Like most other states, Washington has two types of speeding laws: "absolute speed limits" and a "basic speeding law." This article explains the differences between the two and the consequences of each type of violation.
Washington's basic speeding law prohibits driving at a "speed greater than is reasonable and prudent under the conditions and having regard to the actual and potential hazards then existing." In other words, motorists must always drive at a safe speed. What a safe speed is will depend on the circumstances. For instance, driving 55 miles per hour might be safe on a bright, sunny day. But if it's dark and the road is icy, going 55 miles per hour could be dangerous and a violation of the basic speeding law.
There is no trick to how Washington's absolute speed limits work: If the absolute speed limit is 40 miles per hour and you drive faster than 40 miles per hour, you've violated the law.
Washington's absolute speed limits prohibit driving faster than:
Generally, a speeding citation will cost you up to $250 in fines and an additional $17 in fees. However, the maximum fine is doubled for speeding violations in school and playground crosswalks.
Depending on the circumstances, speeding could lead to a "reckless driving" conviction. Washington defines reckless driving as operating a vehicle "in willful or wanton disregard for the safety of persons or property." And if a speeding violation leads to the death of another person, vehicular homicide charges are possible.