Numerous construction signs of "Workers" where the speed limit goes from 70 mph to 65 mph or 55 mph or 45 mph; it yo-yos frequently and quickly. There are warning signs of speed reduction but with so many trucks in the right lane and few signs spread far apart, it’s easy to miss one before suddenly being in a reduced speed area. I-24 through Chattanooga downtown is also 45 mph which is very low for an interstate and people don’t realize the low speed limit on that particular interstate.