National Association of City Transportation Officials (NACTO)Publications
Linked here is a collection of past publications by the National Association of City Transportation Officials (NACTO) focused on urban street planning and design, with some publications primarily focusing on urban planning for stormwater, bicyclists, and children, among others. All publications found this page are free to access, and PDFs are available for download.
According to its website, NACTO is an association of 96 major North American cities and transit agencies formed to exchange transportation ideas, insights, and practices and cooperatively approach national transportation issues.