What are the flashing white lights on top of traffic lights when fire equipment passes?

The fire equipment and ambulances have a traffic control device on each vehicle that can change the traffic signals to green thus providing a safer and expedient response. The flashing white light indicates to responding vehicle that the light will turn green for them.

The other lights on top of the other poles give a steady white light to let other equipment that may be responding from another direction know that the signal is controlled by another vehicle.

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1. Does the Fire Department have Paramedic service?
2. Where are the Fire stations?
3. I see the Carpentersville Fire apparatus in other towns, why is that?
4. Why do the fire trucks sometimes turn lights off and turn around?
5. What are the flashing white lights on top of traffic lights when fire equipment passes?
6. How long should I keep smoke detectors?
7. Where should I place smoke detectors?
8. Should I have an escape ladder for my upper floors?
9. Does the Fire Department offer CPR classes?
10. Does the Village allow open burning?
11. Why do so many fire apparatus respond to simple incidents?
12. Why do I see fire trucks with full lights and sirens go through a red light at intersections and then, after they go through, they turn off their lights and slow down?
13. Why does a fire engine respond when I call for an ambulance?
14. Why do I see firefighters cutting holes in the roof of a building on fire?