You must know most people only have their phones when they are running errands, at work, etc.

Yes, the apps perform better/faster and generally have more UI thought put into them. Overall, lower friction. Often when people need to use their banking app, they're in a hurry, maybe stressed (e.g. in line at a grocery store) so everything the bank can do quickly and with visual assurance helps.

On the premium end of banking, where users generally aren't stressed about money, offering an app is more about catering to however the user prefers to interact.

That I couldn’t say. It at least provides a model. Most city or county governments have some influence over their traffic engineering or streets staff as far as high level planning concerns.

Chicago is one publicized example. https://slate.com/news-and-politics/2014/10/chicago-shortens...

Most US cities have lower posted speeds than average drivers’ perception of safe speeds.