How are highway speed limits set?
How are highway speed limits set? Because speed limits are enforceable laws, they are set by elected officials. 400 defines the speed limits for city streets at 25 mph, county roads at 50 mph and freeways at 60 mph. However, the next few sections of the RCW specify situations where state and local officials can adjust speed limits as appropriate. What are speed limits based on? All speed limits are based on ideal driving conditions. Remember, breaking the posted speed limit and driving faster than is safe for current conditions is dangerous and illegal. In most states (e.g.,California, Massachusetts, Michigan,...