For relatively new concepts, such as back-in parking and roundabouts, incorporate a strong educational component both in the early planning of the street as well as during project implementation. If needed, create an interim temporary situation on the site so that people can experience the new concept before it is finalized.
Involve the community early on in the overall planning and design of streets through various forums and media, such as community meetings, design charrettes, websites, blogs, etc.
