Don’t forget, insurance covers 50% before the deductible is met, not after. When a policy has that verbiage, usually there’s a footnote that states how those claims are handled in the future. From what I’ve seen, that could mean that insurance will cover 100% of said procedure after the deductible is met or it could mean a co-insurance of 30%.
After the deductible is met, OP won’t necessarily pay 50%. The percentage of the bill that OP and/or insurance will pay will be on a footnote at the bottom of the blue plan overview page (at least it’s blue when looking at plans from the ACA marketplace).
As long as they are done correctly. I’ve seen many new roundabouts that are two lanes wide and allow people in the middle lane to turn out of the roundabout. Only the outer lane should turn out, otherwise there’s essentially a stop sign because you never know what the other cars are going to do.