What causes you to go into a rage while driving?

[cemaphonic]

66. It can depend on road conditions though.

Here in WA, the official rule is even stricter - You are supposed to only use the left lane for passing, merging or the occasional left-lane exit. But the I-5 corridor between Everett and Olympia (about 100 miles of continuous urban-suburban development) is running at nearly-full capacity pretty much all the time (and is a parking lot during rush hour). At that level of congestion, the left lane becomes just another lane, and trying to reserve it as a "passing-only" lane would be absurdly impractical. I'm sure MD has similar traffic situations around the DC suburbs.

In those conditions, I frequently see situations where the left lane is full, and going about 10-15 mph over the speed limit. Some joker isn't satisfied with that, so they'll tailgate or weave around until they get ahead of one car, at which point they're still stuck behind the dozens of other cars in the lane, so they go through the same procedure over and over, with all the weaving and tailgating making everything slower and less safe for everyone around them.

On open highway, I agree that people shouldn't be in the left lane unless they're passing.