The combox mentions a serious safety problem with those damn lights, and I've noticed exactly the same thing. (I added the numbers to distinguish between the comments.)
1) I drive I-55 a lot, to the state line. Various departments, as well as the ISP, make stops along my route.
Some of their emergency lights are unnecessarily bright, some have far too MANY lights (sometimes of different colors and frequencies) and some are just plain blinding because of how they're aimed in the eyes of passing drivers.
2) i still drive interstate at night several times a month and sometimes you cant see the road obstructions due to all the conflicting ultra bright flashing lights and it doesnt help that traffic is moving way over the limit. add rain or snow and its some tense manuevering. some day the safety geniuses may realize this is overkill and go back to basic flashing lights instead of a fourth of july laser show
3) I travel Wisconsin interstates at night. The strobes on the trooper cars absolutely destroy your vision. The greater the distance the worse it gets. I've had to slow to 5 mph as I got close because I couldn't see beyond the backend of the police car.
4) Never crashed into a vehicle with emergency lights, but I've been thinking this for a while. Used to be gumballs. Then light bars. Now, let's be honest, it's pretty insanely bright and....distracting? It's kind of like everything else in society. If a little is good, then more is better, and over-the-top is best....
This has put first responders at great risk, as 2CityCop mentions. Think the Safety Nazis will do something about it?