How I deal with FSD’s speed-limit misreads, and the I-35/I-29 speed trap

FSD still misreads speed limits, mostly in construction zones, and I’ve found a way to live with it. The trick, if you want to call it that, is the speed profile. If I’m in Standard and the car’s pushing harder than I like, I drop it down a couple of notches. If I’m in a hurry I’ll at least pull it back to Standard. It’s not ideal, and you shouldn’t have to babysit it like that, but it keeps the car from overdoing it. There’s one stretch I watch closer than the rest, which is I-35 and I-29 on the north side of the river. The limit drops to 55 up there, but traffic is usually running 60-plus, and FSD wants to keep up with the flow. That is a speed trap. What I’d really love is if it could learn to recognize those spots, the ones where the posted limit and the moving traffic don’t agree.