To determine which messages to automatically display, adaptable variable message sign technology acquires traffic information from satellite data networks and what other source? cellular signals
911 calls
traffic cameras
public reporting

What is the purpose of the tenth amendment? a. to establish the electoral college b. to give each state constitution the same protection as the federal constitution c. to grant to the citizens of each state access to the federal court system powers d. to limit the power of the central government by establishing reserved powers for states and individuals