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Construction on StonbrookBen Brezina, Assista08-26-13  04:30 pm
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Aneetha Trikur
New member
Username: Frisco_mom

Post Number: 2
Registered: 07-2013
Posted on Monday, July 29, 2013 - 12:01 pm:   

On Lebanon at the legendary intersection, the sign for legendary drive is missing going west. There is a huge sign on the signal going east though. any reason why?
At the Dallas Tollway and Cotton Gin signal, one seems to need a green arrow for making a left turn. Given there is no oncoming traffic when taking a turn into the underpass, what is the reasoning behind not having a green light to make a turn when the signal to go straight is green?
You still have to wait for the signal going west or east in the underpass to go past the tollway road.

Joel Fitts, Senior Traffic Engineer
Username: Joel_fitts

Post Number: 146
Registered: 03-2008
Posted on Friday, August 23, 2013 - 10:55 am:   


At the intersection of Lebanon & Legendary, we are going to install an internally lit street name sign that will be visible to both directions of Lebanon (like you see at our other traffic signals). We are waiting for the sign to be fabricated and delivered to us.

At the intersection of Dallas Parkway & Cotton Gin, motorists making a left-turn off of Dallas Parkway need to wait for a green arrow because we need to store the left-turn traffic on the frontage road for a time. This is necessary because there is so much more through traffic on Dallas Parkway that we need to give it a lot more green time. If left-turns were able to turn while the through movement is green, the left-turners would be faced with a red light at the other frontage road and then that traffic could potentially back up until they were hanging out in the intersection. Because there is limited space between the frontage roads to store left-turn traffic, it must be stored on the frontage road in order to prevent the intersection from being gridlocked.

Traffic volumes on Cotton Gin will grow in the future and some traffic on Main Street may shift down to Stonebrook Parkway once it connects from Legacy to Dallas Parkway. Therefore traffic patterns will change at this intersection and so the operation of the traffic signal will likely change back to the more typical left-turn operation in the future.

Joel Fitts
Senior Traffic Engineer

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