The 50th Edition of the Standard Traffic Ordinance (STO) has been incorporated by Reference Under the Provisions of K.S.A. 12-3009 through 12-3012, and K.S.A. 12-3301 and 12-3302 by Ordinance No. 7668 in the City of Manhattan, Kansas, with certain omissions, changes, additions, prescribing additional regulations, and providing certain penalties. The STO has been published by the League of Municipalities since 1960. It is designed to provide a comprehensive traffic code for Kansas cities.