 200 yuan; exceeding by 50% to less than 70% results in a fine of 1500 yuan; exceeding by 70% or more results in a fine of 2000 yuan.
To determine whether a vehicle is speeding, what I care most about is the accuracy and reliability of the speed measurement equipment. Fixed speed cameras on the roads use radar or laser technology to capture vehicle speeds in real time, with an error margin of no more than 3%. Mobile speed enforcement vehicles quietly park by the roadside and suddenly activate their devices to scan passing vehicles. Average speed check zones are even more effective, calculating the average speed by measuring the time a vehicle takes to travel between two points—there’s no fooling the system by slowing down midway. Handheld speed guns used by police are also highly accurate, so it’s important to cooperate during enforcement checks. While some navigation apps can display speed limits, they are no substitute for professional equipment. Speeding is both unsafe and likely to result in a ticket—keeping your speed in check is the best approach.
With over 20 years of driving experience, I determine speeding mainly through three indicators: the dashboard, road signs, and physical sensations. Before driving, I always check if the speedometer on the dashboard is functioning properly—regular calibration is crucial. While driving, I constantly pay attention to speed limit signs on the roadside, especially in unfamiliar areas. When the car starts to feel floaty or the engine roar becomes noticeably louder, it often indicates excessive speed. If the centrifugal force during a turn is so strong that you have to grip the steering wheel tightly, you're definitely speeding. Extra caution is needed in special weather conditions; for example, 60 km/h in the rain can be more dangerous than 80 km/h on a clear day. Remember, when the speedometer shows 120, the actual speed might only be 115, and GPS readings tend to be more accurate. The key is to develop the habit of regularly glancing at the dashboard—don’t wait until the speed camera flashes red to regret it.
From a technical perspective, speed detection fundamentally measures instantaneous velocity. Radar speed guns emit microwaves and calculate speed based on frequency changes in the reflected signal. Laser speed guns offer higher precision by determining vehicle speed through the time difference of laser round trips. Inductive loops embedded in road surfaces generate electromagnetic induction timing when vehicles pass over them. Currently, the mainstream average speed measurement systems utilize license plate recognition technology, recording timestamps at the entry and exit points of monitored road sections. Interestingly, vehicle speedometers typically have a 5%-10% margin of error - an off-road vehicle displaying 60 km/h might actually be traveling at 65 km/h. Weather conditions also play a significant role, as headwinds can cause actual speeds to be lower than indicated. It's advisable not to test the precision of these devices - maintaining safe speeds is always the best guarantee.
