How does the carpool lane relieve traffic congestion? If people could actually use that lane instead of it being some kind of elitist lane (which is what it fe

How does the carpool lane relieve traffic congestion? If people could actually use that lane instead of it being some kind of elitist lane (which is what it feels like, I drive it in all the time (family)), traffic would be better. The times traffic IS bad the damn carpool lane is just as backed up as the other lanes. And then there's the whole problem of needing to get off the lane, which you can't always do (you can only get off at specific spots), and then you're swerving across 4+ lanes of traffic causing a classic 'shockwave' problem.