https://smartgrowthtulsa.org/what-is-the-purpose-of-a-city-street/?utm_content=bufferba757&utm_medium=social&utm_source=facebook.com&utm_campaign=buffer
http://www.aarp.org/livable-communities/getting-around/info-2015/older-adults-without-cars.html?utm_content=buffer766be&utm_medium=social&utm_source=facebook.com&utm_campaign=buffer