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To report a concern regarding traffic signal timing, please contact the Engineering Services Department at 972-292-5400 and ask to speak to the engineer in charge of signal timing.
Special Cases:SH 121 - The traffic signals along the SH 121 frontage roads are controlled by the City of Plano. Please contact the City of Plano at 972-941-7000 to report problems or concerns.
Custer Road - The City of Frisco controls the traffic signals along Custer Road from McKinney towne Crossing / Custer Bridges to Eldorado Parkway.
The City of McKinney controls the traffic signals along Custer Road that are north of Eldorado Parkway. Please contact the City of McKinney at 972-547-7559 to report problems or concerns.
In addition, traffic signals along a major roadway are coordinated with each other in order to minimize the delay for the largest possible number of cars as they move through the city. When traffic signals are coordinated, each traffic signal must display the green indication to the primary direction of travel during a specific time period (in sequence along the road) so that the largest possible group of cars can proceed through the system with a minimum number of stops. The side street must remain red while the coordinated flow of traffic passes through the intersection along the major roadway (sometimes in both directions).
The wait on a minor street will always be less than 3 minutes during normal traffic signal operation.
This type of operation is only beneficial if the side street has very little traffic; therefore, it does not work well at the intersection of 2 major roadways.
Most of the traffic signals in the City of Frisco are located at the intersection of 2 major roadways, so this type of flashing operation would not be beneficial. However, the City of Frisco does change the operation of our traffic signals late at night to minimize delay. Almost all of our traffic signals operate in “free” mode during these hours, which means that they operate independently and serve the traffic on each street as it is detected. In this mode, a traffic signal will remain green for the major roadway most of the time and will service the cross street for a small amount of time only if a vehicle is detected. In this way, the signal minimizes the number of times that it stops traffic on the major roadway, and it minimizes the wait time for the cross street by switching over to it almost as soon as it detects traffic on that street.
The all-red time is also calculated using a nationwide standardized equation for a given speed. The City of Frisco uses all-red values that range between 1 and 3 seconds, depending on the intersection width and speed.
If you are already in the crosswalk, there will be enough time for you to finish crossing the street. In fact, the flashing orange hand is usually accompanied by a number that counts down to show you how much time you have left to cross the street before the traffic signal changes.
In addition, traffic signals must be spaced a certain distance apart in order to function well. The intersection of 2 major roadways is always assumed to be a future traffic signal location and then other potential locations must be spaced an appropriate distance away. As other traffic signals are added at minor intersections, it further limits the possible location of additional traffic signals.
Finally, the time frame for the installation of a traffic signal is primarily determined by the funding available to us each year. All of the intersections that meet the necessary criteria are prioritized each year based upon the amount of traffic they serve, an analysis of the conflicting movements, and other factors. The city then assigns the available funding to the top ranked locations.
It is not possible to install a traffic signal at every intersection for a number of reasons, so a particular intersection may not be eligible for a traffic signal. If it is eligible, it may take years before it reaches the top of the priority list for installation. At any intersection, we recommend that citizens take an alternative route instead of making a maneuver that makes them uncomfortable. Whether an uncontrolled intersection is a candidate for a traffic signal or not, it may be necessary for motorists to take an alternative route during busy times of the day instead of making a left-turn or going straight across an intersection. For example, motorists can turn right and then make a u-turn at another location.