This question came up with a co-worker while we were en-route to Olympia a few days ago regarding car-pool lane usage...Whaddya think? Suppose you're on your bike, in the carpool lane, doing the posted speed (usually 60) plus 3-4mph to be moving through the blind spots of traffic in the left-most (non carpool) lane. After a while, the left lane opens up for as far as you can see (until the next curve). A Cager behind you has sailed up doing 70-75. With all other lanes of traffic, the law states you should move right (this is assuming you're being a saint and not speeding). Does the same rule apply to the carpool lane, or should the cager exit the carpool lane and pass in the normal, left-most lane of traffic since it's open? What about in California where there are designated entrances and exits to the carpool lane? Should the cager or the biker get out?