Question

speed limit laws were not written into the constitution, so what level of government has power over speed limits? federal state local

Explanation:

Under the U.S. system of federalism, powers not delegated to the federal government by the Constitution, nor prohibited to the states, are reserved to the states (per the 10th Amendment). Since speed limits are not addressed in the Constitution, this authority falls to state governments (local governments may set limits on local roads under state approval, but the core power rests with states).

Answer:

state