Question....

If they are passing another truck that flashed their headlights as an ok for them to pull in, it's a thank you. Some will do it for cars as well.

 

Thanks the driver behind him for letting him over.

 

Np. Just like if ur in left lane trying to pass me i flash my headlights to let u know all clear to get over. Then u would do the tailights thing thanking me.

 

First reply is probably correct in most cases. I don't do 4-ways, I do an alternating of direction turn signals, but the intent is the same ... to let the other know you "appreciate the help". Also, some will do this in dusk/dawn hours or during rain events to tell the passed driver to "TURN ON THEIR HEADLIGHTS!"

 

Most drivers I see have the tail lights they can turn off, then on.

Same concept.

 

My 2014 international has button on steering wheel. Marker indicator. Does all the lights except headlamps

 

Regarding flashing your headlights to let a driver over. Some drivers will say they do not need your help passing you.

But in traffic with 4 wheelers, when a passing truck is being followed by a line of impatient 4 wheelers, a flash is used to let the passing driver know they can change lanes in front of you, perhaps leaving less than the safe several truck lengths, to keep the 4 wheelers from zipping into the right lane and trapping the passing truck out in the left lane for miles and miles...

Mikeeee

 

I always hit the marker light interrupt button after passing. Even if the driver I'm passing didn't flash/turn off his lights to say I'm clear to come back over. I do it mainly to say thank you and stay safe. It's the little things out here.

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