Flickering headlights to warn other drivers about police ahead?

I've pulled and quoted material from wikipedia here. The information includes various restrictions or legalities according to specific states as well:

http://en.wikipedia.org/wiki/Headlight_f%E2%80%A6 (for some reason 'flashing' is not complete with the link here leaving only f... copy and past and make sure 'flashing' is complete)

"Headlight flashing refers to the act of either briefly switching on the headlights of a car, or of momentarily switching between a headlight's high beams and low beams, in an effort to communicate with another driver or drivers. This signal can be intended to convey a variety of messages, including a warning to other drivers of road hazards or of speed traps, and it can also be a form of aggressive driving. The legality of headlight flashing varies by jurisdiction."

and

"In the United States, the legality of headlight flashing varies from state to state. Historically, law enforcement officers give citations for headlight flashing under three types of laws: (1) laws prohibiting a person from obstructing a police investigation, (2) laws prohibiting a person from having flashing lights on their vehicle, and (3) laws prohibiting shining a vehicle’s high beams at oncoming traffic. The specific language of each law varies by state along with courts’ holdings on whether their respective laws prohibit headlight flashing. Additionally, although not legally binding, the state driver’s manual of some states suggests flashing high beams under specific scenarios (e.g. if an oncoming vehicle is using its high beams, driver’s manuals suggest a motorist flash his or her high beams).[19][20]....."

I'll give you a little hint:

Don't ask if it's illegal to flash your headlights to warn about a police speed trap ahead.

It's much more appropriate to ask if it's illegal to flash your headlights to warn other drivers of the deer in the road up ahead.

Intent is everything 80% of the time. Doesn't matter if nobody else sees the deer that you did.

If it really is no longer any further on paper it really is truly a caution to now no longer do it shrink decrease decrease back, as right now as you're stuck shrink decrease decrease back and it is going into the place of work on list, you're growing to be a topic. different than the policeman is widely used which comprise your relations, you likely will be ok this time, yet on an same time as yours is a small city like this one I stay in, extremely truthfully everybody appears to be like ordinary with extremely truthfully everybody and that is in straightforward words now no longer lengthy until eventually eventually mom and pa receives an complete list!

In my state driving with your high beam headlamps on while you are following another vehicle 400 or closer or if there is oncoming traffic is a minor traffic violation. However, it does count as a moving violation and adds demerit points to your drivers license.

Hope this helps

It's illegal as it's considered to be perverting the course of Justice this goes for all US states!

and the "I am warning other drivers of a hazard IE Deer" is NO DEFENCE AT ALL!

If I think they're speeding, I will flash my lights anyway just so that they'll think there is police ahead and slow down.

No, this is legal. I do it to warn other and it is fine to do. So help everyone and do it to!! Haha