I have checked and corrected you grammar errors. Here is the revised version.
Speed limits are enforced by the government to help reduce the number of car accidents by regulating how fast a driver should be going. Some people follow these rules for safety reasons, while others do not. I think speed limits are important to abide by both for pedestrians and driver's safety.
Speed limits may frustrate to follow. Pay attention to the speed limit signs, if you do not see the sign, it could cause getting a ticket for speeding. Also, if a street is clear, and a person is running late for an appointment or job, they cannot go as fast as they would like to. However, I believe the good outweighs the bad. Speed limits help keep drivers safe, and kids in school zones and pedestrians at grocery stores.
In conclusion, the safety of others is way more important than our convenience. We should pay attention while driving to ensure we are going the right speed limit to avoid any fines. And giving ourselves more time to get to places, we need to be. Speed limits save lives, and all we need to do is follow them!