Center lane closure
The Connecticut DOT offers the following response:
When approaching at high rates of speed, drivers may not be able to accurately choose their lane. With devices on the left, middle, and right it can be difficult to recognize what is taking place on the pavement as the devices themselves can obscure view of the pavement surface and the work zone tends to look chaotic, which could lead vehicles off-track even at low speeds.
Compounding the problem is that cones or tubular markers not affixed to the pavement may get displaced. Displacement is less of an issue when they are along the roadside and can be readily uprighted, but placing them between lanes is often not practical.
CDOT’s Traffic Division advises closing two lanes and maintaining a single lane when paving a center lane. All other times, maintaining traffic in two lanes should be done with a typical left- or right-lane closure pattern if possible.