Traffic signals allow the orderly movement of vehicles and pedestrians through an otherwise challenging intersection. Usually, signals are at intersections of streets with high traffic volumes.
State Law requires that prior to installing a traffic signal an engineering study must be completed. This study should document that the installation of a signal is necessary to improve the overall operation of the intersection.
The study for installation of traffic signals is based upon the following criteria documented in the national Manual on Uniform Traffic Control Devices:
At many major intersections across Lincoln, arrow signals are used for both left and right turns. Studies show that arrow signals provide clearer instruction and result in fewer crashes.