September 05, 2006
Priscilla S. Cornelio, P.E., Director

From time to time, the Department of Transportation is asked to conduct an intersection traffic study on roads in the unincorporated area, or on a boundary shared with a municipality, to determine if a traffic signal is needed and meets legal warrants. However, once the warrants for the traffic signal are satisfied, it may be quite some time until funding is found to install the traffic signals. In order to aid in allocating limited funding to install those traffic signals so as to protect the largest number of persons from injury and death and the most personal property from loss, the Department has developed a Traffic Signal Projects and HAWK Flashers Schedule.

The methodology has been used in a number of neighboring states for decades and has been well tested in the courts. The intersections are rated based on which specific warrants are met. Each location is weighed according to how well signalization will reduce accidents and the severity of those accidents. Congestion relief is also considered. The cost is then compared ot the projected benefits of signalization to arrive at the priority of each location. In short, this tool rationally identifies in which order intersections should be signalized. The list is revised and published each time an intersection becomes warranted for signalization, as well as when the signal installation at any listed intersection is completed.

In the event an intersection located within the limits of a scheduled Capitial Improvement Project is found to warrant signalization, the signal system will be installed as part of that project, irrespective of its place on this list.