Megaphone
The megaphone broadcasts your instructions to the area illuminated by your spotlight. Use it to clear traffic jams, pull over speeders and diffuse riots. Click on the button to open a menu of message types, and click on the type you want in order to send a message or press a key for the same results. The following is a guideline for message types and the situations they work with:
Report Traffic
Traffic Jam
F6
Stop Criminal
Criminal & Speeder
F7
Evacuate
Evacuate an area
F8
Disperse
Riot
F9
Greet
Try it and see
F10
Results can vary. Sims generally do as requested, but some may try to "beat the odds." Good luck.