> Tesla will speed up or slow down and change lanes automatically. You are still required to engage the turn signal; Tesla will speed up / slow down to execute

> Tesla will speed up or slow down and change lanes automatically. You are still required to engage the turn signal; Tesla will speed up / slow down to execute the merge, eventually, and will steer the merge for you but does not make the decision to do so autonomously (though it'll recommend a new lane to you with a blue lane line on your dash).