I see a whole new generation of 4x4 off road lights attached to the front grill of your SUV. see attached pic.
It's an array of LEDs that acts like an extremely bright floodlight.
I encountered one last night and another this morning.

I used to run a jeep with off road lights something like KC hilites that would project something like an extended range High beam.
They were only used off road.
To me, this was useful as it allows you to see what's coming up in the distance, while my normal headlights illuminates what's directly in front of the car.

These new LED floodlights do a great job of blinding oncoming drivers and the car directly in front.
The range is too short and pattern too broad to be useful for actual driving.

not legal to drive with those on, but i bet a lot of cops let it go for various reasons. yellowing headlights, dark roads, 'vision problems' etc.   

my neighbor has a lightbar(he goes camping and off roading a lot, but doesnt use them in the city) and im sure every brand has different reflector setups, but none of them seem to have deep enough reflectors to focus the beam tight enough so the glare wont blind everyone.
the day my neighbor installed it he called me to show it off since he knows im into led's and brought it over at night. his lightbar could illuminate the entire height of a telephone pole from only 250 feet away. i couldnt belive it. 10k lumens of pure flood for $100 is probably why so many people have them. to hell with other drivers vision

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 he called me to show it off since he knows im into led's and brought it over at night. his lightbar could illuminate the entire height of a telephone pole from only 250 feet away. i couldnt belive it. 10k lumens of pure flood for $100 is probably why so many people have them. to hell with other drivers vision

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you know that these a-holes are driving with them on just to attract attention.

I think a green laser would teach those guys a lesson about annoying other drivers.

I see no need for light bars on the streets of Oahu.  Most of the highways are so well lit that I see people driving on the freeway at night forgetting to turn on their headlights.  II have a 42 inch light bar on my truck on the Big Island and two 12 inch ones in the back.  The roads here are pitch black at night.  I do not use my light bar on the street or highway unless I can see for at least a mile ahead that there are no car lights in front of me.  My light bar will turn night into day  for at least a 100 yards or more.  I agree that many of the ones using it unnecessarily or inconsiderately are saying, "hey, look at me."  Pure a-holes.

I don't think its enforced. I drive a small car and I get blinded often by trucks with really bright bars as you described. Not cool. Too much ego attached to vehicles. Look at me bright lights!

In my previous life, I was a state certified vehicle safety inspector.  These lights are illegal, and shall not to be used on state and city roads.

But....

This state is more concerned about tracking and monitoring law abiding gun owners than enforcing laws that really effect safety and the welfare of the citizenry...  so you know how that goes....

Some states require off road lights to have covers over them when the vehicle is on a public road.  The driver can get a traffic ticket even if the light is off but uncovered.