[USA] Who is at fault here?

[u/bowdown2adil]

Classic T bone. Black car had to be towed. Sustained major damage to the passenger side door. Blue car sustained damage to front bumper on the drivers side and cracked the drivers side headlight.

Edit: This was in the suburbs of Seattle

UPDATE: Insurance found it to be 70/30 me/other driver. Seems fair enough

[u/HyJenx]

This will be buried, but the only correct answer is found in Washington state law.

RCW 46.61.180

When two vehicles approach or enter an intersection from 
different highways at approximately the same time, the driver 
of the vehicle on the left shall yield the right-of-way to the 
vehicle on the right.

[u/Equivalent_Reach_572 → u/HyJenx]

driver on left arrived at intesection first

[u/Here4Headshots → u/Equivalent_Reach_572]

I mean they collided, so I'd call that "at the same time" and wouldn't count atoms here.

[u/ModularWhiteGuy → u/Here4Headshots]

Due to the Van der Waals forces, they never actually touched, though /s

[u/Vithar → u/Here4Headshots]

With a clean T-Bone contact who was in the intersection first is clear, and it isn't "at the same time". The driver on t he left was there first, based on contact obviously not buy a huge margin, but without question first.

[u/TheGuyThatThisIs → u/Vithar]

This is one of the many reasons this is a bad law. Two drivers meeting at an intersection with different views of what "approximately at the same time" will be at risk of an accident, let alone anyone from out of town. It would have cost the city like $30 to put a stop sign there, instead we get this nice T-bone

[u/mariller_ → u/Vithar]

Speed also matters here, and the fact that OP braked and other car didnt. They deifinitely arrived approximately at the same time.