Title
CONTRACT NO. K-1415-76: A SYSTEM SUPPLY AGREEMENT BY AND BETWEEN THE CITY OF NORMAN, OKLAHOMA, AND ECONOLITE CONTROL PRODUCTS, INC., IN THE AMOUNT OF $105,000 FOR THE IMPLEMENTATION OF AN ADAPTIVE CONTROL SIGNAL SYSTEM FOR STATE HIGHWAY 9 FROM 24TH AVENUE S.W. TO JENKINS AVENUE.
Body
BACKGROUND: The Traffic Control Division manages traffic signal timing in a variety of ways. The simplest is an isolated traffic signal, such as the one located at the intersection of 12th Avenue NE and Franklin Road. Traffic signals such as this one operate in response to the traffic demand independent of the operation of other nearby traffic signals. In situations where the City has a series of traffic signals along a busy arterial roadway, in close proximity to each other, it becomes necessary to coordinate the operation of the signals. This is done by physically interconnecting each signal with fiber optic cable to assure that the beginning and end of the green interval from one signal to the next is programmed in a way that facilitates the flow of traffic along the more heavily traveled roadway. An example of this is the ten (10) signalized intersections on Robinson Street, between 36th Avenue NW and Porter Avenue.
Over the years, City staff has work diligently to modernize the traffic control equipment used at intersections in a coordinated corridor. This effort has allowed the City to begin considering the use of higher-level systems such as "adaptive control". This modernization effort has included the use of fiber optic cable to interconnect intersections, video to detect vehicular traffic, rather than in-pavement loop detection, and the most modern traffic signal controllers.
Since November of 2009, City staff has used a computerized traffic signal management system called Centracs. Traffic signals with fiber optic interconnect are included in the network. Currently, 75 of our 143 traffic signals are on the Centracs Traffic Signal Management System....
Click here for full text