It seems the RTC engineer and chairman are using "new math" to decide the roundabout is less expensive than a traffic light. The roundabout will cost $205,724 and a traffic light will cost $180,000. That means the very non confusing traffic light will cost $25,724 less.
Figuring the average maintenance costs of $4,000 per year, we could enjoy five years of the understandable intersection for the same price of a roundabout that is like a "game of chicken" every time two cars are in the intersection. It sounds as if we shouldn't confuse the RTC with the facts as their "minds" are already made up.