@Thenomain I...what? Oh. I think I see where you're misunderstanding. Maybe? Freeways here are generally 65-75. Actual speed limit, excepting the parts between major cities that hit up to 85. You enter them off the feeder, which are usually 40-50. The norm is to accelerate on the ramp and then stay in your lane until you're up to speed and merge before your lane ends or becomes an exit only, but some people...panic or something? I'm not sure, but they'll try to merge into moving traffic going 10-30+ miles below the posted speed. It's actually illegal, you yield to the major road, they have the right of way.
My point about going at least 10+ miles over is in the fast lane, or what we call here, the passing lane. It's for passing, aka going faster than other people. You can get a ticket for not passing people in the passing lane. Like I don't care if I'm doing 90, if a super car or a bike comes up behind me, I move over to let them by.