But if you're trying to merge on, whether or not you have to stop before merging is not totally in your control. Specifically, if the right lane is packed, you

But if you're trying to merge on, whether or not you have to stop before merging is not totally in your control. Specifically, if the right lane is packed, you may have to stop if there is no opening as you pull up. Then it will be harder to merge in, not only because you are starting from zero velocity but also because the lane is packed. That is why I think people should not get in the right lane on a highway unless they are about to get off.