By ROBERT BOURQUE 
Los Alamos

Interesting comments about the North Mesa roundabout. People are not perfect; they usually don’t pay full attention to the task; and they are quite error prone. A major purpose of safety engineering is recognizing that and, by design, reducing the consequences of messing up. The recent addition of rumble strips along the centerline of the Main Hill Road is a fine example of that.

Having clear views of traffic at all times at roundabouts is another way. The other roundabout near DP Road does a fine job where all traffic is visible; they don’t suddenly appear from behind obstructions when another driver may be looking the other way. There is no reason the one at North Mesa can’t do the same.

Yes, speeding through the roundabout is also a serious problem, which can easily be solved with speed humps. Again, apply safety engineering.