Failure to comply with the speed limit on a high-speed road is a very dangerous and illegal behavior, and driving safety cannot be ensured. Failure to comply with the speed limit will bring many serious risks： 1. **Increase the probability of accidents**: Speeding greatly increases the braking distance of the vehicle, and it is difficult to stop in a short period of time in the event of an emergency, which can easily cause accidents such as collisions. 2. **Shortened reaction time**: Excessive speed will compress the driver's observation and reaction time to road conditions, and it is too late to deal with the sudden appearance of pedestrians, vehicles, etc. 3. **The difficulty of vehicle control increases**: Under high-speed driving, the stability of the vehicle decreases, and the difficulty and risk of steering, braking and other operations are significantly increased. To ensure the safety of high-speed driving, you must strictly abide by the speed limit regulations and do the following： 1. **Maintain the appropriate speed**: Follow the road speed limit signs and do not speed too fast. 2. **Concentrate**: Always pay attention to road conditions, other vehicle dynamics, etc. 3. **Maintain a safe distance from the car**: Maintain a sufficient safe distance from the car in front so that there is sufficient reaction time. 4. **Reasonable use of lighting**: Correctly use turn signals, headlights, fog lights, etc. according to weather and road conditions. 5. **Check the vehicle regularly**: Ensure that the vehicle's braking, steering and other systems are normal. 6. **Plan your route in advance**: Be familiar with the road conditions and avoid distractions or violations due to unfamiliar routes. 7. **Avoid tired driving**: Ensure adequate rest and rest for a certain period of continuous driving. 8. **Abide by traffic rules**: Do not change lanes, overtake, etc. at will.