Chapter 10.12 TRAFFIC CONTROL DEVICES 10.12.010 Authority to install traffic control devices. 10.12.020 When traffic control devices required for enforcement purposes. 10.12.030 Obedience to traffic control devices. 10.12.040 Installation of traffic signals. 10.12.050 Lane markings. 10.12.060 Authority to remove, relocate or discontinue traffic control devices. 10.12.070 Traffic control devices—Hours of operation. 10.12.080 Unauthorized painting of curbs. 10.12.090 Traffic engineer to erect stop signs. 10.12.100 Stop at through street or stop sign.