They should proceed with the roundabout.
It is well-established that roundabouts are safer than traditional intersections, as long as they are properly designed. They also reduce congestion, move traffic, allow pedestrian crossings, and provide a center island for public art.
A badly designed roundabout is a problem. Olympia's two mini-roundabouts on Henderson Blvd are poorly designed and result in frequent minor accidents. Even with the poor design, however, they avoid serious accidents, simply because people are going slowly.
It's appropriate for IT to consider alternatives. But a petition of 99 people versus the 10,000 people per day who will benefit from the elimination of traffic signals who pass through that crossing every day is not a reason to stop development of the roundabout.
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