Question: Which U.S. state has the highest speed limit?
Answer: Texas has the highest speed limit in the U.S., with certain rural toll roads allowing speeds of up to 85 mph. Several other states—including South Dakota, Utah, Montana, Wyoming, and Nevada—permit speeds of up to 80 mph on some rural interstate highways. By contrast, Hawaii has the lowest statewide speed limits, with rural interstates topping out at 60 mph and some local roads limited to 45 mph. The District of Columbia also has some of the nation’s lowest posted limits, with most roads capped at 25 mph.
