eli5: would adding more lanes to a freeway/busy street really ease congestion or would you still get bottlenecks?

Question

I mean theoretically adding a lane or two should allow more cars to flow through, or would bad drivers still cause bottlenecks/gridlock despite the added capacity?

In: 28

Answer 1

Bad drivers are far from your only problems. Accidents (whatever the reason) cause major headaches. Coming in and getting off the highway is a huge bottleneck. Etc.
We don’t need more lanes. We need fewer cars 😅