Assuming the roads are safe and clear, how fast can you legally go? Well, it depends on where you are. In a posted school zone, the speed limit is usually lower than the surrounding area. In business districts, the speed limit is 20mph. In residential areas, the speed limit is 25mph. Non-hard surface county roads have a speed limit of 50mph, and hard surface county roads have a speed limit of 55mph. Specific sections of highway have a speed limit of 65 or 75mph, but most other areas, including state highways not otherwise posted, have a speed limit of 60mph.

Other than that, you are likely to see speed limit signs indicating a wide range of limits based on a variety of conditions, such as constructions zones, school zones, or half-finished-then-abandoned bridge zones. Just remember to always drive no faster than the speed limit (and slower still if conditions are poor) so that you don’t go ramming into the rear end of a hatchback or flying off into a corn field.