One of the stereotypes of engineers is that they are a conservative group of people. It's assumed that they go out of their way to make public infrastructure safe. Not just safe, but safe as safe can be!
When it comes to public streets, dangerous design is the norm.
The Federal Highway Administration (FHWA) has encouraged engineers to change their philosophy and behavior for many years. This presentation describes four specific ways engineers need to change in order to remain relevant. And more importantly...to save human lives.