Today the East Dallas Advocate wrote an article about TxDOT's view in regards to the 3G Intersection options.
According to the article a TxDOT official stated that, “Option 2 doesn’t push more traffic onto Gaston, because Gaston is not being widened,”
The same official followed up with this statement, “It only helps with reducing intersection delay. Since this project is not adding capacity, a significant change in the traffic pattern is not expected. The traffic analysis performed assumes that both options have the same traffic volumes.”
This statement contradicts their own document which can be found at keepitmovingdallas.com