It's one of those things everyone always says but doesn't seem to always be true. There used to be a spot on my commute that always had traffic jams. It was a

It's one of those things everyone always says but doesn't seem to always be true. There used to be a spot on my commute that always had traffic jams. It was a single lane turn coming off a bridge and having to merge with a busy road. Traffic always used to back up and block the entire bridge. A couple of years ago they changed the one lane into two lanes and put a light. No issues since. But adding a big highway before a congestion point, that doesn't help.