[otnemem]

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He gains nothing in blocking the shoulder except the satisfaction of not letting these people get through.


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Except that usually in these situations the people speeding by on the shoulder then have to get back into the normal traffic lanes, increasing the wait time of everyone they have passed. By stopping cars from passing in the shoulder and cutting everyone off at a later point, the person in the SUV saves himself and everyone who would be cut off the additional delay.

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Most people who drive in the shoulder also know how to cut back in without slowing anyone down. Despite that, my gut says these people were trying to get to an exit.