We checked the signal operation on site. All detection and timing were working correctly. We will continue to monitor the intersection for possible improvements.

What is the definition of. "working fine"? I have repeatedly sat for. 2 or more cycles where only 2-3 vehicles are able to turn before the turn signal cuts off.

Signal timing is always a balancing act. The intersection of roads that do not carry a great deal of traffic with roads that do (Old Buffaloe and Capital is a good example) are tough, because it is necessary to give the major through road a lot of green time in heavy traffic periods. That means a lot of red time and short green cycles on Old Buffaloe. The timing of the signals is set to make sure we don't create a traffic disaster on Capital, and sometimes causes delays on the side roads in these peak times. A four-way intersection also has lots of phases, further reducing the capacity of the intersection to handle side traffic in peak times. We are constantly reviewing the timing of signals along major thoroughfares and the advent of our new computerized signal system will assist us even more to make real-time adjustments, but in the case of roads like Old Buffaloe that have a nearby parallel more major thoroughfare / intersection at New Buffaloe/ New Hope Church, it will always be a challenge to give the cross traffic enough green time without seriously affecting traffic on Capital Boulevard.

Your detailed response is thorough, and appreciated, though it does not address the issue raised.
The concern raised is for "for traffic headed North on Capital and turning left onto Old Buffalo."
That is to expressly say, traffic on North Bound Capital (the prioritized major thoroughfare in your statement above) is gravely affected when the left hand turn signal, ONTO Old Buffaloe is not appropriately timed to allow a sufficient number of cars to turn OFF of North Bound Capital. If you were to observe traffic at peak times as stated above, you would note that the turn lane OFF of Capital backs up into the through lanes of this thoroughfare preventing the flow off traffic on Capital Blvd.
Hopefully this clarification properly directs the investigative efforts initially requested.

I will definitely pass this on. I have a lot of respect for our traffic management group. They have a tough job, particularly on big thoroughfares like Capital. Your comment makes sense and I am sure they will work to try to fix the problem.

If I may add to the comments from PineKnollTownes, there have been times when at either the Old Buffalo left turn or especially at the Greywood Dr left turn when I can clearly see the traffic halted at New Hope Church Rd, yet you cannot turn. This is especially frustrating during off-peak times when you feel as though you've sat their a good 3-5 minutes waiting and there's no traffic.

I too have observed, as stated above, that the left turn traffic does indeed back into the other lanes of traffic. This backup pattern also occurs at the Huntleigh Dr. left turn signal during peak times.

If nothing can be done to alleviate those back ups, could there be an exit off I-440 for Atlantic Ave? For many of us who live in the areas between Capital and Atlantic, the most sensible route from I-440 is to take Capital, but some of that traffic could be diverted with an exit onto Atlantic Ave., if that's even possible. In thinking about it, it could even provide an alternate route for those who work off Highwoods, which is another left turn that become congested at times.

I think if we, the people that live off Capital Blvd, were asked, we would ask that all of Capital Blvd be addressed as part of the Capital Boulevard Corridor Study. To simply state it, the problems on Capital Blvd don't end at the I-440 interchange.

Thanks for listening and taking the time to address our concerns.