Sometimes, those considerations include highway speed minimums. Because of how minimum speed limits interact with those factors, the limits do make a difference in the real world. With that in mind, let's consider a study looking into how highway maximum and minimum speed limits affect traffic safety. The result is that some people will stay in their speed comfort zones, and some will drive closer to the minimum speed. Considering that many studies indicate that increased speed variance can lead to more fatal accidents, minimum speed limits that are too low can make roads more dangerous.