If you cruise down the left lane of the highway below the speed limit, you might be an asshole.

If you change lanes without signalling or having adequate clearance, you might be an asshole.

If the only time you drive over the speed limit is when you see a yellow traffic light, you might be an asshole.

If you use an exit lane as a passing lane, you might be an asshole.

If you can't maintain speed of traffic *and* you can't come to a full stop at stop signs, you might be an asshole.

If you're not attentive or empathetic enough to figure these rules out, yet you continue to drive on public roads anyway, you're definitely an asshole.