What situation is addressed by Signal 100?

Signal 100 is utilized specifically to alert law enforcement agencies about a wrong way driver on the highway. This signal is crucial for ensuring the safety of both the drivers and the public, as it facilitates a rapid response to potentially dangerous situations on the road. By sending out this alert, patrol officers and other responders can work together to locate and intervene with the wrong way driver, preventing potential accidents and injuries.

The other options are not applicable because they pertain to different types of situations that do not warrant the same level of immediate and widespread alert. For example, a drug courier alert, while serious, does not have the same direct and immediate threat posed to public safety as a wrong way driver maneuvering against the flow of traffic. Technical problems with a computer might require attention but do not involve life-threatening scenarios, and the inability to read or a need to change location would also not invoke the same emergency response as a wrong way driver would.